title: Navicula
text: # Navicula
  
  Navicula est un genre d’algues (diatomées) de la famille des Naviculaceae.
  
  ## Synonyme
  
  Navicula a pour synonyme :
  
  * Scolioneis D.G. Mann in F.E. Round, R.M. Crawford & D.G. Mann, 1990
  
  ## Liste des espèces, formes et variétés
  
  * Navicula ingenua.
  * Navicula lanceolata.
  * Navicula oblonga.
  * Navicula stesvicensis.
  * Navicula tripunctata.
  
  Selon ITIS (5 mars 2021) :
  
  * forme Navicula approximata f. elongata Hustedt
  * forme Navicula gastrum f. maxima Tempère & M. Peragallo
  * forme Navicula gracilis f. minor Guermeur
  * forme Navicula paludosa f. rhomboidea Reimer
  * forme Navicula ventraloconfusa f. simplex Lange-Bertalot
  * variété Navicula amphibola var. perrieri M. Peragallo & Héribaud in Héribaud
  * variété Navicula amphibola var. polymorpha Fusey
  * variété Navicula anglica var. lapponica Cleve-Euler
  * variété Navicula anglica var. minuta Cleve
  * variété Navicula anglica var. subsalsa (Grunow) Cleve
  * variété Navicula clementis var. quadristigmata Manguin ex Kociolek & Reviers
  * variété Navicula creuzburgensis var. multistriata Patrick
  * variété Navicula exigua var. capitata Patrick
  * variété Navicula glacialis var. hudsonii Poulin & Cardinal
  * variété Navicula incompta var. incurva Reimer
  * variété Navicula lagerheimii var. intermedia Hustedt
  * variété Navicula lyra var. dilatata Schmidt
  * variété Navicula major var. dilatata M. Peragallo
  * variété Navicula major var. maxima Tempère & M. Peragallo
  * variété Navicula mediocris var. intermedia Reimer
  * variété Navicula mesogongyla var. interrupta Cleve
  * variété Navicula nyassensis var. capitata O. Miller
  * variété Navicula oblongum var. subcapitata Pantocsek
  * variété Navicula paramutica var. binodis Bock
  * variété Navicula perpusilla var. distans Cleve-Euler
  * variété Navicula placentula var. maculata Hustedt
  * variété Navicula ruttneri var. capitata Hustedt
  * variété Navicula scutelloides var. minutissima Cleve
  * variété Navicula scutelloides var. mocarensis Grunow
  * variété Navicula seminulum var. hustedtii Patrick
  * variété Navicula subhamulata var. undulata Hustedt
  * variété Navicula terrestris var. relicta (McCall) Lund
  * variété Navicula tuscula var. obtusa Hustedt
  * Navicula abbottii Cholnoky & Claus
  * Navicula abducta Manguin
  * Navicula aboensis (Cleve) Hustedt
  * Navicula abruptoides Hustedt
  * Navicula abscondita Hustedt
  * Navicula abstrusa Hustedt
  * Navicula abuensis Foged
  * Navicula abunda Hustedt
  * Navicula abundoides Cholnoky
  * Navicula accedens Hustedt
  * Navicula accurata Hustedt
  * Navicula achthera Hohn & Hellerman
  * Navicula acidobionta Lange-Bertalot
  * Navicula acidobiontica T. Watanabe
  * Navicula acidophila Cholnoky
  * Navicula acrosphaeria (Brébisson) Kützing
  * Navicula acuticuneata Metzeltin, Lange-Bertalot & García-Rodríguez
  * Navicula acuticuneatula Metzeltin, Lange-Bertalot & García-Rodríguez
  * Navicula acutirostris Hustedt
  * Navicula acutissima Hustedt
  * Navicula adamata Hustedt
  * Navicula adamsii Cholnoky
  * Navicula addaae Pantocsek
  * Navicula addicta Hustedt
  * Navicula admenda Hohn & Hellerman
  * Navicula adnatoides Cholnoky
  * Navicula adumbrata Cholnoky
  * Navicula adversa Krasske
  * Navicula adversatrix Pantocsek
  * Navicula aedfex Pantocsek
  * Navicula aegyptica Salah
  * Navicula aemilia Forti
  * Navicula aequalis Ehrenberg
  * Navicula aequatorialis Heiden & Kolbe
  * Navicula agatkae Witkowski, Lange-Bertalot & Metzeltin
  * Navicula aggerica Reichardt
  * Navicula aggesta Hustedt
  * Navicula agma Hohn & Hellerman
  * Navicula agnewii Cholnoky
  * Navicula agnita Hustedt
  * Navicula agrestis Hustedt
  * Navicula agulhasica Cholnoky
  * Navicula aikenensis Patrick
  * Navicula aitchelbee Bahls
  * Navicula ajajensis Skabitschevsky
  * Navicula aktinoides Skuja
  * Navicula alaskana Patrick & Freese
  * Navicula albanica Krenner
  * Navicula alea Hohn & Hellerman
  * Navicula aleksandrae Lange-Bertalot, Bogaczewicz-Adamczak & Witkowski
  * Navicula algida Grunow
  * Navicula algor Hohn & Hellerman
  * Navicula alineae Lange-Bertalot
  * Navicula alisoviana (Skvortzov) A. Tuji
  * Navicula allorgei Manguin
  * Navicula alpha Cleve
  * Navicula alternans Schumann
  * Navicula altiplanensis U. Rumrich & Lange-Bertalot
  * Navicula amabilis Hustedt
  * Navicula amicorum Grunow
  * Navicula ammophila Grunow
  * Navicula amnicola Hohn & Hellerman
  * Navicula amoenaeformis Manguin
  * Navicula amphiceropsis Lange-Bertalot & U. Rumrich
  * Navicula amphilepta Ehrenberg
  * Navicula amphisphenia Ehrenberg
  * Navicula anatis Hohn & Hellerman
  * Navicula angolensis Cholnoky
  * Navicula angusta Grunow
  * Navicula anna Hendey
  * Navicula annexa Hustedt
  * Navicula antiqua Grunow in Cleve & Möller
  * Navicula antonii Lange-Bertalot
  * Navicula antonioides Van de Vijver, Jarlman & Lange-Bertalot
  * Navicula antverpiensis Van de Vijver & Lange-Bertalot
  * Navicula apiculata Brébisson
  * Navicula apta Hustedt
  * Navicula aquaedurae Lange-Bertalot
  * Navicula arctissima Schmidt
  * Navicula arctotenelloides Lange-Bertalot & Metzeltin in Lang-Bertalot, Kulbs, Lauser, Norpel-Schempp & Willmann
  * Navicula arenaria Donkin
  * Navicula arenicola Grunow
  * Navicula arenula Hohn & Hellerman
  * Navicula argutiola Hohn & Hellerman
  * Navicula arkona Lange-Bertalot & Witkowski
  * Navicula armata Carter
  * Navicula arvensiformis Carter
  * Navicula arvensis Hustedt
  * Navicula arverna M. Peragallo & Héribaud
  * Navicula asiatica F. Meister
  * Navicula aspersa Hustedt
  * Navicula associata Lange-Bertalot
  * Navicula assula Cholnoky
  * Navicula astrolabensis Hendey
  * Navicula astutus Fontell in manus., Cleve-Euler
  * Navicula asymbasia Hohn & Hellerman
  * Navicula atacamana Patrick
  * Navicula athenae Witkowski, Lange-Bertalot & Metzeltin
  * Navicula atomarius Skvortzov
  * Navicula atwateri Seddon, Witkowski & Hemphill-Haley
  * Navicula auklandica Grunow
  * Navicula aurora Sovereign
  * Navicula australica (Schmidt) Cleve
  * Navicula australoceanica Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
  * Navicula australomediocris Lange-Bertalot & R. Schmidt
  * Navicula austrocollegarum Lange-Bertalot & Voigt
  * Navicula avenacea (Rabenh.) Brébisson ex Grunow in Schneider
  * Navicula avenaceoides Gandhi
  * Navicula avonensis Round
  * Navicula baardsethii Cleve-Euler
  * Navicula baccata Brun
  * Navicula bacilloides Hustedt
  * Navicula bacterium Frenguelli
  * Navicula bacula Hohn & Hellerman
  * Navicula baicalcollegarum Kulikovskiy & Lange-Bertalot
  * Navicula baicalensis Skvortzov & Meyer
  * Navicula baicalirmengardis Kulikovskiy, Lange-Bertalot & Metzeltin
  * Navicula baicalofrigidicola Metzeltin, Kulikovskiy & Lange-Bertalot
  * Navicula baicaloppugnata Kulikovskiy, Lange-Bertalot & Metzeltin
  * Navicula baicaloradiosa Kulikovskiy, Lange-Bertalot & Metzeltin
  * Navicula bainii Cholnoky
  * Navicula barbarica Hustedt
  * Navicula barberi Hendey
  * Navicula barberiana Foged
  * Navicula barentsii Foged
  * Navicula barrowiana Patrick & Freese
  * Navicula bastianii M. Peragallo in Tempère & M. Peragallo
  * Navicula bastowii Hustedt
  * Navicula bdesma Hohn
  * Navicula beaufortiana Hustedt
  * Navicula bella Hustedt
  * Navicula bellatii Frenguelli
  * Navicula belliatula Archibald
  * Navicula bellissima Hustedt
  * Navicula bergenensis Hohn
  * Navicula bergeri Krasske
  * Navicula besarensis Giffen
  * Navicula beta Cleve
  * Navicula biaculeata Cleve-Euler
  * Navicula biakensis Cholnoky
  * Navicula bialbata H. Peragallo & M. Peragallo
  * Navicula bicapitellata Hustedt
  * Navicula bicephala Hustedt
  * Navicula biconfusa VanLandingham
  * Navicula bicuneolus Metzeltin & Lange-Bertalot
  * Navicula bievexa Hohn
  * Navicula bifurcatula Hustedt
  * Navicula bioculata Grunow
  * Navicula bipustulata A. Mann
  * Navicula birhis Hohn
  * Navicula biskanterae Hustedt
  * Navicula bita Hohn
  * Navicula bituminosa Pantocsek
  * Navicula bjoernoeyaensis Metzeltin, Witkowski & Lange-Bertalot in Metzeltin & Witkowski
  * Navicula blasii Frenguelli
  * Navicula boergesenii Østrup
  * Navicula bogotensis Grunow in Schmidt
  * Navicula bongrainii M. Peragallo
  * Navicula borneoensis Hustedt
  * Navicula borowkae Witkowski, Lange-Bertalot & Metzeltin
  * Navicula boseana Skvortzov
  * Navicula bossvikensis Busse & Snoeus
  * Navicula bottnica Grunow in Cleve & Möller
  * Navicula bourrellyi Manguin
  * Navicula bourrellyivera Lange-Bertalot, Witkowski & Stachura
  * Navicula boyei Østrup
  * Navicula bozenae Lange-Bertalot, Witkowski & Zgrundo
  * Navicula brasiliensis Grunow
  * Navicula brehmii Hustedt
  * Navicula brehmioides Hustedt
  * Navicula breitenbuchii Lange-Bertalot
  * Navicula breviata Hustedt
  * Navicula brevirostrata Hustedt in Schmidt & al.
  * Navicula broetzii Lange-Bertalot & Reichardt in Lange-Bertalot & Metzeltin
  * Navicula brokenshirei Bastow
  * Navicula bruchii Grunow in Cleve
  * Navicula brunellii Poulin, Hudon & Cardinal
  * Navicula brunii Pantocsek
  * Navicula buccella Hohn & Hellerman
  * Navicula buchansiana Woodhead & Tweed
  * Navicula budda Skvortzov
  * Navicula burcki Reinhold
  * Navicula butreensis Foged
  * Navicula caduca Hustedt
  * Navicula caeca A. Mann
  * Navicula caenosus Carter & Bailey-Watts
  * Navicula calcuttensis Skvortzov
  * Navicula caldwellii Bastow
  * Navicula calva Østrup
  * Navicula camerata Cholnoky
  * Navicula campanilae Cholnoky
  * Navicula canaliculata Cleve
  * Navicula canalis Patrick
  * Navicula canariana Lange-Bertalot
  * Navicula cancellata Donkin
  * Navicula cantonatii Lange-Bertalot
  * Navicula capitatoradiata Germain
  * Navicula capitellata Skvortzov
  * Navicula capitulata Frenguelli
  * Navicula capsa Hohn
  * Navicula capsula Cleve-Euler
  * Navicula caractacus Hohn & Hellerman
  * Navicula carecti Cholnoky
  * Navicula cari Ehrenberg
  * Navicula carinata Ehrenberg
  * Navicula carinifera Grunow in Schmidt & al.
  * Navicula cariocincta Lange-Bertalot in Tsarenko & al.
  * Navicula carminata Hustedt
  * Navicula carolinensis Ehrenberg
  * Navicula caroliniae Bahls
  * Navicula carteri VanLandingham
  * Navicula carvajaliana Patrick
  * Navicula cascadensis Sovereign
  * Navicula casei Cholnoky
  * Navicula cassieana Foged
  * Navicula catalanogermanica Lange-Bertalot & G. Hofmann in Lange-Bertalot
  * Navicula cataracta-rheni Lange-Bertalot
  * Navicula cataractarum Hustedt
  * Navicula catarinensis Krasske
  * Navicula caterva Hohn & Hellerman
  * Navicula caucasica R. Ross
  * Navicula caudata Kulikovskiy, Metzeltin & Lange-Bertalot
  * Navicula cavernae Cholnoky
  * Navicula ceciliae Van de Vijver, Jarlman & Lange-Bertalot
  * Navicula celinei Witkowski, Metzeltin & Lange-Bertalot
  * Navicula cellesensis Héribaud & M. Peragallo
  * Navicula cendronii Manguin
  * Navicula centraster Cleve
  * Navicula centropunctata Hustedt
  * Navicula cerneutia Hohn
  * Navicula certa F. Meister
  * Navicula chandolensis Gandhi
  * Navicula charlottae Foged
  * Navicula chasmaensis Foged
  * Navicula chasmigera Cholnoky
  * Navicula chi Cleve
  * Navicula chiarae Lange-Bertalot & Genkal
  * Navicula chinensis Skvortzov
  * Navicula cholnokyana Foged
  * Navicula cholnokyii Gandhi
  * Navicula chyzerii Pantocsek
  * Navicula cimex Cholnoky
  * Navicula cincta (Ehrenberg) Ralfs in Pritchard
  * Navicula cinctaeformis Hustedt
  * Navicula cingulatoides Cholnoky
  * Navicula cinna Hohn & Hellerman
  * Navicula cipollae Zanon
  * Navicula citriformis Cleve-Euler
  * Navicula citrus Krasske
  * Navicula clagesii Gerd Moser, Lange-Bertalot & Metzeltin
  * Navicula claromontensis Héribaud
  * Navicula claytonii Carter
  * Navicula climacospheniae Booth
  * Navicula cluthensis Gregory
  * Navicula cluthensoides Hustedt
  * Navicula coccinella Metzeltin & Lange-Bertalot
  * Navicula cocconioides Carter
  * Navicula coei Cholnoky
  * Navicula colii Héribaud
  * Navicula collersonii Roberts & McMinn
  * Navicula columbiana Hustedt
  * Navicula columnaris Ehrenberg
  * Navicula comerei Héribaud
  * Navicula comoides (Dillwyn) H. Peragallo & M. Peragallo
  * Navicula completa Hustedt
  * Navicula completaoides Foged
  * Navicula compositestriata Jasnitsky
  * Navicula compressicauda Schmidt
  * Navicula concamerata Hustedt
  * Navicula concentrica Carter
  * Navicula concinna Hustedt
  * Navicula concordia Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
  * Navicula confidens Cholnoky
  * Navicula congerana Hagelstein
  * Navicula consanguinea Cleve
  * Navicula consentanea Hustedt
  * Navicula contempta Krasske
  * Navicula contentaeformis Manguin
  * Navicula contortula Sovereign
  * Navicula contraria Patrick
  * Navicula convergens Patrick
  * Navicula coraliana Metzeltin & Lange-Bertalot
  * Navicula cordillerae Frenguelli
  * Navicula corrugata Manguin
  * Navicula cortanensis Krasske
  * Navicula corticela Manguin ex Kociolek & Reviers
  * Navicula corymbosa (Agardh) Cleve
  * Navicula costuloides Skvortzov
  * Navicula crassirostris Grunow in Cleve & Grunow
  * Navicula crassulexigua Reichardt
  * Navicula craticularis Frenguelli
  * Navicula cremorne Hohn & Hellerman
  * Navicula criophiliforma Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
  * Navicula crispa Krasske
  * Navicula cristula Hohn
  * Navicula crocodill Cholnoky
  * Navicula cronullensis Wood
  * Navicula crucialis Frenguelli
  * Navicula crucifera Grunow in Schmidt
  * Navicula crucigeriformis Hustedt
  * Navicula cryptocefalsa Lange-Bertalot
  * Navicula cryptocephala Kützing
  * Navicula cryptocephaloides Hustedt
  * Navicula cryptofallax Lange-Bertalot & G. Hofmann
  * Navicula cryptogaster Lowe
  * Navicula cryptorrhynchus Cholnoky
  * Navicula cryptostriata Salah
  * Navicula cryptotenella Lange-Bertalot
  * Navicula cryptotenelloides Lange-Bertalot
  * Navicula csaszkaae Pantocsek
  * Navicula cubitus Tempère & Brun
  * Navicula cucullus Pantocsek
  * Navicula cuneata O'Meara
  * Navicula curiosa Hustedt
  * Navicula curta Hustedt
  * Navicula curtisterna Lange-Bertalot
  * Navicula curvilineata A. Mann
  * Navicula curvipunctata Leuduger-Fortmorel
  * Navicula cuspis O'Meara
  * Navicula cyclops A. Mann
  * Navicula cylindrata Kulikovskiy, Lange-Bertalot & Metzeltin
  * Navicula cymbelliformis Cholnoky
  * Navicula cymbula Donkin
  * Navicula cyprinus (W. Smith) Boyer
  * Navicula dahurica Skvortzov
  * Navicula dailyi Reimer
  * Navicula darwiniana Seddon & Witkowski
  * Navicula dealpina Lange-Bertalot
  * Navicula debilissima Grunow
  * Navicula demerara Grunow
  * Navicula demissa Hustedt
  * Navicula densestriata Hustedt
  * Navicula densilineolata Lange-Bertalot
  * Navicula detenta Hustedt
  * Navicula diagonalis Bailey
  * Navicula dibola Hohn
  * Navicula difficillima Hustedt
  * Navicula difficillimoides Hustedt
  * Navicula digitoconvergens Lange-Bertalot
  * Navicula digitoradiata (Gregory) Ralfs in Pritchard
  * Navicula dilucida Hustedt
  * Navicula directa (W. Smith) Brébisson
  * Navicula disputans Patrick
  * Navicula dissipata Hustedt
  * Navicula distans (W. Smith) Brébisson
  * Navicula distinctastriata Hohn & Hellerman
  * Navicula diversistriata Hustedt
  * Navicula doehleri Lange-Bertalot
  * Navicula duerrenbergiana Hustedt in Schmidt & al.
  * Navicula dulcis Krasske
  * Navicula dumontiae Baardseth & Taasen
  * Navicula duomedia Patrick
  * Navicula dystrophica Patrick
  * Navicula ebor Hohn & Hellerman
  * Navicula ehrlichiae Lange-Bertalot & Reichardt
  * Navicula eichhorniaephila Manguin ex Kociolek & Reviers
  * Navicula eidrigiana Carter
  * Navicula eiowana Ehrenberg
  * Navicula elaphros Hohn & Hellerman
  * Navicula electrolytifuga Lange-Bertalot & U. Rumrich
  * Navicula elegantissima M. Peragallo in Tempère & Peragallo
  * Navicula elmorei Patrick
  * Navicula elsoniana Patrick & Freese
  * Navicula eponka Hohn
  * Navicula erifuga Lange-Bertalot in Kammer & Lange-Bertalot
  * Navicula escambia (R.M. Patrick) Metzeltin & Lange-Bertalot
  * Navicula evexa Sovereign
  * Navicula exilis Kützing
  * Navicula exilissima Grunow in Van Heurck
  * Navicula expecta VanLandingham
  * Navicula fabiformis Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
  * Navicula faceta Hustedt
  * Navicula farta Hustedt in Schmidt & al.
  * Navicula fauta Hustedt
  * Navicula festiva Krasske
  * Navicula feuerbornii Hustedt
  * Navicula flagellifera Hustedt
  * Navicula flanatica Grunow
  * Navicula flandriae Van de Vijver & A. Mertens
  * Navicula flatheadensis Bahls
  * Navicula flavasinensis Moghadam
  * Navicula flebilis Cholnoky
  * Navicula flexuosa Ehrenberg
  * Navicula fluens Hustedt
  * Navicula fluminitica Camburn
  * Navicula formenterae Cleve
  * Navicula fortis (Gregory) Ralfs
  * Navicula fragilarioides Krasske
  * Navicula freesei Patrick & Freese
  * Navicula friedelhinziae Wojtal, Ognjanova-Rumenova, Buczkó & Van de Vijver
  * Navicula friesneri Reimer
  * Navicula friska Carter
  * Navicula fritschii Lund
  * Navicula frugalis Hustedt
  * Navicula fulva Ehrenberg
  * Navicula fusidium Ehrenberg
  * Navicula galapagoensis Seddon & Witkowski
  * Navicula galloae Bahls
  * Navicula gaufinii Moghadam
  * Navicula geitleri Hustedt
  * Navicula gelida Grunow
  * Navicula genifera Schmidt
  * Navicula genovefae Fusey
  * Navicula gerloffii Schimanski
  * Navicula germainii Wallace
  * Navicula germanopolonica Witkowski & Lange-Bertalot
  * Navicula geronimensis Potapova in Potapova & Charles
  * Navicula gieskesii Cholnoky
  * Navicula glaciei Van Heurck
  * Navicula globulifera Hustedt
  * Navicula glomus Carter
  * Navicula goersii Bahls
  * Navicula gololobovae Chudaev
  * Navicula gondwana Lange-Bertalot
  * Navicula gottlandica Grunow
  * Navicula graciloides Mayer
  * Navicula gradatoides Cholnoky
  * Navicula granii (E. Jørgensen) Gran
  * Navicula grasmueckii Lange-Bertalot
  * Navicula gregaria Donkin
  * Navicula grevilleana Hendey
  * Navicula grimmei Krasske
  * Navicula groschopfii Hustedt
  * Navicula gurovii Pantocsek
  * Navicula guttata Grunow
  * Navicula gysingensis Foged
  * Navicula habena Hohn & Hellerman
  * Navicula hagelsteinii Hustedt
  * Navicula halinae Hustedt
  * Navicula hamiltonii Witkowski, Lange-Bertalot & Metzeltin
  * Navicula hanseatica Lange-Bertalot & Stachura in Witkowski, Lange-Bertalot & Stachura
  * Navicula hansenii M. Møller
  * Navicula harderi Hustedt in Brendemühl
  * Navicula hariola Cholnoky
  * Navicula harmoniae Bahls
  * Navicula hasta Pantocsek
  * Navicula hastata Jurilj
  * Navicula hastatula Lange-Bertalot & Miho
  * Navicula hedinii Hustedt
  * Navicula heimansii van Dam & Kooyman
  * Navicula heimansioides Lange-Bertalot
  * Navicula henriquesii Zimmermann
  * Navicula herbstiae Metzeltin & Lange-Bertalot
  * Navicula heufleri Grunow
  * Navicula hintzii Lange-Bertalot
  * Navicula hippodontaformis Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
  * Navicula hodgeana Patrick & Freese
  * Navicula hofmanniae Lange-Bertalot
  * Navicula humboldtiana Lange-Bertalot & U. Rumrich
  * Navicula hustedtiana Simonsen
  * Navicula hyalina (Ehrenberg) Kützing
  * Navicula illinoensis Ehrenberg
  * Navicula imbellis Hohn & Hellerman
  * Navicula imbricata Bock
  * Navicula imperfecta Cleve
  * Navicula impexa Hustedt
  * Navicula incarum U. Rumrich & Lange-Bertalot
  * Navicula incomitatus Hohn & Hellerman
  * Navicula incomposita Hagelstein
  * Navicula indemnis Hohn & Hellerman
  * Navicula indianensis Reimer
  * Navicula indicatrix VanLandingham
  * Navicula inflata (Kützing) Kützing
  * Navicula inflexa (Gregory) Ralfs in Pritchard
  * Navicula infrenis Hohn & Hellerman
  * Navicula ingapirca Lange-Bertalot & U. Rumrich
  * Navicula ingenua Hustedt
  * Navicula ingrata Krasske
  * Navicula inpossibilis Cholnoky
  * Navicula insequens Hustedt
  * Navicula insulsa Metzeltin & Lange-Bertalot
  * Navicula ireneae Van de Vijver, Jarlman & Lange-Bertalot
  * Navicula irmengardis Lange-Bertalot
  * Navicula irminae Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
  * Navicula isabelensiformis Seddon & Witkowski
  * Navicula isabelensiminor Seddon & Witkowski
  * Navicula isabelensis Seddon & Witkowski
  * Navicula isabelensoides Seddon & Witkowski
  * Navicula iserentantii Lange-Bertalot & Witkowski
  * Navicula jakovljevici Hustedt
  * Navicula jeffreyi Hallegraef & Burford
  * Navicula jentzschii Grunow
  * Navicula johannrossii Giffen
  * Navicula jonssonii Østrup
  * Navicula kariana Grunow in Cleve & Grunow
  * Navicula karsia Hohn
  * Navicula kefvingensis (Ehrenberg) Kützing
  * Navicula kepesii Grunow
  * Navicula kincaidii Sovereign
  * Navicula kisber Hohn & Hellerman
  * Navicula kjellmanii (Cleve in Cleve & Grunow) Cleve
  * Navicula kohlenbachii Lange-Bertalot & U. Rumrich
  * Navicula kohlmaieri Lange-Bertalot
  * Navicula korzeniewskii Witkowski, Lange-Bertalot & Metzeltin
  * Navicula kotschyi Grunow
  * Navicula krammerae Lange-Bertalot
  * Navicula kuseliana Lange-Bertalot & U. Rumrich
  * Navicula lacunarum Grunow
  * Navicula lagerstedtii O'Meara
  * Navicula lagunae Seddon & Witkowski
  * Navicula lalia Hohn & Hellerman
  * Navicula lanceolata (Agardh) Kützing
  * Navicula lancettula Schumann
  * Navicula latelongitudinalis Patrick
  * Navicula laterostrata Hustedt
  * Navicula lauca U. Rumrich & Lange-Bertalot
  * Navicula leistikowii Lange-Bertalot
  * Navicula lenzii Hustedt
  * Navicula lepidissima Cleve-Euler
  * Navicula leptoloba Meister
  * Navicula leptorhynchus Ehrenberg
  * Navicula leptostriata Jørgensen
  * Navicula libellus Gregory
  * Navicula libonensis Schoeman
  * Navicula limata Hustedt
  * Navicula lineola Grunow
  * Navicula lirata Ehrenberg
  * Navicula litos Hohn & Hellerman
  * Navicula lohmannii Lange-Bertalot & U. Rumrich
  * Navicula loibl-sittlerii E. Reichardt
  * Navicula longa (Gregory) Ralfs in Pritchard
  * Navicula longicephala Hustedt
  * Navicula luciae Witkowski & Lange-Bertalot in Lange-Bertalot & Genkal
  * Navicula lucidula Grunow
  * Navicula ludloviana Schmidt
  * Navicula lumbricastriata Hohn & Hellerman
  * Navicula lundii Reichardt
  * Navicula lusitanica Zimmermann
  * Navicula lusoria Giffen
  * Navicula luzonensis Hustedt
  * Navicula macaronesica Lange-Bertalot
  * Navicula maculata (Bailey) Edwards
  * Navicula madeirensis Lange-Bertalot
  * Navicula magnifica Hustedt
  * Navicula mahoodii Witkowski & Witon
  * Navicula maidanae Metzeltin & Lange-Bertalot
  * Navicula mannii Hagelstein
  * Navicula margalithii Lange-Bertalot
  * Navicula martyi Lauby
  * Navicula mascarenae (Coste & Ricard) Metzeltin & Lange-Bertalot
  * Navicula meandrinoides Hustedt
  * Navicula mediacomplexa Hohn & Hellerman
  * Navicula mediahelos Hohn & Hellerman
  * Navicula medicostata Reichardt
  * Navicula medioconvexa Hustedt
  * Navicula mediterranea Cleve & Brun
  * Navicula melanesica Lange-Bertalot & Steindorf
  * Navicula menaiana Hendey
  * Navicula meniscoides Hustedt
  * Navicula menisculus Schumann
  * Navicula meniscus Schumann
  * Navicula meulemansii Mertens, Witkowski & Lange-Bertalot
  * Navicula mica Hohn & Hellerman
  * Navicula microcari Lange-Bertalot
  * Navicula microdicta Cholnoky
  * Navicula microdigitoradiata Lange-Bertalot
  * Navicula micropupula Cholnoky
  * Navicula migma Hohn & Hellerman
  * Navicula minnewaukonensis Elmore
  * Navicula minthe Hohn & Hellerman
  * Navicula minuscula Grunow in Van Heurck
  * Navicula minuta Skvortzov
  * Navicula misella Hustedt
  * Navicula moenofranconica Lange-Bertalot
  * Navicula mollicula Hustedt
  * Navicula mollis (W. Smith) Cleve
  * Navicula monmouthianastodderi Yermeloff
  * Navicula montanensis Moghadam
  * Navicula moskalii Metzeltin, Witkowski & Lange-Bertalot in Metzeltin & Witkowski
  * Navicula mournei Patrick
  * Navicula mucicola Hustedt
  * Navicula mucronata Elmore
  * Navicula multigramme Hohn & Hellerman
  * Navicula muraloides Hustedt
  * Navicula muscerda Hohn
  * Navicula namibica Lange-Bertalot & U. Rumrich in U. Rumrich, Lange-Bertalot & Rumrich
  * Navicula narinosa Hohn
  * Navicula nasuta Giffen
  * Navicula neglecta Kützing
  * Navicula nemoris Hohn & Hellerman
  * Navicula neoventricosa Hustedt
  * Navicula nigrii De Notaris
  * Navicula nimbus Hohn & Hellerman
  * Navicula nipponica (Skvortzov) Lange-Bertalot
  * Navicula nodulosa (Bréb.) Kützing
  * Navicula nolens Simonsen
  * Navicula nonana Cholnoky
  * Navicula normalis Hustedt
  * Navicula normaloides Cholnoky
  * Navicula northumbrica Donkin
  * Navicula notanda Østrup
  * Navicula notha Wallace
  * Navicula novaesiberica Lange-Bertalot
  * Navicula nugalis Hohn & Hellerman
  * Navicula oblonga (Kützing) Kützing
  * Navicula oblongata Kützing
  * Navicula oblongiformis Hustedt
  * Navicula obtusangula (Hustedt) Simonsen
  * Navicula obtuseprotracta Hustedt
  * Navicula ocallii Hohn
  * Navicula odiosa Wallace
  * Navicula oestrupii Cleve
  * Navicula ohiensis Ehrenberg
  * Navicula okawangoi Cholnoky
  * Navicula oligotraphenta Lange-Bertalot & G. Hofmann in Lange-Bertalot
  * Navicula omega Cleve
  * Navicula oppugnata Hustedt
  * Navicula orangiana Patrick
  * Navicula orbiculata Patrick
  * Navicula ordinaria Hustedt
  * Navicula oregonica Ehrenberg
  * Navicula oxigua (Gregory) Müller
  * Navicula paanaensis Cleve-Euler
  * Navicula paca Hohn & Hellerman
  * Navicula pachyptera Ehrenberg
  * Navicula pagophila Grunow
  * Navicula palpebralis (Brébisson) W. Smith
  * Navicula palpebrulum Cholnoky
  * Navicula pampeana Frenguelli
  * Navicula papilioarea Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
  * Navicula parablis Hohn & Hellerman
  * Navicula paracari Lange-Bertalot
  * Navicula parahasta Lange-Bertalot & Miho
  * Navicula parapontica Witkowski, Kulikovskiy, Nevrova & Lange-Bertalot
  * Navicula paratunkae Peterson
  * Navicula pargemina Underwood & Yallop
  * Navicula parinacota U. Rumrich & Lange-Bertalot
  * Navicula parodia Hohn
  * Navicula partabgarhensis Gandhi
  * Navicula parthenopea H. Peragallo & M. Peragallo
  * Navicula parunculus Hustedt
  * Navicula parva (Ehrenberg) Ralfs in Pritchard
  * Navicula parvipendata Cholnoky
  * Navicula patula W. Smith
  * Navicula paucivisitata Patrick
  * Navicula paul-schulzii Witkowski & Lange-Bertalot
  * Navicula paupercula Lange-Bertalot & U. Rumrich
  * Navicula pavillardi Hustedt
  * Navicula pediculus Cleve
  * Navicula pelagica Cleve
  * Navicula pellicola Brockmann
  * Navicula pelliculosa (Kützing) Hilse
  * Navicula pellucidoides Hustedt
  * Navicula pennata Schmidt in Schmidt & al.
  * Navicula peragalli Brun
  * Navicula peratomus Hustedt
  * Navicula peregrina (Ehrenberg) Kützing
  * Navicula peregrinopsis Lange-Bertalot & Witkowski
  * Navicula perexigua Østrup
  * Navicula perhyalina Cleve-Euler
  * Navicula perlatoides Hustedt
  * Navicula perlucens Østrup
  * Navicula perminuta Grunow in Van Heurck
  * Navicula permulsa Hustedt
  * Navicula perobesa Hustedt
  * Navicula perotii Patrick & Freese
  * Navicula perparva Hustedt
  * Navicula perpendicularis Cleve-Euler
  * Navicula perpicea Kulikovskiy, Lange-Bertalot & Metzeltin
  * Navicula perrhombus (Hustedt) Simonsen
  * Navicula perrostrata Hustedt
  * Navicula perrotettii (Grunow) Cleve
  * Navicula persica Rabenhorst
  * Navicula pertenuis Hustedt
  * Navicula pertinax Cholnoky
  * Navicula perturbata Jurilj
  * Navicula peterseni Hustedt
  * Navicula peticolasii M. Peragallo in Tempère & M. Peragallo
  * Navicula petrmarvanii Falasco & Ector
  * Navicula phyllepta Kützing
  * Navicula phylleptosoma Lange-Bertalot in Lange-Bertalot & Genkal
  * Navicula phylleptosomaformis Seddon & Witkowski
  * Navicula piercei Bahls
  * Navicula pierre-comperei Lange-Bertalot & G. Hofmann
  * Navicula platalea Ehrenberg
  * Navicula platystoma Ehrenberg
  * Navicula platyventris F. Meister
  * Navicula pletura Hohn
  * Navicula plicata Donkin
  * Navicula podzorskii Lange-Bertalot
  * Navicula polaris Lagerstedt
  * Navicula pontica (Mereschkowsky) Witkowski, Kulikovskiy, Nevrova & Lange-Bertalot
  * Navicula porifera Hustedt
  * Navicula potzgeri Reimer
  * Navicula praedicabilis Simonsen
  * Navicula praedii Cholnoky
  * Navicula praeterita Hustedt
  * Navicula pragma Hohn & Hellerman
  * Navicula pseudoarvensis Hustedt
  * Navicula pseudobryophila Hustedt
  * Navicula pseudofrickia Patrick
  * Navicula pseudokotschyi Lange-Bertalot in Kammer & Lange-Bertalot
  * Navicula pseudolacertosa Cholnoky
  * Navicula pseudolanceolata Lange-Bertalot
  * Navicula pseudonivalis Bock
  * Navicula pseudopalebralis Hendey
  * Navicula pseudopelliculosa Manguin
  * Navicula pseudoppugnata Lange-Bertalot & Miho
  * Navicula pseudoreinhardtii Patrick
  * Navicula pseudosalinarioides Giffen
  * Navicula pseudosilicula Hustedt
  * Navicula pseudotenelloides Krasske
  * Navicula pseudoventralis Hustedt
  * Navicula punctata Donkin
  * Navicula quadripartita Hustedt
  * Navicula quadripedis Cleve-Euler
  * Navicula quarnerensoides Hustedt
  * Navicula quasidisjuncta Lange-Bertalot & U. Rumrich
  * Navicula quechua Lange-Bertalot & U. Rumrich
  * Navicula rabenhorstii Ralfs
  * Navicula radians Héribaud
  * Navicula radiosa Kützing
  * Navicula radiosafallax Lange-Bertalot
  * Navicula radiosiola Lange-Bertalot
  * Navicula radiostriata (Hustedt) Simonsen
  * Navicula rainierensis Sovereign
  * Navicula rajmundii Witkowski, Lange-Bertalot & Metzeltin
  * Navicula rakowskae Lange-Bertalot
  * Navicula ramosissima (Agardh) Cleve
  * Navicula ranomafanensis (Manguin) Metzeltin & Lange-Bertalot
  * Navicula recava Hohn & Hellerman
  * Navicula recens Lange-Bertalot in Krammer & Lange-Bertalot
  * Navicula recurva (F. Meister) Witkowski, Lange-Bertalot & Metzeltin
  * Navicula recurvata Gran
  * Navicula reichardtiana Lange-Bertalot in Lange-Bertalot & Krammer
  * Navicula reinhardtii (Grunow) Grunow
  * Navicula retusa Donkin
  * Navicula rhodana Hohn & Hellerman
  * Navicula rhynchocephala Kützing
  * Navicula rhynchotella Lange-Bertalot
  * Navicula ricardae Lange-Bertalot
  * Navicula riediana Lange-Bertalot & U. Rumrich in U. Rumrich, Lange-Bertalot & Rumrich
  * Navicula riotecensis Metzeltin & Lange-Bertalot
  * Navicula rivalis Hohn & Hellerman
  * Navicula rivulorum Lange-Bertalot & U. Rumrich
  * Navicula rolandii Wunsam, Witkowski & Lange-Bertalot
  * Navicula rostellata Kützing
  * Navicula rotaeana (Rabenh.) Grunow in Van Heurck
  * Navicula rotesta Carter
  * Navicula rugula Hohn & Hellerman
  * Navicula rumaniensis Hustedt
  * Navicula runtuensis Cholnoky
  * Navicula rusticensis Lobban
  * Navicula sabiniana Patrick
  * Navicula sagitta Hohn & Hellerman
  * Navicula salinarum Grunow
  * Navicula salinicola Hustedt
  * Navicula sanctaecrucis Østrup
  * Navicula sanctamargaritae Beauger
  * Navicula saugerii Desmazieres
  * Navicula savannahiana Patrick
  * Navicula scabellum Hustedt
  * Navicula scalprum Kützing
  * Navicula scaniae Van de Vijver, Jarlman & Lange-Bertalot
  * Navicula schaarschmidtii Pantocsek
  * Navicula schadei Krasske
  * Navicula schmassmannii Hustedt
  * Navicula schroeteri F. Meister
  * Navicula schweigeri Bahls
  * Navicula scintillosa Manguin
  * Navicula scoliopleuroides Quint
  * Navicula scoresbyi Foged
  * Navicula scottiae Cholnoky
  * Navicula scutula Hohn
  * Navicula scutum Schumann
  * Navicula secreta Pantocsek
  * Navicula seibigiana Lange-Bertalot
  * Navicula semen Ehrenberg
  * Navicula semenoides Hustedt
  * Navicula semidiversa Manguin
  * Navicula seminularia Cholnoky
  * Navicula seminuloides Hustedt
  * Navicula septata Hustedt
  * Navicula septenaria Bailey
  * Navicula septentrionalis (Grunow) Gran
  * Navicula sequens Barber & Carter
  * Navicula serena Frenguelli
  * Navicula sericea Cholnoky
  * Navicula setanensis Okuno
  * Navicula setschwanensis Skuja
  * Navicula setzeri Patrick & Freese
  * Navicula severascens Cholnoky
  * Navicula sibirica (Grunow in Cleve & Möller) Cleve
  * Navicula sieminskiae Lange-Bertalot & Witkowski
  * Navicula sigma Ehrenberg
  * Navicula silens Cholnoky
  * Navicula silicea Skvortzov
  * Navicula silvahercynia Lange-Bertalot
  * Navicula silvatica Cholnoky
  * Navicula silvestrina Zanon
  * Navicula silvicola Cholnoky
  * Navicula simplex Krasske
  * Navicula simplus F. Meister
  * Navicula simula Patrick
  * Navicula singularis Schmidt
  * Navicula sitiens Cholnoky
  * Navicula sjoersii Busse & Snoeus
  * Navicula skabitchewskyayae Kulikovskiy, Lange-Bertalot & Metzeltin
  * Navicula skabitschewsky Sabelina
  * Navicula skalenastriata Hohn
  * Navicula skiftei Foged
  * Navicula slesvicensis Grunow in Van Heurck
  * Navicula smeerenburgensis Foged
  * Navicula sorella Hohn & Hellerman
  * Navicula sovereignii Bahls
  * Navicula spicula (Hickie) Cleve
  * Navicula spirata Hustedt
  * Navicula splendicula VanLandingham
  * Navicula spuria Cleve
  * Navicula stachurae Witkowski, Lange-Bertalot & Metzeltin
  * Navicula staffordiae Bahls
  * Navicula stankovicii Hustedt
  * Navicula starmachii Witkowski & Lange-Bertalot
  * Navicula starmachioides (Witkowski & Lange-Bertalot) Witkowski & Lange-Bertalot in Metzeltin & Witkowski
  * Navicula staurifera Thomas in Thomas & Chase
  * Navicula stompsii Cholnoky
  * Navicula streckerae Lange-Bertalot & Witkowski in Witkowski & al.
  * Navicula striolata (Grunow) Lange-Bertalot
  * Navicula structa Lange-Bertalot & Steindorf
  * Navicula subadnata Hustedt
  * Navicula subagnita Proschkina-Lavrenko
  * Navicula subalpina Reichardt
  * Navicula subapiculata (Grunow in Cleve & Grunow) Hustedt
  * Navicula subarvensis Hustedt
  * Navicula subconcentrica Lange-Bertalot
  * Navicula subcontenta Hustedt
  * Navicula subdiffusa Hustedt
  * Navicula subelata Gandhi
  * Navicula subexilissima Carter
  * Navicula subfasciata Patrick
  * Navicula subhexagona Hustedt
  * Navicula subinflatoides Hustedt
  * Navicula subnympharum Hustedt
  * Navicula subocculta Hustedt
  * Navicula subrhynchocephala Hustedt
  * Navicula subrostellata Hustedt
  * Navicula subrotundata Hustedt
  * Navicula subseminulum Hustedt in Brendemühl
  * Navicula subsulcata Hustedt
  * Navicula subvasta Carter
  * Navicula subwalkeri Bahls & Potapova
  * Navicula superba Cleve
  * Navicula supergregaria Lange-Bertalot & U. Rumrich in U. Rumrich, Lange-Bertalot & Rumrich
  * Navicula supleeorum Bahls
  * Navicula suprinii Gerd Moser, Lange-Bertalot & Metzeltin
  * Navicula swaniana Moghadam
  * Navicula symmetrica Patrick
  * Navicula syvertsenii Witkowski, Metzeltin & lange-Bertalot in Metzeltin & Witkowski
  * Navicula szlachetkoi Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
  * Navicula taedens Cholnoky
  * Navicula taedia Wallich
  * Navicula tanakae Fukushima, Ko-Bayashi & Yoshitake
  * Navicula taraxa Hohn & Hellerman
  * Navicula tenelloides Hustedt
  * Navicula tentata Cholnoky
  * Navicula tenuipunctata Hustedt
  * Navicula tenuis Krasske
  * Navicula texana Patrick
  * Navicula thermes Elmore
  * Navicula thienemannii Hustedt
  * Navicula torifera Hustedt
  * Navicula tracery Hohn & Hellerman
  * Navicula transistantioides Foged
  * Navicula transitans Cleve
  * Navicula transversa Bory
  * Navicula tridentula Krasske
  * Navicula trigonocephala Cleve
  * Navicula trilatera Bahls
  * Navicula tripunctata (O.F. Müller) Bory
  * Navicula trivialis Lange-Bertalot
  * Navicula trophicatrix Lange-Bertalot in Lange-Bertalot & Metzeltin
  * Navicula tropicoidea Witkowski, Metzeltin & Lange-Bertalot
  * Navicula tulugakii Carter
  * Navicula turris Hustedt in Schmidt & al.
  * Navicula ultratenelloides Lange-Bertalot
  * Navicula umbra Hohn & Hellerman
  * Navicula uniseriata Østrup
  * Navicula upsaliensis (Grunow) M. Peragallo
  * Navicula upupensis Cholnoky
  * Navicula utlandshoerniensis VanLandingham
  * Navicula valida Cleve & Grunow
  * Navicula vandamii Schoeman & Archibald
  * Navicula vaneei Lange-Bertalot in Witkowski, Lange-Bertalot & Stachura
  * Navicula vanhoeffenii Gran
  * Navicula vanidica Cholnoky
  * Navicula vara Hustedt in Schmidt
  * Navicula varians Gregory
  * Navicula vekhovii Lange-Bertalot & Genkal
  * Navicula venerablis Hohn & Hellerman
  * Navicula veneta Kützing
  * Navicula vilaplanii (Lange-Bertalot & Sabater) Lange-Bertalot & Sabater in Rumrich & al.
  * Navicula viminea Hustedt
  * Navicula viminoides Giffen
  * Navicula viridula (Kützing) Ehrenberg
  * Navicula viridulacalcis Lange-Bertalot
  * Navicula virihensis Cleve-Euler
  * Navicula visitanda Carter
  * Navicula vocanica Bahls & Potapova
  * Navicula vulpina Kützing
  * Navicula walkeri Sovereign
  * Navicula wardii Patrick
  * Navicula wasmundii Witkowski, Metzeltin & Lange-Bertalot
  * Navicula weberi Bahls
  * Navicula wellingtonia Cholnoky
  * Navicula whitefishensis Bahls
  * Navicula wiesneri Lange-Bertalot
  * Navicula wiktoriae Witkowski & Lange-Bertalot
  * Navicula wildii Lange-Bertalot
  * Navicula willisiae Seddon & Witkowski
  * Navicula winona Bahls
  * Navicula witkowskii Lange-Bertalot, Iserentant & Metzeltin
  * Navicula woltereckii Hustedt
  * Navicula wunsamiae Witkowski, Lange-Bertalot & Metzeltin
  * Navicula wygaschii Lange-Bertalot
  * Navicula yorkensis Camburn
  * Navicula zanoni Hustedt
  * Navicula zeta Cleve
  * Navicula zostereti Grunow
  
  Selon World Register of Marine Species (5 mars 2021) :
  
  * Navicula abaujensis Pantocsek, 1889
  * Navicula abbottii Cholnoky & Claus, 1961
  * Navicula abbreviata Grunow in Cleve & Grunow, 1880
  * Navicula abdita Krasske, 1929
  * Navicula abducta Manguin, 1952
  * Navicula abelioensis Foged, 1966
  * Navicula aberantior R.Simonsen, 2012
  * Navicula aberrans Cleve-Euler, 1953
  * Navicula aberrans Simonsen, 1960
  * Navicula abica Carter, 1966
  * Navicula abnormalis De Toni, 1891
  * Navicula abnormis Castracane, 1886
  * Navicula abnormis Grunow in Cleve & Möller, 1878
  * Navicula abnormis Grunow, 1880
  * Navicula abonuensis Foged, 1966
  * Navicula abraensis Foged, 1966
  * Navicula abrupta (W.Gregory) Donkin, 1870
  * Navicula abruptoides Hustedt, 1964
  * Navicula abscondita Hustedt, 1939
  * Navicula absoluta Hustedt, 1950
  * Navicula abstrusa Hustedt, 1939
  * Navicula abuensis Foged, 1966
  * Navicula abunda Hustedt, 1955
  * Navicula abundoides Cholnoky, 1963
  * Navicula abyssinica Grunow, 1886
  * Navicula acacia Harting, 1852
  * Navicula accedens Hustedt, 1954
  * Navicula acceptata Hustedt, 1950 †
  * Navicula acceptata sensu Foged, 1962
  * Navicula accommoda Hustedt in Messikommer, 1950
  * Navicula accomoda sensu Foged, 1958
  * Navicula accurata Hustedt, 1950
  * Navicula acephala Héribaud, 1903
  * Navicula acephala Schoeman, 1973
  * Navicula achnanthoides Skvortzow, 1936
  * Navicula achnanthoides Østrup, 1902
  * Navicula achthera M.H.Hohn & Hellerman, 1963
  * Navicula acidobionta Lange-Bertalot in Lange-Bertalot & Krammer, 1989
  * Navicula acidobiontica T.Wanatabe, 2004
  * Navicula acidophila Cholnoky, 1958
  * Navicula acnjnjnjus Ehrenberg, 1835
  * Navicula acrosphaeria A.Schmidt, 1875
  * Navicula actinota Andrews, 1970
  * Navicula acuminata sensu Wolle, 1890
  * Navicula acus Cleve in Cleve & Grunow, 1880
  * Navicula acuta Bory, 1822
  * Navicula acuta Kützing, 1844
  * Navicula acuta Meister, 1919
  * Navicula acuta Meister, 1934 (1935)
  * Navicula acuta Schütt, 1896
  * Navicula acuta Skvortzov, 1937
  * Navicula acuticuneata D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
  * Navicula acuticuneatula D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
  * Navicula acutirostris Hustedt, 1944
  * Navicula acutissima Hustedt in Schmidt & al., 1934
  * Navicula adakensis M.Hein
  * Navicula adamata Hustedt, 1952
  * Navicula adami Pantocsek, 1902
  * Navicula adampeensis Foged, 1966
  * Navicula adamsii Cholnoky, 1965
  * Navicula addaae Pantocsek, 1903
  * Navicula addicta Hustedt, 1966
  * Navicula adhaerens Mereschkovsky, 1901
  * Navicula admenda M.H.Hohn & Hellerman, 1963
  * Navicula admissa Hustedt, 1955
  * Navicula adnata Hustedt, 1937
  * Navicula adnatoides Cholnoky, 1963
  * Navicula adnatus Heiden & Kolbe, 1928
  * Navicula adriatica Grunow, 1860
  * Navicula adsidua Archibald, 1971
  * Navicula adumbrata Cholnoky, 1961
  * Navicula adumbrata M.H.Hohn & Hellerman, 1963
  * Navicula advena A.Schmidt, 1875
  * Navicula adversa Krasske, 1938
  * Navicula adversatrix Pantocsek, 1913
  * Navicula aedifex Pantocsek, 1913
  * Navicula aegyptiaca De Toni, 1891
  * Navicula aegyptiaca Zalat
  * Navicula aegyptica Salah, 1955
  * Navicula aemilia Forti, 1913
  * Navicula aemula Grunow
  * Navicula aequatorialis Heiden in Heiden & Kolbe, 1928
  * Navicula aequinoctialis Montagne, 1850
  * Navicula aequorea Hustedt, 1939
  * Navicula aerophila Krasske, 1932
  * Navicula aestimata Hustedt, 1964
  * Navicula aestuarii Brébisson ex Kützing, 1849
  * Navicula aestuarii Cleve
  * Navicula affinis Ehrenberg, 1843
  * Navicula affinis sensu Gregory, 1854
  * Navicula affinis sensu W. Smith, 1853
  * Navicula affirmata Leuduger-Fortmorel, 1879
  * Navicula africana Ehrenberg, 1839
  * Navicula africana Hustedt, 1910
  * Navicula africana Petit, 1876
  * Navicula afroalpina Gasse, 1978
  * Navicula agatkae Witkowski
  * Navicula agellus Ehrenberg, 1840
  * Navicula aggerica E.Reichardt, 1982
  * Navicula aggesta Hustedt, 1966
  * Navicula aglaos Hohn, 1966
  * Navicula agma M.H.Hohn & Hellerman, 1963
  * Navicula agmastriata Hohn & Hellerman, 1966
  * Navicula agnewii Cholnoky, 1962
  * Navicula agnita Hustedt, 1955
  * Navicula agnita Hustedt, 1966
  * Navicula agrestiformis H.P.Gandhi ex Karthick, 2020
  * Navicula agrestis Hustedt, 1936
  * Navicula agulhasica Cholnoky, 1959
  * Navicula ahmedabadensis VanLandingham, 1975
  * Navicula aikenensis Patrick, 1959
  * Navicula airdevronsixii D.E. Kellogg, M. Stuiver, T.B. Kellogg & G.H. Denton, 1980
  * Navicula aitchelbee L.L.Bahls, 2012
  * Navicula ajajensis Skabichevskii, 1936
  * Navicula ajenaensis Foged, 1966
  * Navicula akebergii
  * Navicula aketechiensis Foged, 1966
  * Navicula akimensis Foged, 1966
  * Navicula aktinoides Skuja, 1937
  * Navicula alandica
  * Navicula alaskana Patrick & Freese, 1961
  * Navicula alata Cleve in Cleve & Moller, 1882
  * Navicula albanica Krenner, 1926
  * Navicula albinensis Grunow, 1884
  * Navicula albinensis sensu Cleve-Euler, 1939
  * Navicula alea M.H.Hohn & Hellerman, 1963
  * Navicula aleemi Hustedt in Hustedt & Aleem, 1951
  * Navicula aleemii Hustedt, 1951
  * Navicula aleksandrae Lange-Bertalot, Bogaczewicz-Adamczak & Witkowski, 2003
  * Navicula algeriensis Montagne, 1846
  * Navicula algida Grunow, 1884
  * Navicula algor M.H.Hohn & Hellerman, 1963
  * Navicula alineae Lange-Bertalot, 2000
  * Navicula allista Hohn & Hellerman, 1966
  * Navicula allorgei É.Manguin, 1952
  * Navicula alluviana Heiden, 1900
  * Navicula alpha Cholnoky, 1955
  * Navicula alpha Cleve, 1893
  * Navicula alpha Heinzerling, 1908
  * Navicula alternans Schumann, 1867
  * Navicula alterofasciata Kooijman, 1982
  * Navicula altiplanensis U.Rumrich & Lange-Bertalot
  * Navicula amabilis Hustedt, 1966
  * Navicula ambigua Smith in A. Schmidt, 1897
  * Navicula ambigua sensu Pantocsek, 1902
  * Navicula americana F.W. Mills, 1934
  * Navicula amerinda Carter, 1966
  * Navicula amica Cleve & Grunow in Cleve, 1881
  * Navicula amici E.M. Nelson, 1910
  * Navicula amicii E.M. Nelson, 1911
  * Navicula amicii J.W. Bailey, 1851
  * Navicula amicorum Grunow
  * Navicula ammophila Grunow, 1862
  * Navicula amnicola M.H.Hohn & Hellerman, 1963
  * Navicula amoena Cleve manuscript in Cleve, 1894
  * Navicula amoena Manguin ex Kociolek & Reviers, 1996
  * Navicula amoenaeformis Manguin, 1964
  * Navicula amphibia Jousé, 1939
  * Navicula amphibola Cleve, 1891
  * Navicula amphiceropsis Lange-Bertalot & Rumrich, 2000
  * Navicula amphilepta Ehrenberg, 1857
  * Navicula amphioxys Ehrenberg, 1843
  * Navicula amphioxys sensu Kützing, 1844
  * Navicula amphioxys sensu Westendorp, 1845-1859
  * Navicula amphipleuroides Hustedt, 1955
  * Navicula amphirrhina Ehrenberg, 1842
  * Navicula amphirynchus sensu Donkin, 1871
  * Navicula amphisbaena Bory de Saint Vincent, 1824
  * Navicula amphisbaena sensu W. Smith, 1853
  * Navicula amphisphenia Ehrenberg, 1843
  * Navicula amphora Brun, 1891
  * Navicula amphora Ehrenberg, 1832
  * Navicula amphoroides O'Meara, 1867
  * Navicula amplectens Hustedt in Schmidt & al., 1934
  * Navicula amygdalina Hustedt in Schmidt & al., 1936
  * Navicula anassae Cholnoky, 1957
  * Navicula anatis Hohn & Hellerman, 1963
  * Navicula anca J.R.Carter, 1964
  * Navicula ancilla Hendey, 1964
  * Navicula ancora Weisse in Eichwald, 1844
  * Navicula ancyli Fontell in manus. Cleve-Euler, 1953
  * Navicula anderabensis Foged, 1959
  * Navicula anderssonii Cleve, 1881
  * Navicula andesitica Pantocsek, 1889
  * Navicula andium Frenguelli, 1942
  * Navicula andranokelyna Manguin, 1949
  * Navicula andrussowii Pantocsek, 1902
  * Navicula anenuta Fusey, 1953
  * Navicula angarae D.Metzeltin, M.S.Kulikovskiy & H.Lange-Bertalot, 2012
  * Navicula angelica Ralfs, 1861
  * Navicula angelorum Cleve
  * Navicula angleana Lauby, 1910
  * Navicula anglica sensu Donkin, 1871
  * Navicula anglophila Lange-Bertalot, 1987
  * Navicula angolensis Cholnoky, 1966
  * Navicula angulata Quekett, 1848
  * Navicula angulosa Gregory, 1856
  * Navicula angulosa sensu Cleve-Euler, 1915
  * Navicula angusta Grunow, 1860
  * Navicula angustata Ehrenberg, 1842
  * Navicula angustata Ehrenberg, 1843
  * Navicula angustefasciata Østrup, 1920
  * Navicula angustissima Hustedt in Schmidt & al., 1934
  * Navicula anhuiensis Yang, 1994
  * Navicula ankobraensis Foged, 1966
  * Navicula anna Hendey, 1973
  * Navicula annexa Hustedt, 1966
  * Navicula anopaia Cholnoky, 1961
  * Navicula antarctica Frenguelli, 1960
  * Navicula antarctica Karsten, 1905
  * Navicula antediluviana Hustedt, 1955 †
  * Navicula anthracis Cleve & Brun in Brun & Tempère, 1889
  * Navicula antinitescens M.Peragallo, 1908
  * Navicula antiqua Cleve-Euler, 1932
  * Navicula antiqua Grunow in Cleve & Möller, 1878
  * Navicula antiqua Schmidt ex Cleve & Möller, 1879
  * Navicula antiqua Skvortzow, 1937
  * Navicula antonii Lange-Bertalot, 2000
  * Navicula antonioides Van de Vijver, Jarlman & Lange-Bert., 2010
  * Navicula antverpiensis Van de Vijver & Lange-Bert., 2009
  * Navicula aoboensis
  * Navicula aokebergii Cleve-Euler, 1953
  * Navicula aperta Frenguelli, 1923
  * Navicula aperta Guermeur, 1954
  * Navicula aperta Schumann, 1867
  * Navicula apiculata Brébisson, 1854
  * Navicula apiculata Cleve-Euler, 1949
  * Navicula apiculata sensu Donkin, 1871
  * Navicula apiculata sensu Gregory, 1856
  * Navicula apiculatoreinhardtii M.B.Edlund & N.Soninkhishig, 2009
  * Navicula apis sensu Donkin, 1871
  * Navicula apis sensu Schmidt, 1872
  * Navicula appendiculata Rabenhorst, 1853
  * Navicula appendiculata sensu Pantocsek, 1892
  * Navicula applanata Hustedt, 1964
  * Navicula applicita Hustedt, 1964
  * Navicula applicitoides Hustedt, 1964
  * Navicula apposita Hustedt, 1954
  * Navicula approximata sensu Hendey, 1958
  * Navicula approximatella Hustedt
  * Navicula approximatoides Hustedt, 1987
  * Navicula apsteinii Pantocsek, 1902
  * Navicula apta Hustedt, 1955
  * Navicula aquaeductae (Krasske) Krasske, 1925
  * Navicula aquaeducti
  * Navicula aquaedurae Lange-Bertalot, 1993
  * Navicula aquintaniae
  * Navicula aquosa Archibald, 1966
  * Navicula arabica Grunow ex A.Schmidt, 1875
  * Navicula aradina Pantocsek, 1892
  * Navicula arata Grunow, 1882 †
  * Navicula arata sensu Cleve-Euler in Backman & Cleve-Euler, 1922
  * Navicula arata sensu Hustedt, 1937
  * Navicula araucaniana Frenguelli, 1934
  * Navicula arcana Pantocsek, 1913
  * Navicula archeriana O'Meara, 1874
  * Navicula archibaldiana Foged, 1975
  * Navicula arctica Cleve, 1873
  * Navicula arctissima Schmidt
  * Navicula arctotenelloides Lange-Bertalot & Metzeltin, 1996
  * Navicula arcuata Heiden, 1928
  * Navicula arcuata Pantocsek, 1892 †
  * Navicula arcus Ehrenberg, 1836
  * Navicula ardis Hohn, 1966
  * Navicula ardua Mann, 1907
  * Navicula arenaria Donkin, 1861
  * Navicula arenariaeformis Pantocsek, 1889
  * Navicula arenicola Grunow, 1882
  * Navicula arenicola sensu Cleve-Euler in Backman & Cleve-Euler, 1922
  * Navicula arenosa Lauby, 1909
  * Navicula arenula M.H.Hohn & Hellerman, 1963
  * Navicula areolata Hustedt, 1952
  * Navicula areschougiana Grunow
  * Navicula argestris Hustedt, 1937
  * Navicula arguens Skvortzow, 1937
  * Navicula argunensis Skvortzow, 1938
  * Navicula argutiola M.H.Hohn & Hellerman, 1963
  * Navicula argutula Hustedt, 1955
  * Navicula arida Bock, 1963
  * Navicula ariiensis H.Okuno, 1952 †
  * Navicula arkona Lange-Bertalot & Witkowski, 2001 †
  * Navicula armata J.R.Carter, 1964
  * Navicula armoricana Amossé, 1932
  * Navicula arraniensis O'Meara, 1875
  * Navicula artemidis Cholnoky, 1957
  * Navicula artificiosa Heiden in Heiden & Kolbe, 1928
  * Navicula arvensiformis Carter, 1970
  * Navicula arvensis Hustedt, 1937
  * Navicula arvensoides Hustedt, 1945
  * Navicula arverna M.Peragallo & Héribaud-Joseph, 1893
  * Navicula asanwinsoensis Foged, 1966
  * Navicula ascensionensis Van de Vijver, Wilfert, D.M. John & Lange-Bertalot, 2018
  * Navicula asellus Weinhold ex Hustedt, 1934
  * Navicula ashantiensis Foged, 1966
  * Navicula asiatica Meister, 1934 (1935)
  * Navicula asklepieionensis Foged, 1982
  * Navicula aspeitiaae Pantocsek, 1913
  * Navicula aspera Ehrenberg, 1840
  * Navicula aspera sensu Donkin, 1872
  * Navicula aspera sensu Schmidt in Schmidt & al., 1876
  * Navicula aspergilla Carter & Denny, 1992
  * Navicula aspersa Hustedt, 1966
  * Navicula associata Lange-Bertalot, 2001 †
  * Navicula assula Cholnoky, 1963
  * Navicula assuloides Giffen, 1973
  * Navicula astrolabensis Hendey, 1937
  * Navicula astutus Fontell in manus., Cleve-Euler, 1953
  * Navicula asymbasia M.H.Hohn & Hellerman, 1963
  * Navicula asymetrica Pantocsek, 1892
  * Navicula asymmetrica Cleve, 1883
  * Navicula atacamae Hustedt, 1927
  * Navicula atacamana Patrick, 1961
  * Navicula atalos Hohn, 1966
  * Navicula atasensis Simonsen, 1987
  * Navicula athenae A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
  * Navicula atomarius Skvortzow, 1936
  * Navicula atomus sensu Boye Petersen, 1915
  * Navicula atomus sensu Schumann, 1864
  * Navicula attwoodii M. Peragallo in Tempère & Peragallo, 1908
  * Navicula atwateri Seddon, Witkowski & Hemphill-Haley, 2011
  * Navicula aubertii Héribaud in Héribaud & al., 1920
  * Navicula aucklandica Grunow, 1863
  * Navicula aueri Krasske, 1949
  * Navicula augustissima Hustedt, 1935
  * Navicula aulacophaena Ehrenberg, 1854
  * Navicula aurangabadensis Sarode & Kamat, 1984
  * Navicula aurantiaca Schoeman, 1973
  * Navicula auriculata Hustedt, 1944
  * Navicula aurora Sovereign, 1958
  * Navicula australasiatica Y.Li & Metzeltin iin Li & al., 2020
  * Navicula australoceanica A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
  * Navicula australomediocris Lange-Bertalot & R.Schmidt, 1990
  * Navicula australoshetlandica Van de Vijver, 2011
  * Navicula austrocollegarum Lange-Bertalot & R.Voigt, 2001
  * Navicula austroshetlandica Carlson, 1913
  * Navicula avenacea sensu Pantocsek, 1902
  * Navicula avenaceoides H.P.Gandhi, 1964
  * Navicula avium (Tiffany, Herwig & Sterrenburg in Sterrenburg & al.) Yuhang Li & Kuidong Xu, 2017
  * Navicula avonensis Round, 1966
  * Navicula baardsethii Cleve-Euler, 1949
  * Navicula baccata Brun in Brun & Tempère, 1889
  * Navicula bachmannii Hustedt, 1961
  * Navicula bacillifera Pantocsek, 1889
  * Navicula bacilliformis Grunow, 1880
  * Navicula bacilloides Hustedt, 1945
  * Navicula bacillum Ehrenberg, 1839
  * Navicula bacillum sensu Gregory, 1856
  * Navicula bacterium Frenguelli, 1923
  * Navicula bacula M.H.Hohn & Hellerman, 1963
  * Navicula baculus Cleve, 1883
  * Navicula baddensis Gasse, 1978
  * Navicula bahiensis Zimmermann, 1918
  * Navicula bahuensoides Foged, 1975
  * Navicula bahusiensis sensu Cleve-Euler, 1915
  * Navicula bahusiensis sensu Ostrup, 1895
  * Navicula baicalcollegarum Kulikovskiy & Lange-Bertalot, 2012
  * Navicula baicalconcentrica M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
  * Navicula baicalensis Skvortzov & Meyer, 1928
  * Navicula baicalirmengardis Kulikovskiy Lange-Bertalot & Metzeltin, 2012
  * Navicula baicalofrigidicola D.Metzeltin, M.S.Kulikovskiy & H.Lange-Bertalot, 2012
  * Navicula baicalogracilis M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
  * Navicula baicaloradiosa Kulikovskiy Lange-Bertalot & Metzeltin, 2012
  * Navicula baileyana Grunow ex A.Schmidt, 1874
  * Navicula baileyensis Grunow in Cleve & Möller, 1879
  * Navicula baileyi Cholnoky, 1968
  * Navicula baileyi Ehrenberg
  * Navicula bainii Cholnoky, 1962
  * Navicula bakiana A.Witkowski & Lange-Bertalot, 2009
  * Navicula bakievae Metzeltin, Kulikovskiy & Lange-Bertalot, 2012
  * Navicula balatonis Pantocsek, 1902
  * Navicula balcanica Hustedt in Schmidt & al., 1934
  * Navicula baldjickiensis Heiden, 1905
  * Navicula baleyana
  * Navicula balliformis Mereschkowsky, 1903
  * Navicula baltica Ehrenberg, 1838
  * Navicula baltica Grunow in A. Schmidt, 1874
  * Navicula bamboiensis Foged, 1966
  * Navicula bannajensis Boye Petersen, 1946
  * Navicula bansoensis Foged, 1966
  * Navicula barbadense Vickers, 1905
  * Navicula barbara Heiden, 1928
  * Navicula barbarica Hustedt, 1949
  * Navicula barberi Hendey, 1964
  * Navicula barberiana Foged, 1979
  * Navicula barbitos A.Schmidt, 1888
  * Navicula barclayana Gregory, 1857
  * Navicula barentsii Foged, 1964
  * Navicula barkeriana O'Meara, 1875
  * Navicula barodensis H.P.Gandhi ex Karthick, 2020
  * Navicula barrowiana Patrick & Freese, 1961
  * Navicula bartholomei Cleve, 1878
  * Navicula basaltaeformis
  * Navicula basaltaeproxima J.Brun & Héribaud-Joseph
  * Navicula basilica Brun, 1891
  * Navicula basilica Pantocsek, 1892
  * Navicula bastianii M.Peragallo, 1909
  * Navicula bastowii Hustedt, 1955
  * Navicula bauemleri Pantocsek
  * Navicula bawdiaensis Foged, 1966
  * Navicula bdesma Hohn, 1961
  * Navicula beaufortiana Hustedt, 1955
  * Navicula beccariana Grunow, 1886
  * Navicula beckii Pantocsek, 1889
  * Navicula beketowii Mereschkowsky, 1902
  * Navicula bella Hustedt, 1937
  * Navicula bella Karajeva, 1964
  * Navicula bellatii Frenguelli, 1953
  * Navicula belliatula Archibald, 1971
  * Navicula bellissima Hustedt, 1966
  * Navicula bendaensis Schrader & Fenner, 1976
  * Navicula bengalensis Grunow in Schmidt & al., 1875
  * Navicula bergenensis Hohn, 1952
  * Navicula bergeni Hohn, 1952
  * Navicula bergeri
  * Navicula bergii Cleve-Euler, 1953
  * Navicula berriati Héribaud-Joseph
  * Navicula bertelsenii Foged, 1966
  * Navicula bertrandi Lauby, 1910
  * Navicula besarensis Giffen, 1980
  * Navicula beta Cleve, 1895
  * Navicula biaculeata Cleve-Euler, 1949
  * Navicula biagnita Simonsen, 1987
  * Navicula biakensis Cholnoky, 1963
  * Navicula bialbata H. Peragallo & M. Peragallo, 1898
  * Navicula biblos Cleve, 1891
  * Navicula bicapitata Hajós, 1959
  * Navicula bicapitata Heiden & Kolbe, 1928
  * Navicula bicapitata Jousé, 1936
  * Navicula bicapitata O'Meara, 1875
  * Navicula bicapitata sensu G.S. West, 1909
  * Navicula bicapitellata Hustedt, 1925
  * Navicula bicarinata Ehrenberg
  * Navicula bicephala Hustedt, 1952
  * Navicula bicephaloides Van de Vijver & Zidarova, 2011
  * Navicula biceps Bory, 1827
  * Navicula biceps sensu Schmidt in Schmidt & al., 1876
  * Navicula biceps sensu Schmidt in Schmidt & al., 1877
  * Navicula biclavata Cleve & Grove, 1891
  * Navicula biconfusa VanLandingham, 1975
  * Navicula biconica Patrick, 1959
  * Navicula biconifera Morren, 1835
  * Navicula biconstricta Grove & Sturt, 1887
  * Navicula biconstricta Grunow, 1878
  * Navicula bicontracta sensu Hustedt, 1930
  * Navicula bicontracta Østrup, 1902
  * Navicula bicuneata Grunow, 1860
  * Navicula bicuneolus Metzeltin & Lange-Bertalot, 1998
  * Navicula bicurvata De Toni, 1891
  * Navicula bicuspidata Cleve & Grunow in Cleve, 1881
  * Navicula biddulphioides Hustedt, 1966
  * Navicula bidentula J.B.Petersen, 1928
  * Navicula bievexa Hohn, 1961
  * Navicula bifax Hohn & Hellerman, 1966
  * Navicula bifissa Schmidt in Schmidt & al., 1897
  * Navicula bifrons Ehrenberg, 1833
  * Navicula bifurcatula Hustedt, 1964
  * Navicula bigemmata Mann, 1925
  * Navicula bigibba J.Y.Chen & H.Z.Zhu
  * Navicula biglobosa Schumann, 1867
  * Navicula bihastata A.Mann, 1924
  * Navicula bilineata Schumann, 1862
  * Navicula bilobata Leuduger-Fortmorel, 1879
  * Navicula bimaculata Pantocsek, 1889
  * Navicula binaria Schmidt in Schmidt & al., 1875
  * Navicula binocularis Smejev, 1872
  * Navicula binodulosa Sullivan & Reimer, 1975
  * Navicula bintila Carter & Denny, 1982
  * Navicula binziana T.Marsson, 1900
  * Navicula bipatens Heiden, 1906
  * Navicula bipectinalis Schumann, 1867
  * Navicula bipennata
  * Navicula bipodis
  * Navicula bipunctata Bory, 1827
  * Navicula bipunctata Grunow in Van Heurck, 1880
  * Navicula bipunctata O'Meara, 1872
  * Navicula bipustulata Mann, 1925
  * Navicula birhis Hohn, 1961
  * Navicula birostrata Gregory, 1855
  * Navicula biscalaris Brebisson in litt., Janisch ex W. Smith, 1856
  * Navicula biseriata Brockmann, 1952
  * Navicula biseriata Petit, 1877
  * Navicula bishti Singh, Nautiyal & Vimal, 1976
  * Navicula biskanteri Hustedt, 1939
  * Navicula bita Hohn, 1961
  * Navicula bitruncata Turpin, 1816-1830
  * Navicula bituminosa Pantocsek
  * Navicula bjoernoeyaensis D.Metzeltin, A.Witkowski & Lange-Bertalot, 1996
  * Navicula blasii Frenguelli, 1938
  * Navicula blazencicae Z. Levkov & S. Krstic in Levkov, Krstic, Metzeltin & Nakov, 2007
  * Navicula blazenciciae Z.Levkov & S.Krstic, 2007
  * Navicula bleischiana Janisch & Rabenhorst, 1863
  * Navicula bleischii Janisch in Schmidt & al., 1877
  * Navicula blessingii Gran, 1900
  * Navicula blotii Héribaud in Héribaud & al., 1920
  * Navicula bodosensis Pantocsek
  * Navicula boergesenii Østrup, 1913
  * Navicula bombiformis Leuduger-Fortmorel, 1892
  * Navicula bomboides A.W.F.Schmidt, 1874
  * Navicula bombus Donkin, 1872
  * Navicula bongrainii M. Peragallo, 1921
  * Navicula bonnieri Lauby, 1910
  * Navicula borbassii Pantocsek, 1902
  * Navicula borgesenii Østrup, 1913
  * Navicula borinquensis Hagelstein, 1939
  * Navicula boris-skvortzowii M.S.Kulikovskiy, D.Metzeltin & H.Lange-Bertalot, 2012
  * Navicula borneoensis Hustedt, 1966
  * Navicula borowkae A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
  * Navicula borscowii Mereschkowsky, 1902
  * Navicula borussica Cleve in Grunow, 1882
  * Navicula boryana Pantocsek, 1889
  * Navicula boseana Skvortzov
  * Navicula bossvikensis S. Busse & P. Snoeijs, 2002
  * Navicula bosumtwiensis Foged, 1966
  * Navicula botteriana Grunow
  * Navicula bottnica Grunow, 1880
  * Navicula boudetii M. Peragallo, 1921
  * Navicula bouhardi Héribaud, 1902
  * Navicula bouillantensis Metzeltin & Lange-Bertalot, 2007
  * Navicula bourgi Lauby, 1910
  * Navicula bourrellyi Manguin ex Kociolek & Reviers, 1996
  * Navicula bourrellyivera Lange-Bertalot, A.Witkowski & K.Stachura, 1998
  * Navicula boyei Østrup, 1920
  * Navicula bozenae Lange-Bertalot, Witkowski & Zgrundo, 2003
  * Navicula brachium Hustedt, 1944
  * Navicula brachysira Brébisson ex Rabenhorst, 1853
  * Navicula branchiata Mann, 1925
  * Navicula brasiliana (Cleve) Cleve, 1894
  * Navicula brasiliensis Grunow
  * Navicula brauniana Grunow, 1876
  * Navicula brebissonii Grunow in Van Heurck
  * Navicula brebissonii sensu Lagerstedt, 1873
  * Navicula brebissonii sensu Schmidt in Schmidt & al., 1876
  * Navicula brehmii Hustedt
  * Navicula brehmiodes Hustedt, 1952
  * Navicula breitenbuchii Lange-Bertalot, 2001
  * Navicula brekkaensoides Bock, 1963
  * Navicula bremensis Hustedt, 1957
  * Navicula breviata Hustedt, 1966
  * Navicula brevirostrata Hustedt in Schmidt & al., 1936
  * Navicula brevis Cleve-Euler, 1932
  * Navicula brevissima Hustedt, 1937
  * Navicula brevistriata Tempère & Peragallo, 1889-1895
  * Navicula britannica Hustedt & Aleem, 1951
  * Navicula brockmanni
  * Navicula broetzii Lange-Bertalot & E.Reichardt, 1996
  * Navicula brokenshirei R.F.Bastow, 1954
  * Navicula bronislaae I.Kaczmarska, 1976 †
  * Navicula bruchii Grunow in Cleve, 1881
  * Navicula brunelii Poulin, Hudon & Cardinal, 1982
  * Navicula brunii Brun, 1891
  * Navicula brunii Cleve-Euler, 1939
  * Navicula brunii Pantocsek, 1886
  * Navicula bruyanti Lauby, 1910
  * Navicula brygidae Lange-Bertalot, A.Witkowski & J.P.Kociolek, 2009
  * Navicula bryophila Østrup
  * Navicula bryophiloides Manguin, 1962
  * Navicula buccella M.H.Hohn & Hellerman, 1963
  * Navicula buchansiana Woodhead & Tweed, 1960
  * Navicula budayana Pantocsek, 1892
  * Navicula budda Skvortzow, 1935
  * Navicula budensis Grunow in Van Heurck, 1880
  * Navicula buderi Hustedt, 1954
  * Navicula buderiformis H.P.Gandhi ex Karthick, 2020
  * Navicula bulgariarum H. Lange-Bertalot & D. Metzeltin, 2006
  * Navicula bullata Norman in Ralfs in Pritchard, 1861
  * Navicula bulloides K.E. Lohman, 1957
  * Navicula burcki Reinhold, 1937
  * Navicula bushmanorum Cholnoky, 1957
  * Navicula butreensis Foged, 1966
  * Navicula caddoensis Bond, 1968 †
  * Navicula cadeei B.Van de Vijver & C.Cocquyt, 2009
  * Navicula cadoi Z.Levkov & S.Krstic, 2007
  * Navicula caduca Hustedt, 1942
  * Navicula caeca Mann, 1925
  * Navicula caenosus J.R.Carter & Bailey-Watts, 1981
  * Navicula caerulea O'Meara, 1875
  * Navicula calcuttensis Skvortzov
  * Navicula caldwellii Bastow, 1960
  * Navicula calida Hendey, 1964
  * Navicula calignosa Cleve & Grove, 1891
  * Navicula calva Østrup, 1913
  * Navicula calvata Manguin, 1964
  * Navicula camerata Cholnoky, 1966
  * Navicula campanile Cholnoky, 1961
  * Navicula campbellii M.Peragallo, 1908
  * Navicula campbellii Petit, 1877
  * Navicula camplanata (Grunow) Cleve, 1883
  * Navicula camprocarpa Kützing
  * Navicula campylodiscus Grunow
  * Navicula campylogramma Ehrenberg, 1853
  * Navicula canali-kharicutensis Guiry & Karthick, 2020
  * Navicula canaliculata Cleve, 1900
  * Navicula canalis R.M.Patrick, 1944
  * Navicula canariana Lange-Bertalot, 1993
  * Navicula cancellata Donkin, 1872
  * Navicula candida Schumann, 1867
  * Navicula canoris M.H.Hohn & Hellerman, 1963
  * Navicula cantonatii Lange-Bertalot, 2001
  * Navicula cantonensis Ehrenberg, 1847
  * Navicula capensis M. Peragallo, 1921
  * Navicula capillata Giffen, 1980
  * Navicula capitata Cleve, 1898
  * Navicula capitata Fontell, 1917
  * Navicula capitatoradiata Germain, 1981
  * Navicula capitellata Cleve-Euler, 1943
  * Navicula capitellata Skvortzow, 1935
  * Navicula capitive Turpin, 1827
  * Navicula capitulata Frenguelli
  * Navicula capsa Hohn, 1961
  * Navicula capsula Cleve-Euler, 1949
  * Navicula caractacus M.H.Hohn & Hellerman, 1963
  * Navicula carassius Ehrenberg, 1843
  * Navicula carassius sensu Grunow, 1860
  * Navicula cardiella Luchini, 1976
  * Navicula cardinaliculus (Cleve) Mann
  * Navicula cardinalis Ehrenberg, 1841 †
  * Navicula carecti Cholnoky, 1960
  * Navicula cari Ehrenberg, 1836
  * Navicula cari sensu Foged, 1958
  * Navicula cariana Jousé, 1939
  * Navicula caribaea Schmidt, 1874
  * Navicula carinata Ehrenberg, 1840
  * Navicula carinifera Grunow, 1874
  * Navicula cariocincta Lange-Bertalot apud Tsarenko, Lange-Bertalot, Stupina & Wasser, 2000
  * Navicula carlae A.Witkowski, Lange-Bertalot & J.P.Kociolek, 2009
  * Navicula carloffii Foged, 1966
  * Navicula carminata Hustedt, 1934
  * Navicula carniolensis Hustedt, 1945
  * Navicula carolinensis Ehrenberg, 1856
  * Navicula caroliniae Bahls, 2012
  * Navicula caroliniana Patrick, 1959
  * Navicula carpathorum Pantocsek
  * Navicula carstensenii Foged, 1966
  * Navicula carteri Van Landingham, 1975
  * Navicula carvajaliana Patrick
  * Navicula casei Cholnoky, 1954
  * Navicula casertana De Notaris in De Notaris & Baglietto, 1872
  * Navicula cassa W. Smith, 1859
  * Navicula cassieana Foged, 1979
  * Navicula castracanei Grunow in Cleve, 1881
  * Navicula catalanogermanica Lange-Bertalot & G.Hofmann, 1993
  * Navicula cataracta-rheni Lange-Bertalot, 1993
  * Navicula cataractrarum Hustedt, 1955
  * Navicula catarinensis Krasske, 1948
  * Navicula caterva Hohn & Hellermann, 1963
  * Navicula catharinae Ehrenberg, 1854
  * Navicula caucasica Ross, 1963
  * Navicula caudata Metzeltin, Kulikovskiy & Lange-Bertalot, 2012
  * Navicula caupulus Hohn, 1966
  * Navicula cavernae Cholnoky, 1957
  * Navicula ceciliae Van de Vijver, Jarlman & Lange-Bert., 2010
  * Navicula celinei Witkowski, Metzeltin & Lange-Bertalot in Metzeltin & Witkowski, 1996
  * Navicula cellesensis Héribaud & M. Peragallo in Héribaud, 1902
  * Navicula cendronii Manguin, 1960
  * Navicula centrafricana Fusey, 1964
  * Navicula centraster Cleve, 1895
  * Navicula centropunctata Hustedt, 1966
  * Navicula ceratogramma Ehrenberg, 1843
  * Navicula ceratostigma Ehrenberg, 1841
  * Navicula cerenutia Hohn, 1961
  * Navicula ceres Schumann, 1867
  * Navicula cerevisia Laslandes & Kociolek in Kociolek & al., 2014
  * Navicula cerneutia Hohn, 1961
  * Navicula certa Hustedt, 1945
  * Navicula certa Meister, 1934 (1935)
  * Navicula ceylanensis Leuduger-Fortmorel, 1879
  * Navicula ceylanica Skvortzow, 1932
  * Navicula ceylonica Skvortzow, 1930
  * Navicula chaberti Héribaud, 1903
  * Navicula chadwickii Foged, 1966
  * Navicula challengeri Grunow, 1880
  * Navicula chandolensis H.P.Gandhi, 1964
  * Navicula chansiensis Skvortzow, 1935
  * Navicula charlattii
  * Navicula charlottae Foged, 1951
  * Navicula charontis Ehrenberg, 1854
  * Navicula chasei Cholnoky, 1954
  * Navicula chasmaensis Foged, 1959
  * Navicula chasmigera Cholnoky, 1960
  * Navicula chaspula Carter & Denny, 1982
  * Navicula chassagnei Héribaud in Héribaud & al., 1920
  * Navicula chauhanii H.P.Gandhi ex Karthick, 2020
  * Navicula cheldonensis R.F.Bastow, 1957
  * Navicula chersonensis Meunier, 1910
  * Navicula cherubim Ross, 1972
  * Navicula chi Cleve, 1895
  * Navicula chiarae Lange-Bertalot & S.I.Genkal, 1999
  * Navicula chilena Lange-Bertalot, 1996
  * Navicula chimmoana O'Meara, 1872
  * Navicula chinensis Skvortzow, 1929
  * Navicula chingmaiensis Foged, 1972
  * Navicula chloridorum Cholnoky, 1968
  * Navicula cholnokyana Foged, 1975
  * Navicula cholnokyii H.P.Gandhi, 1964
  * Navicula cholonokyana Foged, 1975
  * Navicula chordata Archibald, 1966
  * Navicula chrissiana Cholnoky, 1965
  * Navicula chutteri Cholnoky, 1965
  * Navicula chyzerii Pantocsek, 1889
  * Navicula ciliata Corda, 1835
  * Navicula cimex Cholnoky, 1963
  * Navicula cincta (Ehrenberg) Ralfs, 1861
  * Navicula cincta Pantocsek, 1889
  * Navicula cincta Tarnavschi, 1930
  * Navicula cincta magna J. Brun, 1901
  * Navicula cinctaeformis Hustedt in Schmidt & al., 1936
  * Navicula cingens Skvortzov, 1937
  * Navicula cingulata Hustedt in Schmidt & al., 1936
  * Navicula cingulatoides Cholnoky, 1963
  * Navicula cinna M.H.Hohn & Hellerman, 1963
  * Navicula cipollae Zanon, 1933
  * Navicula circumcincta Grunow in Cleve & Möller, 1879
  * Navicula circumnodosa Brun, 1891
  * Navicula circumsuta Proschkina-Lavrenko, 1932
  * Navicula circumtexta F.Meister ex Hustedt, 1934
  * Navicula cistella Greville, 1863
  * Navicula citrea Schmidt in Schmidt & al., 1877
  * Navicula citriformis Cleve-Euler, 1953
  * Navicula citriformis E.G.Lupikina, 1965 †
  * Navicula citroides K.E. Lohman, 1957
  * Navicula citrus Cleve-Euler, 1939
  * Navicula citrus Krasske, 1923
  * Navicula clagesii Gerd Moser
  * Navicula clancula A.Schmidt, 1875
  * Navicula clarensiana Schoeman, 1970
  * Navicula claromontensis Héribaud in Héribaud & al., 1920
  * Navicula clathrata Østrup, 1895
  * Navicula clausa T.Marsson, 1900
  * Navicula clausii Grunow ex Kolkwitz & Marsson, 1908
  * Navicula clavata Manguin, 1964
  * Navicula claviculus Arnott ex Grunow in Van Heurck, 1880
  * Navicula clementioides Hustedt, 1944
  * Navicula clepsydra Meunier, 1910
  * Navicula clepsydra sensu Schmidt in Schmidt & al., 1876
  * Navicula clericii Frenguelli, 1923
  * Navicula clevei Lagerstedt, 1873
  * Navicula cleviana O'Meara, 1876
  * Navicula climacospheniae Booth, 1986
  * Navicula clipeiformis D.König, 1959
  * Navicula cloacina Lange-Bertalot & Bonik, 1976
  * Navicula cluthensis Gregory, 1854
  * Navicula cluthensoides Hustedt, 1966
  * Navicula clypeus Ehrenberg, 1840
  * Navicula coarctata Ehrenberg, 1842
  * Navicula coarctata Schmidt in Schmidt & al., 1875
  * Navicula coccinella Metzeltin, Lange-Bertalot & García-Rodríguez
  * Navicula cocconeiformis Schumann, 1863
  * Navicula cocconeis Ehrenberg, 1842
  * Navicula cocconioides J.R.Carter, 1964
  * Navicula coccus Schumann, 1863
  * Navicula cochlearis Eichwald, 1844
  * Navicula cocooneiformis
  * Navicula cocquytae Z. Levkov & T. Nakov in Levkov, Krstic, Metzeltin & Nakov, 2007
  * Navicula cocquytiae Z.Levkov & T.Nakov, 2007
  * Navicula coei Cholnoky, 1960
  * Navicula coerulea O'Meara, 1876
  * Navicula coerulescens Marsson, 1900
  * Navicula coffeiformis
  * Navicula colii Héribaud in Héribaud & al., 1920
  * Navicula collersonii D. Roberts & A. McMinn, 1999
  * Navicula collisiana O'Meara, 1876
  * Navicula columbiana Hustedt, 1966
  * Navicula columnaris Ehrenberg
  * Navicula comerei Héribaud in Héribaud & al., 1920
  * Navicula commixta Brebisson in Brebisson & Godey, 1835
  * Navicula commutabilis Hustedt
  * Navicula commutata Grunow ex A.Schmidt, 1876
  * Navicula comoides (Agardh) H.Peragallo
  * Navicula compacta Greville, 1857
  * Navicula compar Janisch in Schmidt & al., 1881
  * Navicula comperei Coste & Ricard, 1982
  * Navicula complanata (Grunow) Grunow, 1880
  * Navicula complanata Brun, 1896
  * Navicula complanatoides Hustedt, 1987
  * Navicula complanatula Hustedt, 1987
  * Navicula completa Hustedt, 1961
  * Navicula completaoides Foged, 1971
  * Navicula compositestriata Jasnitsky
  * Navicula compressicauda Schmidt, 1874
  * Navicula concamerata Hustedt in Schmidt & al., 1936
  * Navicula concava Harting, 1852
  * Navicula concava Patrick, 1945
  * Navicula concentrica Carter & Bailey-Watts, 1981
  * Navicula concinna Hustedt, 1944
  * Navicula concordia C.Riaux-Gobin & A.Witkowski, 2010
  * Navicula confecta A.Schmidt, 1875
  * Navicula confidens Cholnoky, 1963
  * Navicula confoederata Pantocsek, 1892
  * Navicula confusa Laslandes & Kociolek in Kociolek & al., 2014
  * Navicula confusa Manguin, 1949
  * Navicula congerana Hagelstein, 1939
  * Navicula congolensis Hustedt, 1949
  * Navicula congrua Janisch in Schmidt & al., 1881
  * Navicula conjugata Turpin, 1828
  * Navicula conjuncta Hustedt, 1966
  * Navicula consanguinea Cleve, 1895
  * Navicula conscensa Cholnoky, 1963
  * Navicula consentanea Hustedt, 1939
  * Navicula consimilis Schmidt, 1874
  * Navicula consimilis sensu Peragallo & Peragallo, 1897
  * Navicula consors Schmidt in Schmidt & al., 1876
  * Navicula conspersa Ehrenberg, 1854
  * Navicula conspersa Pantocsek, 1892
  * Navicula conspicua A.W.F.Schmidt, 1876
  * Navicula constantini Skabichevskii, 1952
  * Navicula constricta (Ehrenberg) Schütt, 1896
  * Navicula constricta Grunow, 1860
  * Navicula contempta Krasske, 1929
  * Navicula contendens Mann, 1925
  * Navicula contentaeformis Manguin, 1962
  * Navicula contermina Schmidt in Schmidt & al., 1876
  * Navicula contigua A.W.F.Schmidt
  * Navicula contorta Kitton Ms., Cleve, 1895
  * Navicula contortula Sovereign, 1963
  * Navicula contracta Ehrenberg, 1842
  * Navicula contracta Grunow in A. Schmidt, 1890
  * Navicula contraria R.M.Patrick, 1959
  * Navicula controversa Mann, 1925
  * Navicula conveniens Hustedt, 1952
  * Navicula conventus Heiden, 1900
  * Navicula convergens Patrick, 1959
  * Navicula convexa W.Smith, 1853
  * Navicula conveyi Van de Vijver, 2011
  * Navicula copiosa A.Schmidt, 1888
  * Navicula coquedensis Donkin, 1869
  * Navicula coraliana Metzeltin & Lange-Bertalot, 1998
  * Navicula corbieri Héribaud, 1903
  * Navicula cordillerae Frenguelli, 1942
  * Navicula cornubiensis Hendey, 1973
  * Navicula corpulenta Mann, 1925
  * Navicula correpta Schmidt in Schmidt & al., 1890
  * Navicula cortanensis Krasske, 1948
  * Navicula cortanensis sensu Cholnoky, 1957
  * Navicula corticela Manguin ex Kociolek & Reviers, 1996
  * Navicula corticola Manguin, 1962
  * Navicula corymbosa (Agardh) Cleve, 1896
  * Navicula cosmaria Brebisson ex Kutzing, 1849
  * Navicula costata Corda, 1835
  * Navicula costei Héribaud-Joseph
  * Navicula costuloides Skvortzow, 1937
  * Navicula cotiformis Grunow ex Cleve, 1881
  * Navicula cotschii Christjuk, 1930
  * Navicula crabro sensu Donkin, 1871
  * Navicula crabro sensu Greville, 1857
  * Navicula crabro sensu Schmidt in Schmidt & al., 1881
  * Navicula crabroniformis Grunow in Schmidt & al., 1875
  * Navicula crassa Gregory, 1855
  * Navicula crassirostris Grunow
  * Navicula crassula Naegeli in Kutzing, 1849
  * Navicula crassulexigua Reichardt, 1994
  * Navicula crateri Patrick, 1970
  * Navicula craticularis Frenguelli, 1933
  * Navicula craticuloides Li & Metzeltin, 2015
  * Navicula craveni Leuduger-Fortmorel, 1879
  * Navicula crebra Hustedt, 1964
  * Navicula creguti Héribaud & M.Peragallo
  * Navicula cremeri Van de Vijver & Zidarova, 2011
  * Navicula cremorme Hohn & Hellerman, 1863
  * Navicula cremorne M.H.Hohn & Hellerman, 1963
  * Navicula crepitacula Carter & Denny, 1982
  * Navicula creuzbergensis Krasske, 1927
  * Navicula creuzburgensis Krasske, 1927
  * Navicula criophila Manguin, 1957
  * Navicula criophila Manguin, 1960
  * Navicula criophiliforma A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
  * Navicula cristata Ehrenberg, 1854
  * Navicula cristata Peragallo, 1921
  * Navicula cristula Guermeur & Manguin, 1961
  * Navicula cristula Hohn, 1961
  * Navicula crocodili Cholnoky, 1962
  * Navicula cronullensis Wood, 1963
  * Navicula crucialis Frenguelli, 1929
  * Navicula cruciata Cleve, 1881
  * Navicula cruciata Leuduger-Fortmorel, 1879
  * Navicula cruciculoides C.Brockmann, 1950
  * Navicula crucifera Grunow, 1876
  * Navicula crucifera O'Meara, 1876
  * Navicula crucifix Tempère & Brun in Brun & Tempère, 1889
  * Navicula crucigeriformis Hustedt, 1961
  * Navicula crucigeroides Hustedt, 1961
  * Navicula crucigerum Wm Smith Van Heurck, 1896
  * Navicula crucitina H. Peragallo in Tempère & Peragallo, 1909
  * Navicula crux Ehrenberg, 1838
  * Navicula cruxmeridionalis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
  * Navicula cryophila Manguin, 1957
  * Navicula cryophiliforma Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
  * Navicula cryptocefalsa Lange-Bertalot, 1993
  * Navicula cryptocephala Kützing, 1844
  * Navicula cryptocephala sensu W. Smith, 1853
  * Navicula cryptocephaloides Hustedt, 1937
  * Navicula cryptofallax Lange-Bertalot & Hofmann, 1993
  * Navicula cryptogaster Lowe, 1972
  * Navicula cryptolyra Brockmann, 1950
  * Navicula cryptorrhynchus Cholnoky, 1963
  * Navicula cryptostriata Salah, 1953
  * Navicula cryptotenella Lange-Bertalot, 1985
  * Navicula cryptotenelloides Lange-Bertalot, 1993
  * Navicula crystallina Hustedt, 1961
  * Navicula csaszkaae Pantocsek, 1903
  * Navicula cubitus Tempère & Brun in Brun & Tempère, 1889
  * Navicula cucullus Pantocsek, 1908
  * Navicula cumbriensis Haworth, 1988
  * Navicula cummerowii Kalbe, 1973
  * Navicula cumvibia Hohn & Hellerman, 1966
  * Navicula cunctans Schoeman, 1973
  * Navicula cuneata O'Meara, 1876
  * Navicula cuneatostriolata Kulikovskiy Lange-Bertalot & Metzeltin, 2012
  * Navicula cuneicephala D.G.Mann, 1924
  * Navicula cuneoquadrata Brun ex Tempère & Peragallo, 1912
  * Navicula cunoniae Cholnoky, 1963
  * Navicula curiosa Cholnoky, 1965
  * Navicula curiosa Hustedt, 1955
  * Navicula curta Hustedt, 1937
  * Navicula curtestria Pantocsek, 1892
  * Navicula curtestriata Pantocsek, 1889
  * Navicula curtestriata Østrup, 1918
  * Navicula curtisterna Lange-Bertalot, 2001
  * Navicula curvilineata Mann, 1907
  * Navicula curvinervia Grunow in Cleve, 1878
  * Navicula curvipunctata Leuduger-Fortmorel, 1892
  * Navicula curviraphis Cleve-Euler, 1953
  * Navicula curvula Ehrenberg, 1838
  * Navicula curvula sensu Kutzing, 1844
  * Navicula cuspidata Otto Müller, 1899
  * Navicula cuspidata sensu Frenguelli, 1924
  * Navicula cuspidata sensu Schmidt in Schmidt & al., 1897
  * Navicula cuspis O'Meara, 1876
  * Navicula cuvella Carter & Denny, 1982
  * Navicula cyclophora Castracane, 1886
  * Navicula cyclops Mann, 1925
  * Navicula cymatopleura West & G.S.West, 1911
  * Navicula cymbelliformis Cholnoky, 1954
  * Navicula cymbelloides Hustedt in Schmidt & al., 1934
  * Navicula cymbelloides Jousé, 1952
  * Navicula cymbula Donkin, 1869
  * Navicula cyprinus (Ehrenberg) Kützing
  * Navicula cyprinus (W. Smith) Boyer, 1916
  * Navicula czekejazensis Pantocsek, 1889
  * Navicula dactylus sensu Tempère & Peragallo, 1911
  * Navicula daczii Gaponov, 1915
  * Navicula dahomensis Hustedt, 1910
  * Navicula dahurica Skabichevskií
  * Navicula dahurica Skvortzov, 1937
  * Navicula dailyi Reimer, 1961
  * Navicula dakariana Guermeur, 1954
  * Navicula dalmatica Grunow
  * Navicula damasii Hustedt, 1962
  * Navicula damongensis Foged, 1966
  * Navicula danderiana Guermeur, 1954
  * Navicula danensis Stiles, 1918
  * Navicula daochengensis W. Zhang, Chudaev & T. Wang in Wang & al., 2020
  * Navicula dapaliformis Hustedt, 1966
  * Navicula dapalis Frenguelli, 1941
  * Navicula dapaloides Frenguelli, 1953
  * Navicula dartevellei Kufferath, 1957
  * Navicula darwiniana Seddon & Witkowski, 2011
  * Navicula davidsoniana O'Meara, 1876
  * Navicula de-toniana Gutwinski, 1892
  * Navicula dealpina Lange-Bertalot, 1993
  * Navicula debegenica Cholnoky, 1954
  * Navicula debilis Pantocsek, 1889
  * Navicula debilissima Grunow, 1884
  * Navicula debilitata M. Peragallo in Héribaud & al., 1920
  * Navicula deblockii Héribaud in Héribaud & al., 1920
  * Navicula debyi Pantocsek
  * Navicula decens Pantocsek, 1913
  * Navicula dechambrei Bourrelly & Manguin, 1950
  * Navicula decipiens Castracane, 1886
  * Navicula decipiens Cleve, 1896
  * Navicula decipiens Meister, 1932
  * Navicula decipiens O'Meara, 1876
  * Navicula decissa Carter, 1966
  * Navicula declinata Hustedt, 1966
  * Navicula declivis Hustedt, 1934
  * Navicula decloitrei Guermeur, 1954
  * Navicula decora Grove & Sturt, 1887
  * Navicula decrescens Cleve-Euler, 1948
  * Navicula decrescens Héribaud-Joseph, 1903
  * Navicula decumana Pantocsek, 1892
  * Navicula decurrens Cleve, 1883
  * Navicula decurrens sensu Grunow in Schmidt & al., 1876
  * Navicula decussepunctata Simonsen, 1960
  * Navicula decussis Østrup, 1910
  * Navicula deficilis
  * Navicula definita Grove & Sturt
  * Navicula defluens Hustedt, 1944
  * Navicula degenii Pantocsek, 1902
  * Navicula dehissa Giffen, 1973
  * Navicula delastriata Hohn & Hellerman, 1966
  * Navicula delata Schmidt, 1874
  * Navicula delawarensis Grunow ex Cleve, 1893
  * Navicula delecta Meister, 1937
  * Navicula deliberata Hustedt, 1961
  * Navicula delicata Frenguelli, 1926
  * Navicula delicatilineolata H.Kobayasi & S.Mayama, 2003
  * Navicula delicatissima Hustedt in Schmidt & al., 1934
  * Navicula delicatula Skvortzov, 1937
  * Navicula delicatula W. Smith Collection, 1850
  * Navicula deliginensis O'Meara, 1876
  * Navicula delognei Van Heurck, 1880
  * Navicula delpiroui M. Peragallo in Héribaud & al., 1920
  * Navicula delta Cleve, 1893
  * Navicula deltaica D.E. Kellogg, M. Stuiver, T.B. Kellogg & G.H. Denton, 1980
  * Navicula deltoides Hustedt, 1966
  * Navicula demerara Grunow, 1893
  * Navicula demerarae Ehrenberg, 1845
  * Navicula demeraroides Hustedt, 1966
  * Navicula demissa Hustedt, 1945
  * Navicula demta Schmidt in Schmidt & al., 1881
  * Navicula denizotii Manguin, 1964
  * Navicula densa Hustedt
  * Navicula densepunctata Hustedt, 1962
  * Navicula densilineolata (Lange-Bertalot) Lange-Bertalot, 1993
  * Navicula densuensis Foged, 1966
  * Navicula denticula
  * Navicula denticulata O'Meara, 1867
  * Navicula denticuloides Hustedt in Schmidt & al., 1934
  * Navicula denudata Pantocsek, 1902
  * Navicula depauxii M. Peragallo, 1921
  * Navicula depressa Cleve, 1891
  * Navicula dermochelycola Witkowski, Kociolek & Riaux-Gobin in Riaux-Gobin & al., 2020
  * Navicula descripta Hustedt, 1943
  * Navicula deserti Forti, 1928
  * Navicula destituta Hustedt, 1966
  * Navicula destitutiodes Hustedt, 1966
  * Navicula destricta Hustedt, 1942
  * Navicula detenta Hustedt, 1943
  * Navicula detersa Messjatzew, 1922
  * Navicula detoniana Gutwinski, 1890
  * Navicula dewittiana Kain & Schultze, 1889
  * Navicula diabolica Geissler & Gerloff, 1963
  * Navicula diaculus Schumann
  * Navicula diagonalis Bailey, 1851
  * Navicula diahotana Maillard, 1978
  * Navicula diaphana Ehrenberg, 1845
  * Navicula diaphanea Manguin in Bourrelly & Manguin, 1952
  * Navicula dibola Hohn, 1961
  * Navicula dibrinatemniskovae R.Zidarova & B.Van de Vijver, 2011
  * Navicula dicephala Ehrenberg, 1838
  * Navicula dicephala sensu H.L. Smith, 1874-1879
  * Navicula dicephaloides Fusey, 1948
  * Navicula dicurvata O'Meara, 1872
  * Navicula didyma Schmidt in Schmidt & al., 1881
  * Navicula didyma sensu Lagerstedt, 1876
  * Navicula didyma sensu Neupauer, 1867
  * Navicula didyma sensu Schmidt in Schmidt & al., 1881
  * Navicula didymus Ehrenberg, 1840
  * Navicula diengensis VanLand., 1975
  * Navicula differta Pantocsek, 1902
  * Navicula difficillima Hustedt, 1950
  * Navicula difficillimoides Hustedt, 1957
  * Navicula diffluens Schmidt in Schmidt & al., 1874
  * Navicula difformis Eichwald, 1847
  * Navicula diffusa A.W.F.Schmidt
  * Navicula diffusa H. Peragallo, 1888
  * Navicula dificilis Pantocsek, 1892
  * Navicula digitoconvergens Lange-Bertalot, 1999
  * Navicula digitoradiata (Gregory) Ralfs, 1861
  * Navicula digitoradiata sensu Cleve-Euler, 1922
  * Navicula digitulus Hustedt, 1943
  * Navicula digna Hustedt, 1957
  * Navicula digrediens Schmidt in Schmidt & al., 1881
  * Navicula dilatata Ehrenberg, 1843
  * Navicula dilatata sensu Schmidt in Schmidt & al., 1877
  * Navicula dilucida Hustedt, 1939
  * Navicula dimidiata A.Mayer, 1919
  * Navicula dimidiata Dujardin, 1842
  * Navicula diploneiformis Hustedt, 1957
  * Navicula diploneoides Hustedt, 1936
  * Navicula diplosticta Grunow in Schmidt & al., 1875
  * Navicula dirhynchus Ehrenberg, 1843
  * Navicula dirhynchus sensu Donkin, 1871
  * Navicula dirrhombus Schmidt in Schmidt & al., 1875
  * Navicula discerneda Cleve-Euler, 1932
  * Navicula discernenda Pantocsek, 1889
  * Navicula disciformis Peticolas in Vorce, 1889
  * Navicula disclusa Hustedt, 1964
  * Navicula discrepans Schmidt in Schmidt & al., 1875
  * Navicula discreta Hustedt, 1964
  * Navicula disculus Schumann, 1862
  * Navicula diserta Hustedt, 1939
  * Navicula disertoides Cholnoky, 1968
  * Navicula disjuncta Hustedt, 1930
  * Navicula disjunctoides Manguin ex Kociolek & Reviers, 1996
  * Navicula dismutica Hustedt, 1966
  * Navicula dispar Schumann, 1862
  * Navicula disparata Hustedt, 1942
  * Navicula dispensata Hustedt & Manguin
  * Navicula dispersa Grove & Sturt, 1887
  * Navicula dispersa J.R.Carter, 1964
  * Navicula dispersepunctata Hustedt, 1952
  * Navicula dispersepunctata Skabichevskii, 1936
  * Navicula dispersepunctulata Hustedt, 1966
  * Navicula disposita Hustedt, 1964
  * Navicula disputans R.M.Patrick, 1959
  * Navicula dissimilis W. Smith, 1857
  * Navicula dissipata Hustedt, 1944
  * Navicula dissipata Salah
  * Navicula dissociata E.Reichardt, 1984
  * Navicula dissuta Giffen, 1966
  * Navicula distantepunctata Simonsen, 1974
  * Navicula distauridium Ehrenberg, 1841
  * Navicula distenta Schmidt in Schmidt & al., 1874
  * Navicula distenta Schumann
  * Navicula disticha Schmidt in Schmidt & al., 1897
  * Navicula distincta G.S. West, 1907
  * Navicula distinctapunctulata Gaud, 1974
  * Navicula distinctastriata Hohn & Hellerman, 1963
  * Navicula distoma Grunow
  * Navicula dithmarsica König ex Hustedt, 1964
  * Navicula diuturna Cholnoky, 1962
  * Navicula diuturnoides Archibald, 1966
  * Navicula divaricata Hustedt, 1942
  * Navicula divaricata Manguin in Bourrelly & Manguin, 1952
  * Navicula divergens (W.Smith) Grunow, 1860
  * Navicula divergentissima Grunow, 1879
  * Navicula diversa Greville, 1863
  * Navicula diversestriata Jasmitsky, 1936
  * Navicula diversicostata Brun, 1894
  * Navicula diversipunctata Hustedt, 1944
  * Navicula diversistriata Hustedt, 1955
  * Navicula diversistriata sensu Foged, 1962
  * Navicula diverta Carter, 1966
  * Navicula dobrinatemniskovae Zidarova & Van de Vijver, 2011
  * Navicula doczii Pantocsek, 1889
  * Navicula dodowaensis Foged, 1966
  * Navicula doehleri Lange-Bertalot, 2001
  * Navicula doellojuradoi Frenguelli, 1924
  * Navicula doeringii Frenguelli
  * Navicula doljensis Pantocsek, 1886
  * Navicula dolomitica W.Bock, 1970
  * Navicula dolosa Giffen, 1984
  * Navicula dolosa Manguin, 1964
  * Navicula domiciliensis E.Reichardt, 2012
  * Navicula donkinia O'Meara, 1875
  * Navicula donkinii A.Schmidt, 1874
  * Navicula donkinii Carruthers in J.E. Gray, 1864
  * Navicula dorenbergi Reichelt in Heiden in A. Schmidt, 1903
  * Navicula dorenbergii Reichelt, 1899 (1900)
  * Navicula dorogostaiskyi Østrup, 1908
  * Navicula dosseti Azpeitia, 1911
  * Navicula drouetiana Patrick, 1944
  * Navicula dubia sensu Schmidt in Schmidt & al., 1877
  * Navicula dubiosa de Wildeman, 1897
  * Navicula dubitanda Hustedt & Kolbe, 1987 †
  * Navicula dubitata Héribaud, 1903
  * Navicula dubravicensis Grunow, 1882
  * Navicula dugaensis Foged, 1966
  * Navicula dulcioides Foged, 1981
  * Navicula dulcis Foged, 1971
  * Navicula dulcis Krasske, 1939
  * Navicula dulcis Patrick, 1959
  * Navicula dumontiae Baardseth & Taasen, 1973
  * Navicula dunstonii Salah, 1953
  * Navicula duomedia Patrick, 1959
  * Navicula duplex Nygaard, 1956
  * Navicula duplex Pantocsek, 1892
  * Navicula duplicata Ehrenberg, 1843
  * Navicula duplocapitata Hustedt, 1966
  * Navicula durandii sensu Mann, 1925
  * Navicula durrandii Kitton, 1885
  * Navicula dutoitiana Cholnoky, 1959
  * Navicula dvorachekii Ehrlich, 1978
  * Navicula dystrophica Patrick, 1959
  * Navicula eastwoodi Hanna & Grant, 1926
  * Navicula ebor M.H.Hohn & Hellerman, 1963
  * Navicula eburnea Zanon, 1941
  * Navicula ectoris Van de Vijver, 2002
  * Navicula effrenata Krasske, 1949
  * Navicula egena Schmidt in Schmidt & al., 1890
  * Navicula egeria Pantocsek, 1892
  * Navicula egyptiaca Greville, 1866
  * Navicula ehrenbergii Kützing, 1844
  * Navicula eichhoriaephila Manguin, 1962
  * Navicula eichhorniaephila E.Manguin ex Kociolek & Reviers, 1996
  * Navicula eidrigeana J.R.Carter, 1979
  * Navicula eidrigiana J.R.Carter, 1979
  * Navicula ekholmensis Foged, 1964
  * Navicula elaborata Hustedt in Schmidt & al., 1934
  * Navicula elaphros M.H.Hohn & Hellerman, 1963
  * Navicula elata H.P.Gandhi, 1970
  * Navicula elata Leuduger-Fortmorel, 1879
  * Navicula electa Hustedt, 1966
  * Navicula electrolytifuga H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
  * Navicula elegans sensu Grunow, 1860
  * Navicula elegantissima M. Peragallo in Tempère & Peragallo, 1908
  * Navicula elegantissima Meister, 1935
  * Navicula elegantula Grunow, 1860
  * Navicula elenkinii Goriatscheva, 1963
  * Navicula elephantis Cholnoky, 1964
  * Navicula elesdiana Pantocsek, 1886
  * Navicula elevata Kobayashi, 1968
  * Navicula elisabethae Pantocsek, 1909
  * Navicula ellips Harting, 1852
  * Navicula ellipsis Smith ex Norman, 1860
  * Navicula elliptica Ehrenberg, 1844
  * Navicula elliptica W.Smith, 1853
  * Navicula elmorei Patrick, 1966
  * Navicula elongata Ehrenberg, 1856
  * Navicula elongata Grunow in Schmidt, 1874
  * Navicula elongata Grunow, 1875
  * Navicula elongata Poretzky, 1969
  * Navicula elongatula Pantocsek, 1889
  * Navicula elsoniana Patrick & Freese, 1861
  * Navicula emarginata Ehrenberg, 1849
  * Navicula emendata Hustedt in Schmidt & al., 1934
  * Navicula endophytica Hasle, 1968
  * Navicula engelbrechtii Cholnoky, 1955
  * Navicula englertiae A.Witkowski, Lange-Bertalot & J.P.Kociolek, 2009
  * Navicula enigmatica Germain, 1980
  * Navicula ennediensis Compère, 1970
  * Navicula entoleia P.Cleve
  * Navicula entomon Donkin, 1840
  * Navicula entomon sensu Grunow in Schmidt & al., 1875
  * Navicula entzii Pantocsek, 1905
  * Navicula enucleata Hustedt, 1945
  * Navicula eocaenica Schrader, 1969
  * Navicula eomenisculus Benson & Kociolek †
  * Navicula eponka Hohn, 1961
  * Navicula epsilon Cleve, 1893
  * Navicula equiornata Manguin in Bourrelly & Manguin, 1954
  * Navicula erdmannensis Foged, 1964
  * Navicula ergadensis (Gregory) Ralfs, 1861
  * Navicula erifuga Lange-Bertalot, 1985
  * Navicula ermanii Lupikina, 1984
  * Navicula erosa Cleve
  * Navicula erythraea Grunow in Schmidt & al., 1875
  * Navicula esamangensis Foged, 1966
  * Navicula escorialis R.Simonsen, 1959
  * Navicula esoculus Schumann
  * Navicula esox sensu H.L. Smith, 1874-1879
  * Navicula esox sensu Lewis, 1862
  * Navicula esromensis Foged, 1968
  * Navicula essexii M. Peragallo in Tempère & Peragallo, 1913
  * Navicula eta Cleve, 1893
  * Navicula eugenia A.Schmidt, 1874
  * Navicula eugeniae Cleve, 1881
  * Navicula eumontana Messikommer, 1948
  * Navicula eunotiiformis Mereschkowsky, 1902
  * Navicula europaea Cleve-Euler, 1953
  * Navicula euryale Ehrenberg, 1854
  * Navicula eurycephala Rabenhorst, 1853
  * Navicula eurysoma Ehrenberg, 1838 (1839)
  * Navicula euthimius Stone in McLaughlin & Stone, 1986
  * Navicula evanida Hustedt, 1942
  * Navicula evexa Sovereign, 1963
  * Navicula evulsa Giffen, 1967
  * Navicula evulsa Østrup, 1895
  * Navicula exasperans Kociolek & Reviers, 1996
  * Navicula excavata sensu Cleve & Moller, 1878
  * Navicula excellens Carlson, 1913
  * Navicula excelsa Krasske, 1925
  * Navicula excentrica Grunow, 1860
  * Navicula excepta VanLandingham, 1975
  * Navicula exemta A. Schmidt, 1874
  * Navicula exemta A.Schmidt
  * Navicula exigua Dujardin, 1842
  * Navicula exigua Gregory, 1854
  * Navicula exigua Pantocsek, 1902
  * Navicula exigua sensu Pantocsek, 1892
  * Navicula exiguiformis Hustedt, 1944
  * Navicula exiguoides Hustedt, 1955
  * Navicula exilior Østrup, 1918 (1920)
  * Navicula exilis Grunow
  * Navicula exilis Grunow, 1880
  * Navicula exilis Kützing, 1844
  * Navicula exilissima Grunow, 1880
  * Navicula exiloides H.Kobayasi & S.Mayama, 2003
  * Navicula eximia (Grunow) Grunow, 1897
  * Navicula expecta S.L.VanLandingham, 1975 †
  * Navicula expectilis Pantocsek
  * Navicula expedita Schmidt in Schmidt & al., 1881
  * Navicula expeditionis Frenguelli, 1924
  * Navicula explanata Hustedt, 1948
  * Navicula expleta A.Schmidt, 1874
  * Navicula expleta O'Meara, 1876
  * Navicula explicata Hustedt, 1964
  * Navicula explicatoides Hustedt, 1964
  * Navicula explorata Hustedt, 1966
  * Navicula exsul A.Schmidt, 1874
  * Navicula extensa Ralfs in Pritchard, 1861
  * Navicula extenta W. Smith
  * Navicula eymei Coste & Ricard, 1982
  * Navicula fabiformis A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
  * Navicula faceta Hustedt, 1949
  * Navicula facilis Krasske, 1949
  * Navicula falaisiensis sensu Boye Petersen, 1915
  * Navicula falax Pantocsek, 1903
  * Navicula falklandiae Ehrenberg, 1854
  * Navicula fallax Cleve, 1894
  * Navicula falsalyra Hendey, 1970
  * Navicula famelica Castracane, 1889
  * Navicula famintzinii Mereschkowsky, 1902
  * Navicula faoensis Pankow & Huq, 1979
  * Navicula farakulumensis Foged, 1959
  * Navicula farcimen Østrup, 1904
  * Navicula farta Hustedt, 1966
  * Navicula fastuosa Ehrenberg, 1840
  * Navicula fatigans Zimmermann, 1918
  * Navicula fauta Hustedt, 1954
  * Navicula favus Salah, 1953
  * Navicula fawumangensis Foged, 1966
  * Navicula febigeri Cleve, 1881
  * Navicula fenestrella Hustedt, 1955
  * Navicula fennoscandica Cleve-Euler in Backman & Cleve-Euler, 1922
  * Navicula fenzlii Grunow, 1863
  * Navicula ferdinandikoburg Pantocsek, 1912
  * Navicula fernandae D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
  * Navicula fernandesii Moura, 1963
  * Navicula ferrazae Cholnoky, 1968
  * Navicula festinans Bory, 1824
  * Navicula festiva Krasske, 1925
  * Navicula feuerborni Hustedt, 1937
  * Navicula feuerbornii Hustedt
  * Navicula filarszkyana Pantocsek & Greguss in Greguss, 1913
  * Navicula filarszkyi Pantocsek, 1903
  * Navicula filholi Soubeiran, 1858
  * Navicula filiformis Pantocsek, 1905
  * Navicula finitima Hustedt, 1949
  * Navicula finitima Janisch, 1888
  * Navicula finmarchica (Cleve & Grunow) Cleve, 1895
  * Navicula firma Donkin, 1871
  * Navicula fischeri A.W.F.Schmidt, 1875
  * Navicula fistula A.Schmidt, 1874
  * Navicula flabellata Meister, 1932
  * Navicula flagellifera Hustedt, 1939
  * Navicula flahaulti Lauby, 1910
  * Navicula flamma Schmidt in Schmidt & al., 1876
  * Navicula flammarionensis Van Landingham, 1975
  * Navicula flammula Schmidt in Schmidt & al., 1876
  * Navicula flanatica Grunow, 1860
  * Navicula flanatica Schmidt in Schmidt in Schmidt & al., 1876
  * Navicula flattii Pantocsek, 1892
  * Navicula flavasinensis Moghadam, 1969
  * Navicula flavasinus Moghadam, 1969
  * Navicula flebilis Cholnoky, 1963
  * Navicula flexuosa Ehrenberg, 1832
  * Navicula florentina Grunow, 1877
  * Navicula floridana Cleve, 1881
  * Navicula florinae Møller, 1950
  * Navicula flotowii Grunow, 1880
  * Navicula fluens Hustedt
  * Navicula fluitans Brun
  * Navicula fluminensis
  * Navicula fluminisirtysch Tschistjakov, 1959
  * Navicula fluminitica Camburn, 1978
  * Navicula fluviae-jenisseyi Skvortzow, 1971
  * Navicula fluviatilis Hustedt, 1957
  * Navicula foederata Grunow ex Moller, 1881
  * Navicula foerarmensis M. Peragallo, 1903
  * Navicula fogedii Schoeman in Schoeman & Meaton, 1982
  * Navicula foliola Tempère & Brun in Brun & Tempère, 1889
  * Navicula folium Ehrenberg, 1840
  * Navicula follis Ehrenberg, 1838 †
  * Navicula fontana J.Zelazna-Wieczorek & Lange-Bertalot, 2011
  * Navicula fontana Żelazna-Wieczorek, Lange-Bertalot, Olszyński & Witkowski, 2020
  * Navicula fontelli Cleve-Euler, 1934
  * Navicula fonticola Grunow, 1880
  * Navicula formenterae Cleve, 1895
  * Navicula formicata Krasske, 1939
  * Navicula formicina Grunow in Cleve, 1878
  * Navicula fortii Pantocsek, 1908
  * Navicula fortis (Gregory) Ralfs ex Pritchard, 1861
  * Navicula fortis sensu Schmidt in Schmidt & al., 1876
  * Navicula fortunata Leuduger-Fortmorel, 1879
  * Navicula fossaloides Hustedt, 1957
  * Navicula fossilioides Manguin ex Kociolek & Reviers, 1996
  * Navicula fossilis Ehrenberg, 1854
  * Navicula foveana Peragallo & Peragallo, 1897-1908
  * Navicula fracta Hustedt, 1987
  * Navicula fragilis (Greville) Heiberg
  * Navicula fragilis Skvortzow & Meyer, 1928
  * Navicula franciscae O'Meara, 1876
  * Navicula franconiana (Reinsch; Rabenhorst) M. Peragallo, 1903
  * Navicula frasnensis Fusey, 1848
  * Navicula fraudulenta A.Schmidt, 1881
  * Navicula freesei Patrick & Freese, 1961
  * Navicula frenguelli Reinhold, 1937
  * Navicula frequens Van Heurck, 1909
  * Navicula frickei Pantocsek, 1902
  * Navicula frickei Van Heurck, 1909
  * Navicula friesneri Reimer, 1961
  * Navicula frigida Grunow, 1880
  * Navicula frigida Manguin, 1957
  * Navicula frigida Manguin, 1960
  * Navicula frigida sensu E. Jorgensen, 1905
  * Navicula frigidicola D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
  * Navicula frisiae Brockmann, 1914
  * Navicula friska Carter, 1966
  * Navicula fritschii J.W.G.Lund, 1946
  * Navicula fritschii sensu Foged, 1958
  * Navicula fromenterae Cleve, 1881
  * Navicula frugalis Hustedt, 1957
  * Navicula frustuliaeformis Cholnoky, 1960
  * Navicula frustuloides Patrick, 1936
  * Navicula frustulum Hustedt, 1945
  * Navicula fuchsii Pantocsek, 1889
  * Navicula fucicola Taasen, 1975
  * Navicula fuegiana Frenguelli
  * Navicula fuenzalidae Frenguelli, 1938
  * Navicula fujianensis Chin & Cheng, 1979
  * Navicula fukiensis Skvortzow, 1929
  * Navicula fulva Brebisson in Brebisson & Godey, 1835
  * Navicula funiculata Mann, 1925
  * Navicula furtiva E.Manguin, 1952
  * Navicula fusca Donkin, 1870
  * Navicula fuscata Schumann, 1867
  * Navicula fuscus Bory, 1824
  * Navicula fusidium Ehrenberg, 1843
  * Navicula fusiformis Ehrenberg, 1830
  * Navicula fusiformis sensu Meunier, 1910
  * Navicula fusioides Grunow, 1880
  * Navicula fusoides Grunow, 1880
  * Navicula fusticulus Østrup, 1910
  * Navicula fustis Østrup, 1918 (1920)
  * Navicula fusus (Ehrenberg) De Toni, 1891
  * Navicula fusus (O.F. Müller) Bory, 1827
  * Navicula futilis Schmidt in Schmidt & al., 1875
  * Navicula gaillonii Bory de Saint-Vincent, 1824
  * Navicula gainii M. Peragallo, 1921
  * Navicula galapagensis
  * Navicula galapagoensis Seddon & Witkowski, 2011
  * Navicula galea Brun, 1891
  * Navicula galikii (Pantocsek) Cleve, 1889
  * Navicula gallapagensis Cleve
  * Navicula gallica (W.Smith) Lagerstedt, 1873
  * Navicula gallica Manguin, 1943
  * Navicula galvagensis O'Meara, 1876
  * Navicula gamma Cleve
  * Navicula gandhii Meister, 1932
  * Navicula gandrupi (Petersen) Krasske, 1938
  * Navicula garkeana (Grunow) Cleve, 1894
  * Navicula gasilidei Héribaud in Héribaud & al., 1920
  * Navicula gastriformis Hustedt in Schmidt & al., 1934
  * Navicula gastroides Gregory, 1855
  * Navicula gastroides Harting, 1852
  * Navicula gastrum sensu Pantocsek, 1902
  * Navicula gaufinii Moghadam, 1969
  * Navicula gaussii (Heiden) Hustedt
  * Navicula gauthieri Amossé
  * Navicula gawaniensis Gasse, 1986
  * Navicula gebhardi Krasske, 1938
  * Navicula geinitzi Bünte
  * Navicula geisslerae R. Jahn, 1992
  * Navicula geitleri Guermeur & Manguin, 1953
  * Navicula geitleri Hustedt, 1937
  * Navicula gelida Cleve, 1883
  * Navicula gelida Grunow, 1884
  * Navicula gemina A. Schmidt, 1875
  * Navicula gemina Ehrenberg, 1840
  * Navicula geminata Turpin, 1828
  * Navicula gemma Ehrenberg, 1840
  * Navicula gemmata Greville, 1859
  * Navicula gemmatula Cleve, 1885
  * Navicula gemmatula Grunow
  * Navicula gemmifera R.Simonsen, 1960
  * Navicula gendrei Héribaud-Joseph
  * Navicula genestoermeri A.Witkowski, H-Lange-Bertalot & J.P.Kociolek, 2009
  * Navicula geniculata Germain, 1937
  * Navicula genifera Schmidt in Schmidt & al., 1874
  * Navicula genovefae Fusey, 1951
  * Navicula genuflexa Kützing, 1844
  * Navicula genustriata Hustedt, 1942
  * Navicula gerloffii Schimanski, 1978
  * Navicula germainii Wallace, 1960
  * Navicula germanopolonica Witkowski & Lange-Bertalot, 1993
  * Navicula geronimensis M. Potapova in Potapova, M. & Charles, D.F., 2004
  * Navicula gianfranchii Zanon, 1929
  * Navicula gibba Ehrenberg, 1830
  * Navicula gibba sensu Donkin, 1872
  * Navicula gibba sensu Van Heurck, 1885
  * Navicula giebelii Schmidt, 1874
  * Navicula gieniaflorentina A.Witkowski, Lange-Bertalot, A.Brzeziska & J.P.Kociolek, 2009
  * Navicula gieskesii Cholnoky, 1963
  * Navicula giffeniana Foged, 1975
  * Navicula gigantea Hustedt, 1961
  * Navicula gigantorum Cholnoky, 1960
  * Navicula gigas Castracane, 1866
  * Navicula gigas sensu Schmidt in Schmidt & al., 1876
  * Navicula gigas sensu Tempère & Peragallo, 1911
  * Navicula gilva Archibald, 1971
  * Navicula giovannettiae Guermeur, 1954
  * Navicula giriodi Lauby, 1910
  * Navicula girondica Konig, 1959
  * Navicula glaberrima West & G.S.West, 1911
  * Navicula glabra Østrup, 1918
  * Navicula glabrissima Mann, 1925
  * Navicula glabriuscula Hustedt
  * Navicula glaciei Van Heurck, 1909
  * Navicula glangeaudi Lauby, 1910
  * Navicula glans Ehrenberg, 1838
  * Navicula globiceps Grunow in Cleve & Grunow, 1880
  * Navicula globiceps Lagerstedt, 1873
  * Navicula globiceps W. & G.S. West, 1911
  * Navicula globifera O'Meara, 1876
  * Navicula globosa Meister, 1934
  * Navicula globosaoides Foged, 1970
  * Navicula globulifera Hustedt, 1927
  * Navicula globuliferiformis Lange-Bertalot, 1993
  * Navicula glomus J.R.Carter, 1981
  * Navicula gloriosa Brun
  * Navicula gloriosa Cleve-Euler, 1953
  * Navicula godfroyi M. Peragallo, 1921
  * Navicula goersii Bahls, 1983
  * Navicula goesii Cleve, 1878
  * Navicula gogorevii Chudaev, Glushchenko, Kulikovskiy & Kociolek in Kulikovskiy & al., 2020
  * Navicula gololobovae Chudaev, 2016
  * Navicula gomontiana Héribaud, 1902
  * Navicula gomphonemacea Grunow in Van Heurck, 1880
  * Navicula gomphonemacea Østrup in Héribaud & al., 1920
  * Navicula gomphonemoides Østrup, 1910
  * Navicula gondwana Lange-Bertalot, 1993
  * Navicula gongii Metzeltin & Li, 2015
  * Navicula gonzalvesiana Gandhi, 1955
  * Navicula gorjanovicii Pantocsek, 1886
  * Navicula gotlandica
  * Navicula gottlandica Grunow, 1880
  * Navicula goulainensis Amossé, 1975
  * Navicula gourdonii M. Peragallo, 1921
  * Navicula gouwsii Cholnoky, 1953
  * Navicula gracilis Lauby, 1910 †
  * Navicula graciloides A.Mayer, 1919
  * Navicula gradata Hustedt in Schmidt & al., 1936
  * Navicula gradatoides Cholnoky, 1966
  * Navicula graeffii Grunow ex A.Schmidt, 1875
  * Navicula gralana Carter & Denny, 1982
  * Navicula grammatostoma Ehrenberg, 1841 †
  * Navicula grammitis Bory, 1831
  * Navicula grammitis Turpin, 1827
  * Navicula granii Pantocsek, 1908
  * Navicula granoryza Giffen, 1966
  * Navicula granulata Bailey, 1854
  * Navicula granulata Brébisson in Gregory, 1855
  * Navicula granulata Ehrenberg, 1836
  * Navicula granulata sensu Schmidt in Schmidt & al., 1875
  * Navicula granulifera Skvortzow, 1937
  * Navicula granum Schumann, 1867
  * Navicula granumavenae Schumann, 1867
  * Navicula grasmueckii Lange-Bertalot, 1993
  * Navicula grata Pantocsek, 1889
  * Navicula gratissima Hustedt, 1944
  * Navicula gravistriata R.M.Patrick, 1959
  * Navicula gregalis Cholnoky, 1963
  * Navicula gregaria Donkin, 1861
  * Navicula gregarioides Cholnoky
  * Navicula gregoriana Greville, 1857
  * Navicula gregoriana O'Meara, 1874
  * Navicula gregorii O'Meara, 1875
  * Navicula gregorii Ralfs ex Pritchard, 1861
  * Navicula gretharum Simonsen, 1974
  * Navicula grevilleana Hendey, 1964
  * Navicula grevillei (Agardh) Heiberg, 1863
  * Navicula grevillei Donkin, 1871
  * Navicula grevilleoides Hustedt, 1962
  * Navicula griffithii M. Peragallo in Tempère & Peragallo, 1909
  * Navicula grimmii Krasske
  * Navicula grimmioides Cholnoky, 1963
  * Navicula grippii Simonsen., 1966
  * Navicula groenlandica Cleve, 1881
  * Navicula groschopfi Hustedt, 1939
  * Navicula groschopfii Hustedt, 1939
  * Navicula grossepunctata Hustedt, 1944
  * Navicula grovei Cleve, 1893
  * Navicula grovei Meister, 1932
  * Navicula groveoides Hustedt, 1966
  * Navicula grudeensis Foged, 1970
  * Navicula gruendleri (Cleve & Grunow) Cleve
  * Navicula gruendleri Schmidt, 1873
  * Navicula grundleri
  * Navicula grundleriana O'Meara, 1876
  * Navicula grundtvigii Foged, 1966
  * Navicula grunowiana De Toni, 1891
  * Navicula grunowii O'Meara, 1876
  * Navicula grunowii Rabenhorst
  * Navicula guadalupensis Manguin in Bourrelly & Manguin, 1952
  * Navicula guarujana Zimmermann, 1918
  * Navicula guaynaboensis Hagelstein, 1939
  * Navicula guayqueriae Frenguelli, 1934
  * Navicula guetharyana Fusey, 1953
  * Navicula guihotii Amossé, 1969
  * Navicula guinardiana Brun in Brun & Tempère, 1889
  * Navicula gujaratensis Guiry & Karthick, 2020
  * Navicula guluensis Giffen, 1963
  * Navicula gurovii Pantocsek, 1892 †
  * Navicula guttata Grunow, 1880
  * Navicula guttulifera Rabenhorst, 1853
  * Navicula gutvinskii Pantocsek, 1892
  * Navicula gyrinida Mann, 1907
  * Navicula gysingensis Foged, 1952
  * Navicula gálikii Pantocsek, 1889
  * Navicula h Karsten, 1899
  * Navicula h-album Cleve, 1894
  * Navicula habena M.H.Hohn & Hellerman, 1963
  * Navicula habita Hustedt, 1952
  * Navicula habitata W. Smith, 1859
  * Navicula hachiroensis H. Kobayasi in Kobayasi & al., 1977
  * Navicula hagelsteinii Hustedt, 1962
  * Navicula hahni Petit
  * Navicula haitiana
  * Navicula hajosii Pantocsek, 1909
  * Navicula halinae A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
  * Navicula halionata Pantocsek
  * Navicula halophilioides Hustedt, 1959
  * Navicula halophiloides Hustedt, 1959
  * Navicula hambergi Hustedt, 1924
  * Navicula hamiltonii A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
  * Navicula hamulifera Grunow, 1880
  * Navicula hancockii Schoeman in Schoeman & Meaton, 1982
  * Navicula hangchowensis Skvortzow, 1937
  * Navicula hankae Skvortzow, 1929
  * Navicula hanseatica Lange-Bertalot & Stachura, 1998
  * Navicula hanseni Möller, 1950
  * Navicula hanseniana Lee & Reimer, 1984
  * Navicula hantkenii Pantocsek, 1889
  * Navicula haradaae Pantocsek, 1892
  * Navicula harbinensis Skvortzow, 1937
  * Navicula harderi Hustedt, 1949
  * Navicula hariola Cholnoky, 1966
  * Navicula harmoniae L.L.Bahls, 2014
  * Navicula harpa Ehrenberg, 1846
  * Navicula harrisoniana Cholnoky, 1959
  * Navicula hartii Cholnoky, 1963
  * Navicula hartzii Foged, 1962
  * Navicula hassiaca Krasske, 1925
  * Navicula hasta Pantocsek, 1892
  * Navicula hastaeformis Cholnoky, 1960
  * Navicula hastata Jurilj, 1954 †
  * Navicula hastatula Lange-Bertalot & Miho, 2001
  * Navicula hauckii Cleve, 1881
  * Navicula haueri Grunow
  * Navicula hawaiiensis Johansen in Rushforth, Kaczmarska & Johansen, 1984
  * Navicula haynaldii Pantocsek, 1889
  * Navicula haytiana Truan y Luard & Witt, 1888
  * Navicula hazslinsky
  * Navicula hazslinszkyi Pantocsek, 1889
  * Navicula hebetata W. Smith, 1859
  * Navicula hebridensis Gregory
  * Navicula hecateia Cholnoky, 1965
  * Navicula hedini Hustedt, 1922
  * Navicula heeri Pantocsek
  * Navicula heerii Pantocsek, 1889
  * Navicula heidenii (Heiden) Simonsen, 1992
  * Navicula heilprinensis Foged, 1955
  * Navicula heimansii van Dam & Kooyman, 1982
  * Navicula heimansioides Lange-Bertalot, 1993
  * Navicula heimii Manguin
  * Navicula helea Frenguelli, 1933
  * Navicula helensis Schulz, 1926
  * Navicula helensoides Archibald, 1966
  * Navicula helmandensis Foged, 1959
  * Navicula helminae Heiden
  * Navicula hemilyrata Missuna, 1914
  * Navicula hemiptera sensu Schmidt in Schmidt & al., 1876
  * Navicula hemiviridula M. Peragallo in Héribaud & al., 1920
  * Navicula henckeli Skvortzow & Meyer, 1928
  * Navicula hennedii Janisch, 1862
  * Navicula hennedyella Hustedt, 1987
  * Navicula hennedyi W.Smith, 1856
  * Navicula hennedyi sensu Witt, 1885
  * Navicula hennedyii
  * Navicula hennedyoides Hustedt, 1964
  * Navicula henriquesii Zimmermann, 1917
  * Navicula herbstiae Metzeltin & Lange-Bertalot, 1998
  * Navicula heribaudi M.Peragallo
  * Navicula heroina A.W.F.Schmidt, 1876
  * Navicula herrmanii Reichelt in Cleve, 1894
  * Navicula hetero-punctata Chin & Cheng, 1979
  * Navicula heteroflexa Pantocsek
  * Navicula heterostauron Germain, 1937
  * Navicula heterosticha Yartseva, 1960
  * Navicula heterostriata Fusey, 1948
  * Navicula heterovalvata R.Simonsen, 2012
  * Navicula heufleri Grunow, 1860
  * Navicula hevesensis Pantocsek, 1889
  * Navicula heviziana Gallik, 1935
  * Navicula hexapla A.W.F.Schmidt, 1877
  * Navicula hibernica O'Meara, 1875
  * Navicula hibschii Reichelt collection, 1900
  * Navicula higleri A.Witkowski & Lange-Bertalot, 2009
  * Navicula hilarula Pantocsek, 1892
  * Navicula hilliardii Manguin ex Kociolek & Reviers, 1996
  * Navicula hintzii Lange-Bertalot, 1993
  * Navicula hippodontafallax Witkowski & Ch.Li in Witkowski & al., 2016
  * Navicula hippodontaformis A. Witkowski, C. Riaux-Gobin & G. Daniszewska-Kowalczyk, 2010
  * Navicula hirudo Rabenhorst, 1864
  * Navicula hochstetteri Grunow, 1863
  * Navicula hochstetteriana Grunow, 1867
  * Navicula hodgeana Patrick & Freese, 1961
  * Navicula hoefleri Cholnoky & Schindler
  * Navicula hoevsgoelreinhardtii M.B.Edlund & N.Soninkhishing, 2009
  * Navicula hoffmannii Pantocsek, 1889
  * Navicula hofmanniae Lange-Bertalot, 1993
  * Navicula hohnii VanLandingham, 1975
  * Navicula hollandica Cholnoky, 1963
  * Navicula hollerupensis Foged, 1962
  * Navicula holmenii N.Foged, 1955
  * Navicula holmiensis Cleve, 1881
  * Navicula holstii Cleve, 1881
  * Navicula holubyi Pantocsek, 1886
  * Navicula homburgiana Hustedt, 1966
  * Navicula honesta Fontell in Man., Cleve-Euler, 1953
  * Navicula hongkongensis Skvortzov, 1975
  * Navicula hordeiformis Pantocsek, 1889
  * Navicula hornigii Pantocsek, 1892
  * Navicula horstii D. Metzeltin in D. Metzeltin & H. Lange-Bertalot, 2002
  * Navicula horvathii Grunow, 1860
  * Navicula hospes Schmidt in Schmidt & al., 1875
  * Navicula hovassei Manguin, 1954
  * Navicula hudsonis Grunow, 1891
  * Navicula huei
  * Navicula hugenottarum Cholnoky, 1959
  * Navicula humboldtiana H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
  * Navicula humilis Donkin, 1872
  * Navicula humjibreensis Foged, 1966
  * Navicula hummii Hustedt, 1955
  * Navicula hunanensis J.Y.Chen & H.Z.Zhu
  * Navicula huniensis Foged, 1966
  * Navicula hustedtiana Simonsen, 1959
  * Navicula hustedtii Krasske, 1923
  * Navicula hustedtii sensu Foged, 1958
  * Navicula hyalina Hajós, 1968
  * Navicula hyalinula De Toni, 1891
  * Navicula hyalosira Cleve, 1891
  * Navicula hyalosirella Hustedt, 1987
  * Navicula hybrida M. Peragallo & Héribaud in Héribaud, 1893
  * Navicula hyperborea Grunow, 1860
  * Navicula hypothetica
  * Navicula hyrtlii Pantocsek
  * Navicula iasnitskii Skvortzow & Meyer, 1928
  * Navicula iberica Azpeitia, 1911
  * Navicula ignobilis Krasske, 1938
  * Navicula ignobilis Pantocsek, 1889
  * Navicula ignorata Schimanski, 1978
  * Navicula ignorata Skvortzov, 2012
  * Navicula ignota Krasske, 1932
  * Navicula ikarii
  * Navicula illicita Manguin ex Kociolek & Reviers, 1996
  * Navicula illinoensis Ehrenberg, 1854
  * Navicula illustra Pantocsek
  * Navicula illustrioides Hustedt, 1964
  * Navicula illustris Krasske, 1951
  * Navicula ilopangoensis Hustedt, 1956
  * Navicula imbecilla Cholnoky, 1959
  * Navicula imbellis M.H.Hohn & Hellerman, 1963
  * Navicula imbricata Bock, 1962
  * Navicula imitans A.Mann, 1925
  * Navicula impangenica Cholnoky, 1968
  * Navicula impercepta Hustedt, 1964
  * Navicula imperfecta Cleve, 1883
  * Navicula imperialis (Ehrenberg) Kützing, 1849
  * Navicula impertila Hohn & Hellerman, 1966
  * Navicula impexa Hustedt, 1961
  * Navicula implana Hustedt, 1964
  * Navicula impleta Cleve & Grove, 1891
  * Navicula importuna Hustedt, 1942
  * Navicula impressa Grunow in Schmidt & al., 1875
  * Navicula impressa Lagerstedt in A. Schmidt, 1876
  * Navicula inaequalis Crouan fr. in Schramm & Mazé, 1865
  * Navicula inaequalis Crouan fr. in Schramm & Mazé, 1866
  * Navicula inaequalis Ehrenberg, 1836 †
  * Navicula inaequilatera Lagerstedt, 1873
  * Navicula inaequistriata Rattray, 1887 (1888)
  * Navicula inattingens R.Simonsen, 1959
  * Navicula inaurata Hendey, 1958
  * Navicula incarum U.Rumrich & Lange-Bertalot
  * Navicula incerta Ehrenberg, 1837
  * Navicula incertata Lange-Bertalot, 1985
  * Navicula incisa Meister, 1932
  * Navicula incisa O'Meara, 1876
  * Navicula inclementis Hendey, 1964
  * Navicula inclinata Hustedt, 1945
  * Navicula includens Pantocsek, 1892
  * Navicula incoacta Hustedt, 1987
  * Navicula incognita Krasske, 1932
  * Navicula incomitatus M.H.Hohn & Hellerman, 1963
  * Navicula incomperta Lewis
  * Navicula incomposita Hagelstein
  * Navicula incompta Krasske, 1932
  * Navicula incongruens Hendey, 1977
  * Navicula inconspicua Gregory, 1857
  * Navicula incudiformis Grunow in Cleve, 1883
  * Navicula inculta Manguin, 1964
  * Navicula inculta Pantocsek, 1892
  * Navicula incurva
  * Navicula incurvata Gregory, 1856
  * Navicula incus Grunow, 1876
  * Navicula indefinita M. Peragallo in Tempère & Peragallo, 1908
  * Navicula indemnis M.H.Hohn & Hellerman, 1963
  * Navicula index Tempère & Brun in Brun & Tempère, 1889
  * Navicula indianensis Reimer, 1961
  * Navicula indica Ehrenberg, 1845
  * Navicula indicatrix VanLandingham, 1975
  * Navicula indifferens Hustedt, 1942
  * Navicula indigens Mann, 1925
  * Navicula indu Skvortzov, 2012
  * Navicula inducens Cholnoky, 1963
  * Navicula indulgens Simonsen, 1959
  * Navicula inelegans Grove & Sturt, 1887
  * Navicula inexacta A. Mann, 1925
  * Navicula inexpectans J.R.Carter, 1964
  * Navicula inexplorata Krasske, 1939
  * Navicula inexspectans Carter, 1964
  * Navicula infaceta Cholnoky, 1959
  * Navicula infirma Grunow, 1882
  * Navicula infirma Manguin, 1941
  * Navicula infirmata Hustedt & Manguin in Rabenhorst, 1962
  * Navicula inflasa Rabenhorst, 1859
  * Navicula inflata Donkin, 1870
  * Navicula inflata Gandhi, 1970
  * Navicula inflata Grunow in Cleve & Möller, 1879
  * Navicula inflatoides H.P. Gandhi, 1998
  * Navicula inflexa (Gregory) Ralfs, 1861
  * Navicula informe Grunow
  * Navicula infossa Laslandes & Kociolek in Kociolek & al., 2014
  * Navicula infrenis M.H.Hohn & Hellerman, 1963
  * Navicula ingapirca H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
  * Navicula ingens Mann, 1925
  * Navicula ingenua Hustedt, 1957
  * Navicula ingoldii Foged, 1966
  * Navicula ingrata Krasske, 1938
  * Navicula ingstadii Foged, 1964
  * Navicula ingustata Cholnoky, 1962
  * Navicula iniqua Krasske, 1932
  * Navicula injusta Simonsen, 1959
  * Navicula innommata Leuduger-Fortmorel, 1892
  * Navicula inornata Grunow, 1880
  * Navicula inpossibilis Cholnoky, 1966
  * Navicula inpunctata Cholnoky, 1957
  * Navicula inquisitor Cholnoky, 1968
  * Navicula inscendens Pantocsek, 1905
  * Navicula inscriptura Hendey, 1977
  * Navicula insepta Carter & Denny, 1982
  * Navicula insequens Hustedt, 1955
  * Navicula inseriata Hajós, 1968
  * Navicula insignificans Mann, 1925
  * Navicula insignis Pantocsek, 1889
  * Navicula insignita Hustedt, 1942
  * Navicula insociabilis sensu Hustedt in Schmidt & al., 1934
  * Navicula insolata Loseva, 1983
  * Navicula insolita É.Manguin ex J.P.Kociolek & B.de Reviers, 1996
  * Navicula insolubilis Cholnoky, 1963
  * Navicula insularis Cleve-Euler, 1953
  * Navicula insularis Ehrenberg, 1841
  * Navicula insulsa Manguin, 1952
  * Navicula insulsa Metzeltin & Lange-Bertalot, 1998
  * Navicula insuta Manguin, 1960
  * Navicula intacta Pantocsek, 1902
  * Navicula intercedens Schmidt in Schmidt & al., 1890
  * Navicula interglacialis Hustedt, 1944
  * Navicula interlineata Grove & Sturt, 1886
  * Navicula intermedia (Grunow in Schmidt & al.) Mann, 1907
  * Navicula intermixta Hustedt, 1966
  * Navicula interposita Lewis, 1865
  * Navicula interrupta Hustedt & Ehrenberg in Ehrenberg
  * Navicula interrupta Marsson, 1900
  * Navicula interruptestriata Simonsen in Schwabe & Simonsen, 1961
  * Navicula interversa Peragallo & Peragallo, 1911
  * Navicula intestinalis Lange-Bertalot & A.Witkowski, 2009
  * Navicula intractata Hustedt, 1961
  * Navicula intricata Karajeva, 1963
  * Navicula inutilis Krasske, 1949
  * Navicula invenusta Mann, 1907
  * Navicula inversa Ehrenberg, 1840
  * Navicula investigata Heiden, 1905
  * Navicula invicta Hustedt in Schmidt & al., 1936
  * Navicula invisitata Heiden in Schmidt & al., 1905
  * Navicula involata Carter & Denny, 1982
  * Navicula involuta Mayer, 1919
  * Navicula iota Cleve, 1894
  * Navicula iranensis Hustedt, 1962
  * Navicula irata Krasske, 1932
  * Navicula ireneae Van de Vijver, Jarlman & Lange-Bert., 2010
  * Navicula iridescens Mann, 1925
  * Navicula irmengardis Lange-Bertalot, 1996
  * Navicula irminae A. Witkowski, C. Riaux-Gobin & G. Daniszewska-Kowalczyk, 2010
  * Navicula irminiae A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
  * Navicula irregularis Gasse, 1975
  * Navicula irregularis Pantocsek, 1889
  * Navicula irreversa Cholnoky, 1965
  * Navicula irritans Cholnoky, 1959
  * Navicula irritans Simonsen, 1959
  * Navicula irrorata sensu Schmidt in Schmidt & al., 1874
  * Navicula isabelensiformis Seddon & Witkowski, 2011
  * Navicula isabelensiminor Seddon & Witkowski, 2011
  * Navicula isabelensis Seddon & Witkowski, 2011
  * Navicula isabelensoides Seddon & Witkowski, 2011
  * Navicula iserentantii Lange-Bertalot & Witkowski, 2000 †
  * Navicula isertii Foged, 1966
  * Navicula islandica Grunow in Cleve & Möller, 1879
  * Navicula islandica Østrup, 1918
  * Navicula isolata K.E. Lohman, 1957
  * Navicula isolita Manguin, 1960
  * Navicula isostauron Ehrenberg, 1841
  * Navicula iversenii Foged, 1962
  * Navicula ivigtutensis Foged, 1953
  * Navicula izsopallagae Heiden in Schmidt & al., 1905
  * Navicula jaagi
  * Navicula jacksoni Schrader, 1969
  * Navicula jacobii Manguin in Bourrelly & Manguin, 1952
  * Navicula jacotiae Schoeman, 1970
  * Navicula jacuda Pantocsek, 1902
  * Navicula jaernefelti Hustedt in Schmidt & al., 1936
  * Navicula jaernefeltii Hustedt, 1942
  * Navicula jaernefeltioides Ricard, 1975
  * Navicula jakhalsensis VanLandingham, 1975
  * Navicula jakkalsica Cholnoky, 1955
  * Navicula jakovljevici Hustedt, 1945
  * Navicula jamaicensis Greville
  * Navicula janischiana Rabenhorst in Janisch & Rabenhorst, 1862
  * Navicula janischii Castracane, 1886
  * Navicula japonica Heiden, 1903
  * Navicula jarnefelti
  * Navicula jarrensis
  * Navicula jasnitskii
  * Navicula jatobensis Krasske
  * Navicula javanenesis Leuduger-Fortmorel, 1892
  * Navicula javanica Grunow, 1867
  * Navicula jeffreyi Hallegraeff & Burford, 1996
  * Navicula jejuna A.W.F.Schmidt
  * Navicula jejunoides Van Heurck
  * Navicula jelineckiana
  * Navicula jelinekiana Grunow, 1867
  * Navicula jennerii W.Smith, 1853
  * Navicula jentzschii Grunow, 1882
  * Navicula jequitinhonhae Zimmermann, 1919
  * Navicula jessenii Foged, 1962
  * Navicula jimboi Pantocsek, 1892
  * Navicula jkarii Skvortzow, 1929
  * Navicula jogensis H.P. Gandhi, 1996
  * Navicula johanrossii Giffen, 1967
  * Navicula johnsoniana Greville, 1863
  * Navicula johnsonii (W.Smith) O'Meara, 1876
  * Navicula jonssoni Østrup, 1918
  * Navicula jordani Ehrenberg, 1854
  * Navicula josephi Pantocsek, 1902
  * Navicula josephinorum Zanon, 1928
  * Navicula jota
  * Navicula joubaudii H.Germain, 1982
  * Navicula joursacensis Héribaud, 1903
  * Navicula jouseana Skvortzow, 1971
  * Navicula juanitalinda D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
  * Navicula jucuda Cleve-Euler, 1948
  * Navicula jucuda Pantocsek, 1902
  * Navicula jugata Cleve, 1881
  * Navicula jugifera Hustedt in Schmidt & al., 1936
  * Navicula julieni Héribaud & Brun in Héribaud, 1893
  * Navicula jungii Krasske
  * Navicula jurassensis Fusey, 1948
  * Navicula jurgensii Kützing, 1844
  * Navicula jurilji Hajós, 1968
  * Navicula justa Hustedt, 1955
  * Navicula juvenis (Ehrenberg) F.W. Mills, 1934
  * Navicula kaapensis Cholnoky, 1955
  * Navicula kaelfvensis Grunow Ms. in Cleve, 1894
  * Navicula kaikonkiensis Woodhead & Tweed, 1960
  * Navicula kalganica Skvortzow, 1935
  * Navicula kamorthensis Grunow, 1863
  * Navicula kamorthensis Schmidt in Schmidt & al., 1875
  * Navicula kanemi Iltis, 1971
  * Navicula kanitzii Pantocsek, 1892
  * Navicula kantsiensis Giffen, 1967
  * Navicula kappa Cleve, 1894
  * Navicula karelia (Cleve) M. Peragallo, 1903
  * Navicula karelica Cleve-Euler
  * Navicula kariana Grunow in Cleve & Grunow, 1880
  * Navicula kariana Meunier, 1910
  * Navicula karsia Hohn, 1961
  * Navicula karstenii Pantocsek, 1902
  * Navicula karyokonites Cleve, 1883
  * Navicula kawamurae Skvortzow, 1936
  * Navicula keeleyi Patrick, 1945
  * Navicula kefvingensis sensu Pantocsek, 1902
  * Navicula kelleri Pantocsek, 1889
  * Navicula kenaiensis McLaughlin & Stone, 1976
  * Navicula kenaiensis Stone in McLaughlin & Stone, 1986
  * Navicula kenon Skvortzow, 1938
  * Navicula kenyae Cholnoky, 1960
  * Navicula kepesii Grunow, 1884
  * Navicula kerguelenensis Castracane, 1886
  * Navicula kerguelensis Heiden
  * Navicula kernensis Hanna, 1932
  * Navicula kertschiana Pantocsek, 1902
  * Navicula khentiiensis D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
  * Navicula kincaidii Sovereign, 1963
  * Navicula kinkeriana Pantocsek, 1892
  * Navicula kinkerii Pantocsek, 1889
  * Navicula kirchenpauerii De Toni, 1891
  * Navicula kirchneriana Florin, 1970
  * Navicula kisber M.H.Hohn & Hellerman, 1963
  * Navicula kittoniana O'Meara, 1875
  * Navicula kittoniana Schmidt in Schmidt & al., 1874
  * Navicula kizakensis Skvortzow, 1936
  * Navicula kjellmanii (Cleve) Cleve
  * Navicula klavsenii Østrup
  * Navicula kleerekoperi Patrick, 1944
  * Navicula knysnensis Cholnoky, 1956
  * Navicula kochii Pantocsek, 1889
  * Navicula koeiei Foged, 1959
  * Navicula koenigi Brockmann, 1950
  * Navicula kohlenbachii H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
  * Navicula kohlmaieri Lange-Bertalot, 1998
  * Navicula kolbei Meister, 1932
  * Navicula kolbei Poretzky & Anissimova, 1933
  * Navicula kolentiensis Woodhead & Tweed, 1960
  * Navicula kolugoensis Foged, 1966
  * Navicula komarovii Poretzky, 1940
  * Navicula kongsfjordensis Stachura & al., 2015
  * Navicula koniamboensis Manguin ex Kociolek & Reviers, 1996
  * Navicula konstantini Skabichevskií, 1952
  * Navicula koreana Skvortzow, 1936
  * Navicula korzeniewskii A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
  * Navicula koslowii Pantocsek, 1913
  * Navicula kossuthii Pantocsek, 1886
  * Navicula kotschyana Grunow in Cleve & Grunow, 1880
  * Navicula kovalchookiana Skvortzow, 1937
  * Navicula kozlowii
  * Navicula kpongensis Foged, 1966
  * Navicula kraeuselii Cholnoky, 1954
  * Navicula krammeriae Lange-Bertalot in Lange-Bertalot & Metzeltin, 1996
  * Navicula krasskei Hustedt, 1930
  * Navicula krenneri Z.Levkov, M.B.Edlund & T.Nakov, 2008 †
  * Navicula kriegeri Krasske, 1943
  * Navicula krockii Grunow, 1882
  * Navicula krsticii Z.Levkov, 2007
  * Navicula kryokonites Cleve
  * Navicula kryophila Cleve, 1883
  * Navicula kuelbsii Lange-Bertalot, 1985
  * Navicula kuetzingiana H.L. Smith, 1878
  * Navicula kuetzingii Grunow, 1860
  * Navicula kuntzei Reichelt, 1898
  * Navicula kuolensis Cleve-Euler, 1934
  * Navicula kuripanensis Hustedt in Schmidt & al., 1936
  * Navicula kurzii Grunow in Cleve, 1878
  * Navicula kuseliana H. Lange-Bertalot & Rumich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
  * Navicula kutzingiana H.L.Smith, 1878
  * Navicula kuusamensis Cleve-Euler, 1939
  * Navicula kuwaitiana Hendey, 1970
  * Navicula kwamkuji Hustedt, 1922
  * Navicula kützingiana Hilse, 1863
  * Navicula labrobacata Bone & Gosden, 1968
  * Navicula lacertosa Hustedt, 1955
  * Navicula laciniosa Schmidt in Schmidt & al., 1875
  * Navicula lacrimans A.W.F.Schmidt
  * Navicula lacrymans
  * Navicula lacuna Patrick & Freese, 1961
  * Navicula lacunarum Grunow, 1880
  * Navicula lacunicola Patrick & Freese, 1961
  * Navicula lacunolaciniata Lange-Bertalot & Bonik, 1976
  * Navicula lacunosa Simonsen, 1992
  * Navicula lacus-chandolensis Guiry & Karthick, 2020
  * Navicula lacus-karluki Manguin ex Kociolek & Reviers, 1996
  * Navicula lacus-lemani (J.Brun) J.Brun
  * Navicula lacusbaicali
  * Navicula lacuskarluki Manguin, 1960
  * Navicula lacuslemanii
  * Navicula lacustris Grunow, 1860
  * Navicula lacustris Schmidt, 1874
  * Navicula lacuum Lange-Bert., Hofmann, Werum & Van de Vijver, 2009
  * Navicula ladogensis Cleve, 1891
  * Navicula laeta A.Mayer, 1919
  * Navicula laeta Ehrenberg, 1841
  * Navicula laetvittata
  * Navicula laevimarginata Hustedt, 1966
  * Navicula laevis Cleve-Euler, 1922
  * Navicula laevis Ehrenberg, 1854
  * Navicula laevis Pantocsek, 1889
  * Navicula laevissima sensu Donkin, 1871
  * Navicula laevissima sensu W. Smith, 1856
  * Navicula lagerheimii sensu Hustedt, 1921
  * Navicula lagerheimii sensu Manguin, 1942
  * Navicula lagerstedti
  * Navicula lagerstedtii O'Meara, 1876
  * Navicula lagerstedtii sensu Hustedt in Schmidt & al., 1934
  * Navicula lagerstedtii sensu Kolbe, 1959
  * Navicula lagerstedtii sensu Motschi, 1907
  * Navicula lagunae Seddon & Witkowski, 2011
  * Navicula laingii Foged, 1966
  * Navicula lalia M.H.Hohn & Hellerman, 1963
  * Navicula lambertensis Héribaud, 1903
  * Navicula lamella Ehrenberg, 1840
  * Navicula lamii Manguin, 1941
  * Navicula lampra Schrader, 1969
  * Navicula lamprocampa Ehrenberg, 1840
  * Navicula lamprocarpa
  * Navicula lanceolata Ehrenberg, 1838
  * Navicula lanceolata sensu Hassall, 1845
  * Navicula lanceolata sensu W. Smith, 1853
  * Navicula lancettula Schumann, 1867
  * Navicula lange-bertalotii E.Reichardt, 1985
  * Navicula langoraensis Foged, 1966
  * Navicula lapeyrereana Tempère & M. Peragallo in Tempère & Peragallo, 1908
  * Navicula lapidosa sensu Foged, 1958
  * Navicula lapila J.R.Carter, 1981
  * Navicula lapsa Carter & Denny, 1992
  * Navicula lata Brébisson ex Kützing, 1846
  * Navicula lata sensu Van Heurck, 1880
  * Navicula latelongitudinalis R.M.Patrick, 1959
  * Navicula latens Krasske ex Hustedt, 1934 †
  * Navicula lateropunctata J.H.Wallace, 1960
  * Navicula laterostrata Hustedt, 1925
  * Navicula latestriata Gregory
  * Navicula latestriata Petit & Leuduger-Fortmoral
  * Navicula latevittata Pantocsek, 1892
  * Navicula laticeps Hustedt, 1942
  * Navicula laticeps sensu Cleve-Euler, 1953
  * Navicula latissima J.W. Bailey, 1854
  * Navicula latissima sensu Brockmann, 1928
  * Navicula lauca U.Rumrich & Lange-Bertalot
  * Navicula lauriensis J.Frenguelli & H.A.Orlando, 1958
  * Navicula lauta Grunow
  * Navicula lawsonii Foged, 1966
  * Navicula leboimei Manguin, 1960
  * Navicula leemanniae Cholnoky, 1854
  * Navicula lefevrei Manguin in Allorge & Manguin, 1941
  * Navicula legumen Ehrenberg
  * Navicula lehmanniae Lange-Bertalot & Steindorf in Moser, Steindorf & Lange-Bertalot, 1995
  * Navicula leistikowii Lange-Bertalot, 1993
  * Navicula lemanniae Cholnoky, 1954
  * Navicula lemkei A.Witkowski, 2009
  * Navicula lemmermanni Hustedt, 1911
  * Navicula lengana
  * Navicula lenoblei Manguin, 1952
  * Navicula lenticula Østrup, 1913
  * Navicula lenzi Krasske, 1939
  * Navicula lenzii Hustedt, 1936
  * Navicula leonardii Compère, 1967
  * Navicula leonis Pantocsek, 1905
  * Navicula lepida Gregory, 1856
  * Navicula lepidissima Cleve-Euler, 1953
  * Navicula lepidosa Khabakov, 1945
  * Navicula lepidula Grunow, 1880
  * Navicula lepta Schrader, 1969
  * Navicula leptocephala Brébisson, 1880
  * Navicula leptocephala Rabenhorst, 1853
  * Navicula leptoceros Ehrenberg, 1854
  * Navicula leptogongyla Ehrenberg, 1841 †
  * Navicula leptogongyla Ehrenberg, 1843
  * Navicula leptolopa Meister, 1937
  * Navicula leptorhynchus Ehrenberg, 1843
  * Navicula leptosoma Grunow, 1880
  * Navicula leptostigma sensu Pantocsek, 1902
  * Navicula leptostriata Jørgensen, 1948
  * Navicula leptostylus Ehrenberg, 1842
  * Navicula leptotermina Ehrenberg, 1844 (1845)
  * Navicula lesinensis Cleve ex Thum, 1889
  * Navicula lesinensis Grunow in Cleve, 1885
  * Navicula lesmonensis Hustedt, 1957
  * Navicula lesothensis Schoeman, 1969
  * Navicula letourneurii Pantocsek, 1889
  * Navicula letulenta Archibald, 1966
  * Navicula leudugeri Cleve, 1883
  * Navicula levanderi Hustedt, 1934
  * Navicula leveillei Héribaud, 1903
  * Navicula levensis Carruthers in J.E. Gray, 1864
  * Navicula levis Pantocsek, 1889
  * Navicula levissima
  * Navicula leviuscula De Toni, 1891
  * Navicula lewisiana Greville, 1863
  * Navicula liaotungiensis Skvortzow, 1929
  * Navicula libellus Gregory, 1857
  * Navicula libonensis Schoeman, 1970
  * Navicula librile Ehrenberg, 1832
  * Navicula liburnica Grunow, 1860
  * Navicula libyca Ehrenberg, 1840
  * Navicula licenti Skvortzow, 1935
  * Navicula ligneri Lauby, 1910
  * Navicula limanense Østrup in Héribaud & al., 1920
  * Navicula limata Hustedt, 1944
  * Navicula limatoides Hustedt, 1950
  * Navicula limbata Ehrenberg, 1843
  * Navicula limicola Cleve, 1893
  * Navicula limitanea Schmidt in Schmidt & al., 1875
  * Navicula limnetica Kociolek in Kociolek & al., 2014
  * Navicula limosa Rabenhorst, 1853
  * Navicula limosa sensu Donkin, 1872
  * Navicula limosa sensu Lagerstedt, 1873
  * Navicula limpida Perty, 1852
  * Navicula lindae Sullivan & Reimer, 1975
  * Navicula linearicuneata Gleser in Afanas'eva & Gleser, 1986
  * Navicula linearis Bory, 1827
  * Navicula linearis Grunow, 1860
  * Navicula lineata Bory, 1824
  * Navicula lineata Bory, 1827
  * Navicula lineata Turpin, 1828 (1816-1829)
  * Navicula lineola Ehrenberg, 1854
  * Navicula lineola Grunow
  * Navicula lineolata Ehrenberg, 1838
  * Navicula lineolata Ehrenberg, 1843
  * Navicula lineostriata Patrick, 1936
  * Navicula linter O. Witt, 1873
  * Navicula liostauron Ehrenberg, 1841
  * Navicula liouvillei M. Peragallo, 1921
  * Navicula lirata Ehrenberg
  * Navicula lithognatha Cholnoky, 1963
  * Navicula lithognathoides Cholnoky, 1963
  * Navicula litoralis
  * Navicula litoricola Hustedt, 1955
  * Navicula litorina Heiden, 1900
  * Navicula litoris Salah, 1953
  * Navicula litos M.H.Hohn & Hellerman, 1963
  * Navicula littoralioides de Wildeman, 1897
  * Navicula littoralis Donkin, 1871
  * Navicula ljungneri Cleve-Euler
  * Navicula lobata Cleve, 1878
  * Navicula lobata Grove & Sturt, 1887
  * Navicula lobata Schwartz in Rabenhorst, 1877
  * Navicula lobeliae Jørgensen, 1948
  * Navicula loczyi Pantocsek, 1889
  * Navicula lohmannii H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
  * Navicula loibl-sittlerii Reichardt, 1988
  * Navicula lomastriata Hohn, 1966
  * Navicula londonensis Foged, 1964
  * Navicula longa (Gregory) Ralfs ex Pritchard, 1861
  * Navicula longi Reinhold, 1937
  * Navicula longicephala Hustedt, 1944
  * Navicula longifissa Hustedt, 1952
  * Navicula longirostris Hustedt, 1930
  * Navicula longistriata Horikawa & Okuno in Okuno, 1940
  * Navicula lorami Frenguelli, 1936 (1938)
  * Navicula lorcana Azpeitia, 1911
  * Navicula lorenziana Grunow, 1860
  * Navicula lorenzii (Grunow) Hustedt, 1961
  * Navicula lovenii Foged, 1964
  * Navicula loveridgei Cholnoky, 1964
  * Navicula lubbockii Hohn & Hellerman, 1961
  * Navicula lubetii Konig, 1959
  * Navicula lucenoides Giffen, 1980
  * Navicula lucens Hustedt, 1942
  * Navicula lucentiformis Cholnoky, 1960
  * Navicula luciae A. Witkowski & H. Lange-Bertalot in H. Lange-Bertalot & S. I. Genkal, 1999
  * Navicula luciana Cholnoky, 1960
  * Navicula lucida O'Meara, 1876
  * Navicula lucida Pantocsek, 1892
  * Navicula lucidula Grunow, 1880
  * Navicula lucifica (Kuntze) Pantocsek
  * Navicula lucinensis Hustedt, 1950
  * Navicula luculenta A.W.F.Schmidt, 1876
  * Navicula ludloviana Schmidt, 1876 †
  * Navicula ludlowiana
  * Navicula luisii Patrick, 1961
  * Navicula lumbricastriata Hohn & Hellerman, 1966
  * Navicula lumen H. Peragallo, 1888
  * Navicula lunata Kützing, 1844
  * Navicula lunatapicalis Salah, 1953
  * Navicula lundii Reichardt, 1985
  * Navicula lundii Sinha & Srivastava, 1986
  * Navicula lundstroemii sensu Cholnoky, 1958
  * Navicula lundstromii
  * Navicula lundströmii
  * Navicula lunula Cleve, 1894
  * Navicula lunulifera H.P.Gandhi ex Karthick, 2020
  * Navicula lunyacsekii Pantocsek, 1886
  * Navicula lupula Carter & Denny, 1982
  * Navicula lurinda Carter & Denny, 1982
  * Navicula lusitanica Zimmermann, 1917
  * Navicula lusoria Giffen, 1975
  * Navicula luxoriensis Foged, 1980
  * Navicula luzonensis Hustedt, 1942
  * Navicula lychnidis Jurilj, 1954
  * Navicula lyra Ehrenberg, 1843
  * Navicula lyra Kitton, 1884
  * Navicula lyra sensu Brockmann, 1950
  * Navicula lyra sensu Hanna, 1933
  * Navicula lyrans Jurilj, 1957
  * Navicula lyrata Ehrenberg, 1856
  * Navicula lyrella Hustedt, 1964
  * Navicula lyrigera Østrup, 1918
  * Navicula mabokiana Fusey, 1964
  * Navicula macdonaghi Frenguelli, 1930
  * Navicula macer Schoeman, 1973
  * Navicula maceria Schimanski, 1978
  * Navicula macilenta Ehrenberg, 1837 †
  * Navicula macra Grunow, 1876
  * Navicula macraeana Pantocsek, 1889
  * Navicula macraei Rabenhorst, 1864
  * Navicula macrocephala Schumann, 1867
  * Navicula macrogongyla Rabenhorst, 1860
  * Navicula macromphala Schumann, 1867
  * Navicula macropunctata Hajós, 1973
  * Navicula macula Gregory, 1856
  * Navicula maculata Hustedt
  * Navicula maculosa Donkin, 1871
  * Navicula maculosa H. Peragallo & M. Peragallo, 1898
  * Navicula madagascarensis Cleve in Tempère, 1890
  * Navicula madagascarensis Fritsch, 1914
  * Navicula madeirensis Lange-Bertalot, 1993
  * Navicula madrae Hanna & Grant, 1926
  * Navicula madumensis E.G.Jørgensen, 1948
  * Navicula maeandriana Cleve, 1893
  * Navicula maeandrinoides Hustedt in Schmidt & al., 1930
  * Navicula maeotica Pantocsek, 1902
  * Navicula magellancia
  * Navicula maginii M. Peragallo, 1924
  * Navicula magna Skvortzov
  * Navicula magnifica Hustedt in Schmidt & al., 1934
  * Navicula magocsyi
  * Navicula maharashtrensis Sarode & Kamat, 1984
  * Navicula mahoodii A. Witkowsi & Witton in A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
  * Navicula maidanae Metzeltin & Lange-Bertalot, 1998
  * Navicula maillardii Germain, 1982
  * Navicula major (sensu Dippel) F.W. Mills, 1934
  * Navicula major sensu Grunow in Schmidt & al., 1876
  * Navicula major sensu W. Smith, 1853
  * Navicula majuscula Hustedt, 1964
  * Navicula majusculoides Hustedt, 1964
  * Navicula malacarae Frenguelli, 1945
  * Navicula maleposita Simonsen, 1992
  * Navicula maliana Maillard, 1977
  * Navicula malica Carter & Denny, 1982
  * Navicula malinvaudi Héribaud, 1902
  * Navicula malombensis Otto Müller, 1910
  * Navicula malutiana Schoeman, 1969
  * Navicula mammalis Castracane, 1886
  * Navicula manginii M. Peragallo, 1924
  * Navicula manguini Guermeur, 1954
  * Navicula manifesta Hustedt, 1939
  * Navicula manifesta Marsson, 1900
  * Navicula maniliensis
  * Navicula mannii Hagelstein, 1939
  * Navicula manokwariensis Cholnoky, 1963
  * Navicula mansiensis Foged, 1966
  * Navicula mantichora Pantocsek, 1892
  * Navicula manubialis Archibald, 1966
  * Navicula mardansouensis Héribaud, 1908
  * Navicula margalithii Lange-Bertalot, 1985
  * Navicula margarita Pantocsek, 1905
  * Navicula margarita Schmidt in Schmidt & al., 1892
  * Navicula margaritacea Hustedt, 1937
  * Navicula margaritata Pantocsek, 1903
  * Navicula margaritiana Witkowski, 1994
  * Navicula margaritifera Pantocsek, 1892
  * Navicula margaritifera Truan y Luard & Witt, 1888
  * Navicula marginata Lewis, 1862
  * Navicula marginestriata Hustedt in Schmidt & al., 1936
  * Navicula margino-nodularis Salah, 1953
  * Navicula margino-ornata Salah, 1955
  * Navicula marginolineata Grove & Sturt, 1887
  * Navicula marginonodularis Salah, 1953
  * Navicula marginopunctata Grove & Sturt, 1887
  * Navicula marginulata Cleve, 1881
  * Navicula maria Hohn, 1966
  * Navicula mariagracielae D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
  * Navicula marina Janisch & Rabenhorst, 1863
  * Navicula mariposae Cholnoky, 1968
  * Navicula marlieri Kufferath, 1957
  * Navicula marmorata Jurilj, 1957
  * Navicula marnieri Manguin, 1957
  * Navicula marnierii Manguin, 1960
  * Navicula martini Krasske, 1939
  * Navicula martinii Krasske
  * Navicula martonfii Pantocsek, 1892
  * Navicula martyi Lauby, 1910
  * Navicula massadaea Ehrlich, 1978
  * Navicula massalskiana Kochman-Kedziora, Olech & Van de Vijver, 2020
  * Navicula mastogloidea Pantocsek, 1886
  * Navicula matanza VanLandingham, 1975
  * Navicula mauleri Brun, 1891
  * Navicula mauriciana Van Heurck, 1909
  * Navicula maxima sensu Donkin, 1872
  * Navicula mayeri A. Cleve, 1953
  * Navicula mediacomplexa M.H.Hohn & Hellernan, 1963
  * Navicula mediahelos M.H.Hohn & Hellerman, 1963
  * Navicula medica Skvortzow, 1935
  * Navicula medioconvexa Hustedt, 1961
  * Navicula mediocostata Reichardt, 1988
  * Navicula mediocriformis Coste & Ricard, 1983
  * Navicula medioinflata Pantocsek, 1912
  * Navicula mediopartita E.Grove ex A.Schmidt, 1896
  * Navicula mediopunctata Hustedt in Schmidt & al., 1934
  * Navicula mediterranea Cleve & Brun
  * Navicula mediterranea Kützing, 1844
  * Navicula megacuspida Carlson, 1913
  * Navicula megaloptera (Ehrenberg) Héribaud, 1893
  * Navicula megapolitana Heiden in Schmidt & al., 1903
  * Navicula megastauros Cleve, 1883
  * Navicula meisterii Pantocsek, 1912
  * Navicula melanesica Lange-Bertalot & Steindorf in Moser, Steindorf & Lange-Bertalot, 1995
  * Navicula melanocephala Giffen, 1975
  * Navicula melchersi Kutner, 1961
  * Navicula meleagris Kützing, 1844
  * Navicula melovskii Z.Levkov & S.Krstic, 2007
  * Navicula membranacea Cleve, 1897
  * Navicula menageae Cholnoky, 1954
  * Navicula menaiana Hendey, 1956
  * Navicula menapiensis O'Meara, 1876
  * Navicula menda J.R.Carter & Bailey-Watts, 1981
  * Navicula mendica Mann, 1925
  * Navicula mendosina Frenguelli, 1934
  * Navicula mendotia VanLandingham, 1975
  * Navicula mengeae Cholnoky, 1954
  * Navicula menilitica Pantocsek, 1889
  * Navicula meniscoides Hustedt, 1955
  * Navicula meniscula
  * Navicula menisculus Schumann, 1867 †
  * Navicula menisculus sensu Krenner, 1926
  * Navicula menisculus sensu Pantocsek, 1902
  * Navicula meniscus sensu Meister, 1912
  * Navicula mentzii Foged, 1962
  * Navicula mereschkowskii
  * Navicula meridiepacifica Hustedt
  * Navicula meridionalis Hustedt, 1952
  * Navicula meridiorecens D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
  * Navicula mersa Heiden
  * Navicula mesogongyla (Ehrenberg) Kützing
  * Navicula mesoleia Cleve in Cleve & Moller, 1879
  * Navicula mesoleia Cleve, 1881
  * Navicula mesolepta Heiberg, 1863
  * Navicula mesolepta sensu Schmidt in Schmidt & al., 1876
  * Navicula mesoleptoides Reinhard, 1869 (1870)
  * Navicula mesopachya Ehrenberg, 1842
  * Navicula mesotyla sensu Kutzing, 1844
  * Navicula mesotyla sensu Schumann, 1867
  * Navicula meulemansii A.Mertens, A.Witkowski & Lange-Bertalot, 2013
  * Navicula meyeri Foged, 1966
  * Navicula meyeri Skvortzov, 1937
  * Navicula mica Hohn & Hellerman, 1963
  * Navicula microcari Lange-Bertalot, 1993
  * Navicula microcephala Grunow, 1868
  * Navicula microdicta Cholnoky, 1962
  * Navicula microdigitoradiata Lange-Bertalot, 1993
  * Navicula microlyra Cholnoky, 1959
  * Navicula micropupula Cholnoky, 1957
  * Navicula microrhombus (Cholnoky) Schoeman & Archibald, 1977
  * Navicula microrhynchus Grunow, 1882
  * Navicula microrhynchus sensu Pantocsek, 1889
  * Navicula microstauron (Ehrenberg) O'Meara, 1875
  * Navicula microstoma Kützing, 1846
  * Navicula microtatos
  * Navicula migma M.H.Hohn & Hellerman, 1963
  * Navicula mikado Pantocsek, 1892
  * Navicula mikrotatos Pantocsek, 1886
  * Navicula millotiana Manguin, 1952
  * Navicula millsi Reinhold, 1937
  * Navicula milthersii Foged, 1962
  * Navicula mimicans Hanna, 1932
  * Navicula mimula Mann, 1925
  * Navicula mina Leuduger-Fortmorel, 1892
  * Navicula minima Grunow, 1880
  * Navicula minima sensu Foged, 1958
  * Navicula minimoides Manguin ex Kociolek & Reviers, 1996
  * Navicula minnewaukonensis Elmore, 1921
  * Navicula minor De Toni, 1892
  * Navicula minor Gregory, 1857
  * Navicula minthe Hohn & Hellermann, 1963
  * Navicula mintracta Carter & Denny, 1982
  * Navicula minusculoides Hustedt, 1942
  * Navicula minuta Sheshukova, 1956
  * Navicula minuta Skvortzow, 1936
  * Navicula minutissima Grunow, 1860
  * Navicula minutissima Rabenhorst, 1853
  * Navicula minutula W.Smith, 1853
  * Navicula miocenica Hajós, 1959
  * Navicula mira Pantocsek & Greguss in Greguss, 1913
  * Navicula mirabilis Castracane, 1886
  * Navicula mirabilis G.Leuduger-Fortmorel
  * Navicula mirabunda Pantocsek & Greguss in Greguss, 1913
  * Navicula miramaris Frenguelli, 1925
  * Navicula miranda Hustedt, 1964
  * Navicula mirifica Krasske
  * Navicula misella Hustedt, 1955
  * Navicula misionera Frenguelli, 1953
  * Navicula mitigata Hustedt, 1966
  * Navicula mitis Hustedt, 1945
  * Navicula mocsarensis Pantocsek, 1892
  * Navicula modesta Cleve-Euler, 1948
  * Navicula modesta Grunow, 1882
  * Navicula modica Hustedt, 1945
  * Navicula moeandrina Cleve, 1893
  * Navicula moenofranconica Lange-Bertalot, 1993
  * Navicula moerckii Foged, 1966
  * Navicula moesta Schmidt in Schmidt & al., 1881
  * Navicula moesta sensu Wolle, 1890
  * Navicula molesta Mann, 1925
  * Navicula molestiformis Hustedt, 1949
  * Navicula mollicula Hustedt, 1945
  * Navicula mollis (W.Smith) Cleve, 1896
  * Navicula mollissima Hustedt, 1962
  * Navicula monela Hohn, 1966
  * Navicula mongolica Skvortzow, 1935
  * Navicula mongolreinhardtii M.B.Edlund & N.Soninkhishing, 2009
  * Navicula monile Ehrenberg, 1840
  * Navicula monita Hustedt, 1966
  * Navicula monmouthiana Grunow in Cleve & Grunow, 1880
  * Navicula monmouthianastodderi Yermoloff, 1918
  * Navicula monoculata Hustedt, 1945
  * Navicula monodi Guermeur, 1954
  * Navicula monodon Brun, 1891
  * Navicula monradii Foged, 1966
  * Navicula montana Moghadam, 1969
  * Navicula montana Schoeman, 1970
  * Navicula montanensis Moghadam, 1969
  * Navicula montisatrae Cholnoky, 1959
  * Navicula mooreana O'Meara, 1872
  * Navicula moorosiana Schoeman, 1973
  * Navicula moralesii D. Metzeltin & H. Lange-Bertalot, 2007
  * Navicula moreii O'Meara, 1876
  * Navicula mormonorum Grunow ex A.Schmidt, 1876
  * Navicula morricei Hanna, 1932
  * Navicula moskalii Metzeltin, Witkowski & Lange-Bertalot, 1996
  * Navicula mossbergensis Cleve-Euler, 1953
  * Navicula mossiana O'Meara, 1876
  * Navicula motschii Meister, 1912
  * Navicula mournei Patrick, 1959
  * Navicula mucicola Hustedt, 1939
  * Navicula mucicoloides Hustedt, 1942
  * Navicula mucosa Meunier, 1915
  * Navicula mucronata Elmore, 1921
  * Navicula mucronula Pantocsek, 1902
  * Navicula muelleri R.E.M. Archibald, 1983
  * Navicula mugadensis Gandhi, 1959
  * Navicula mujibensis Gerloff, Natour & Rivera, 1984
  * Navicula multicopsiforme W. & G.S. West, 1911
  * Navicula multicopsis
  * Navicula multicostata Grunow, 1860
  * Navicula multicostata sensu Schmidt in Schmidt & al., 1875
  * Navicula multigramme M.H.Hohn & Hellerman, 1963
  * Navicula multiperla Nygaard, 1956
  * Navicula multiplex Van Landingham
  * Navicula multipunctata J.Y.Chen & H.Z.Zhu
  * Navicula multiseriata Grunow in Cleve, 1881
  * Navicula multistriata Patrick, 1936
  * Navicula muncki Foged, 1972
  * Navicula munda Janisch in Schmidt & al., 1881
  * Navicula muralibionta Bock, 1970
  * Navicula muraliformis Hustedt, 1949
  * Navicula muralis Grunow, 1880
  * Navicula muraloides Hustedt, 1950
  * Navicula musca sensu Donkin, 1872
  * Navicula muscaeformis Grunow
  * Navicula muscaeformis Pantocsek, 1892
  * Navicula muscatinei Reimer & Lee, 1986
  * Navicula muscerda Hohn, 1961
  * Navicula musciformis Grunow, 1878
  * Navicula muscora J.P.Kociolek & B.Reviers, 1996
  * Navicula muscosa Skvortzow, 1938
  * Navicula mutabilis Gregory, 1855
  * Navicula mutica Grunow, 1860
  * Navicula mutica sensu Rabenhorst, 1848-1860
  * Navicula mutico-rotaeana Brun, 1901
  * Navicula muticoides Hustedt, 1949
  * Navicula muticopsiformis West & G.S.West, 1911
  * Navicula muticopsis Van Heurck, 1909
  * Navicula muzafarovii A.Witkowski & H.Lange-Bertalot, 2012
  * Navicula my Cleve, 1895
  * Navicula nabrona Carter & Denny, 1982
  * Navicula nagbogensis Foged, 1966
  * Navicula nagjae H. Lange-Bertalot & D. Metzeltin, 2006
  * Navicula nakai Skvortzov, 1971
  * Navicula namibica Lange-Bertalot & Rumrich, 1993
  * Navicula nana Ehrenberg, 1862
  * Navicula nana Gregory
  * Navicula nanella Conger, 1924
  * Navicula nansenii Foged, 1964
  * Navicula narinosa Hohn, 1961
  * Navicula nasuta Giffen, 1973
  * Navicula natalensis Cholnoky, 1957
  * Navicula natchikae Boye Petersen, 1946
  * Navicula naumanni Hustedt, 1942
  * Navicula nautica Cholnoky, 1963
  * Navicula naveana Grunow, 1863
  * Navicula navigans Brun in Schmidt & al., 1892
  * Navicula navrongensis Foged, 1966
  * Navicula nebulosa (Meneghini) Grunow, 1880
  * Navicula nebulosa Gregory, 1857
  * Navicula nebulosa Manguin in Bourrelly & Manguin, 1952
  * Navicula neglecta Karsten, 1899
  * Navicula neglecta Krasske, 1929
  * Navicula neglecta Kützing, 1844
  * Navicula neidioides Manguin in Bourrelly & Manguin, 1952
  * Navicula nemoris M.H.Hohn & Hellerman, 1963
  * Navicula neocaledonica Manguin, 1962
  * Navicula neocomplanata Hustedt, 1962
  * Navicula neocruciata De Toni, 1891
  * Navicula neogena Pantocsek, 1892
  * Navicula neoiridis
  * Navicula neomundana (Lange-Bert. & Rumrich) Lange-Bert., Jarlman & Van de Vijver in Van de Vijver & Lange-Bertalot, 2009
  * Navicula neoplicata Hustedt, 1962
  * Navicula neoreversa VanLandingham, 1975
  * Navicula neoseptentrionalis VanLandingham, 1971
  * Navicula neoventricosa Hustedt F., 1964
  * Navicula neowiesneri Chudaev & Kulikovskiy, 2016
  * Navicula nervosa Brebisson (in litt.?) ex Kutzing, 1849
  * Navicula netroformis Andrews, 1971
  * Navicula neumayeri Janisch in Schmidt & al., 1876
  * Navicula neumayeriana Pantocsek, 1905
  * Navicula neumayerii Pantocsek, 1892
  * Navicula neupaueri Pantocsek, 1886
  * Navicula nezsideriana Pantocsek, 1912
  * Navicula niceaensis H. Peragallo, 1888
  * Navicula nicobarica Grunow, 1863
  * Navicula nicolai Pantocsek, 1902
  * Navicula nidulans Cleve, 1891
  * Navicula nielsfogedii J.C.Taylor & Cocquyt, 2016
  * Navicula nienta J.R.Carter, 1966
  * Navicula nigra Thum's slides
  * Navicula nigri De Notaris in De Notaris & Baglietto, 1872
  * Navicula nigricans Pantocsek, 1892
  * Navicula nigrii De Notaris emend Granetti, 1968
  * Navicula nimbus M.H.Hohn & Hellerman, 1963
  * Navicula niobrara Andrews, 1970
  * Navicula nipkowii Meister, 1932
  * Navicula nippon Skvortzow, 1936
  * Navicula nipponica (Skvortzov) Lange-Bertalot, 1993
  * Navicula nitida Smith ex Gregory
  * Navicula nitrifuga Cholnoky, 1964
  * Navicula nitrophila J.B.Petersen, 1928
  * Navicula nitzschii Ehrenberg, 1837
  * Navicula nivalis Ehrenberg, 1853
  * Navicula nivaloides W.Bock, 1962
  * Navicula nivellis Fusey, 1953
  * Navicula nivorum M.Peragallo
  * Navicula nobilis Kützing
  * Navicula nodosa Schmidt in Schmidt & al., 1876
  * Navicula nodosa sensu Neupauer, 1867
  * Navicula nodulosa (Brébisson) Kützing
  * Navicula nolens Simonsen, 1959
  * Navicula nolensoides Bock, 1970
  * Navicula nonana Cholnoky, 1966
  * Navicula nootkana Bory, 1827
  * Navicula norae Metzeltin, Lange-Bertalot & García-Rodríguez, 2005
  * Navicula nordenskioeldi Foged, 1964
  * Navicula nordstedtiana Grunow in Cleve & Möller, 1879
  * Navicula normalis Hustedt, 1955
  * Navicula normaloides Cholnoky, 1968
  * Navicula normanni Rebenhorst
  * Navicula northumbrica Donkin, 1861
  * Navicula northumricaeformis M. Peragallo in Héribaud & al., 1920
  * Navicula norwegica Ehrenberg, 1840
  * Navicula notabilis Pantocsek, 1889
  * Navicula notabilis sensu Pantocsek, 1902
  * Navicula notanda Cleve-Euler, 1953
  * Navicula notanda Østrup, 1913
  * Navicula notha Wallace, 1960
  * Navicula novadecipiens Hustedt, 1966
  * Navicula novaeguineaensis Tempère in Brun & al., 1891
  * Navicula novaeseelandiae Hustedt, 1964
  * Navicula novaesiberica Lange-Bertalot, 1993
  * Navicula nsutaensis Foged, 1966
  * Navicula nubicola Grunow in Van Heurck, 1880
  * Navicula nubila Manguin, 1964
  * Navicula nuda Pantocsek, 1889
  * Navicula nugalis M.H.Hohn & Hellerman, 1963
  * Navicula nugax W. Smith in Greville, 1855
  * Navicula nummularia Greville, 1859
  * Navicula nummularioides M. Peragallo in Tempère & Peragallo, 1908
  * Navicula nunguaensis Foged, 1966
  * Navicula nunivakiana Patrick & Freese, 1961
  * Navicula nutata Carter & Denny, 1982
  * Navicula nuwukiana Patrick & Freese, 1961
  * Navicula ny Cleve, 1894
  * Navicula nyella Hustedt, 1964
  * Navicula nympharum Hustedt in Schmidt & al., 1936
  * Navicula o'mearii
  * Navicula oamaruensis Grunow in Schmidt & al., 1888
  * Navicula oamaruensis Schrader, 1969
  * Navicula obdurata Hohn & Hellermann, 1963
  * Navicula oberohensis Hustedt, 1954
  * Navicula obesa Otto Müller, 1910
  * Navicula obiecta Cholnoky, 1964
  * Navicula obligata Hustedt, 1966
  * Navicula obliqua Ehrenberg in Ralfs in Pritchard, 1861
  * Navicula obliqua Turpin, 1816-1829
  * Navicula oblique striata Schmidt in Schmidt & al., 1877
  * Navicula oblita Mereschkowsky, 1902
  * Navicula oblonga (Kützing) Kützing, 1844 †
  * Navicula oblonga Ehrenberg, 1843
  * Navicula oblonga Neupauer, 1867
  * Navicula oblonga Østrup, 1910
  * Navicula oblongella sensu Grunow, 1860
  * Navicula oblongiformis Hustedt in Schmidt & al., 1934
  * Navicula oblongopunctata Zakrzewski, 1934
  * Navicula obscura Hustedt, 1937
  * Navicula obscura Hustedt, 1942
  * Navicula obscura Pantocsek, 1909
  * Navicula observabilis Heiden & Kolbe, 1928
  * Navicula observanda Simonsen, 1959
  * Navicula obsidialis Hustedt, 1942
  * Navicula obsoleta Hustedt, 1942
  * Navicula obstinata Krasske, 1939
  * Navicula obtecta I.Jüttner & E.J.Cox
  * Navicula obtusa Bory, 1824
  * Navicula obtusa Bory, 1827
  * Navicula obtusa Ehrenberg, 1843
  * Navicula obtusa W.Smith, 1853
  * Navicula obtusangula Hustedt, 1942
  * Navicula obtusata Karajeva, 1964
  * Navicula obtuseprotracta Hustedt, 1966 †
  * Navicula obtuserostrata Hustedt, 1961
  * Navicula ocalli Hohn, 1961
  * Navicula occasa Giffen, 1975
  * Navicula occidentalis Cleve, 1894
  * Navicula occulta Krasske, 1929
  * Navicula ocellata Mann, 1925
  * Navicula ocellata Skvortzov
  * Navicula ocellata Østrup, 1904
  * Navicula ochridana Hustedt, 1945
  * Navicula octavosignata Salah, 1953
  * Navicula oculata Meunier, 1910
  * Navicula oculiformis Hustedt, 1955
  * Navicula oculus Østrup, 1897
  * Navicula odiosa Wallace, 1960
  * Navicula oerensis Cleve-Euler, 1953
  * Navicula oestrupi Cleve, 1896
  * Navicula oestrupi Heiden in Schmidt & al., 1905
  * Navicula oestrupii Héribaud in Héribaud & al., 1920
  * Navicula oestrupii Pantocsek, 1908
  * Navicula oestrupioides Hustedt, 1961
  * Navicula oetzvallensis H. Lange-Bertalot in Werum & Lange-Bertalot, 2004
  * Navicula ognjanovae Z.Levkov & D.Metzeltin, 2007
  * Navicula ohiensis Ehrenberg, 1856
  * Navicula okawangoi Cholnoky, 1966
  * Navicula okunoi Hustedt, 1966
  * Navicula olgae Pantocsek, 1902
  * Navicula oliffii Cholnoky, 1956
  * Navicula oligotraphenta Lange-Bertalot & Hofmann, 1993
  * Navicula olivacea Leuduger-Fortmorel, 1879
  * Navicula olivieri Héribaud, 1903
  * Navicula omearae Gogorev, 2018
  * Navicula omega Cleve, 1893
  * Navicula omegopsis Hustedt, 1944
  * Navicula omicron Cleve, 1895
  * Navicula omissa Hustedt, 1945
  * Navicula omitta Pantocsek, 1913
  * Navicula omphalia Ehrenberg, 1844 (1845)
  * Navicula onoensis Okuno, 1952
  * Navicula opaia Schrader, 1969
  * Navicula opalensis K.E. Lohman, 1957
  * Navicula ophiocephala Cleve & Grove, 1891
  * Navicula opiei Manguin ex Kociolek & Reviers, 1996
  * Navicula opima Grunow, 1867
  * Navicula opimoides Cholnoky, 1959
  * Navicula opportuna Hustedt, 1950
  * Navicula oppressa Hustedt, 1952
  * Navicula oppugnata Hustedt, 1945
  * Navicula optima Hanna, 1932
  * Navicula opuntioides Simonsen, 1959
  * Navicula oranensis A. Schmidt
  * Navicula orbiculata Patrick, 1959
  * Navicula orbis J.R.Carter, 1981
  * Navicula orbita Carter, 1966
  * Navicula orcula Cholnoky, 1963
  * Navicula ordinaria Hustedt, 1950
  * Navicula ordinata Brébisson ex Ralfs in Pritchard, 1861
  * Navicula oregonensis Hustedt, 1966
  * Navicula orellana Hohn, 1966
  * Navicula orensis A. Cleve, 1953
  * Navicula oribica Cholnoky, 1960
  * Navicula orientata Karajeva, 1964
  * Navicula oris Zanon, 1949
  * Navicula ornata A.W.F.Schmidt
  * Navicula orphei Pantocsek, 1905
  * Navicula orthoneoides Hustedt, 1955
  * Navicula ortolanae Hanna & Grant, 1926
  * Navicula orvinii Foged, 1964
  * Navicula oscitans A.W.F.Schmidt
  * Navicula osculata Ehrenberg, 1842
  * Navicula osculifera Cleve Ms. in Tempère & Peragallo, 1889-1895
  * Navicula ostenfeldii Ostrup
  * Navicula osterosa Giffen, 1976
  * Navicula ostii Cholnoky, 1963
  * Navicula ostracodarum Pantocsek, 1892
  * Navicula ostrearia Bory, 1827
  * Navicula ostrearia Bory, 1831
  * Navicula ostrearia Kützing, 1849
  * Navicula ostrobottnica Cleve-Euler, 1939
  * Navicula ostrogothica Cleve-Euler, 1953
  * Navicula ostrupii Héribaud in Héribaud & al., 1920
  * Navicula oswaldii Janisch, 1888
  * Navicula ovalis Hilse, 1875
  * Navicula ovalis Naegeli in Kutzing, 1849
  * Navicula ovalis W.Smith, 1853
  * Navicula ovata M. Peragallo
  * Navicula ovata M. Peragallo in Héribaud, 1893
  * Navicula oviformis Cleve, 1895
  * Navicula ovulum Grunow, 1860
  * Navicula ovulum Schmidt, 1874
  * Navicula ovumpaschale Schmidt in Schmidt & al., 1875
  * Navicula oxeia Castracane, 1886
  * Navicula oxyphyllum Kützing, 1844
  * Navicula oxyptera Kützing, 1844
  * Navicula oxysphenia Ehrenberg, 1846
  * Navicula paanaensis A.Cleve, 1939
  * Navicula paca Hohn & Hellerm., 1963
  * Navicula pacardi I.Kaczmarska, 1985 †
  * Navicula pacha Schrader, 1969
  * Navicula pachycephala sensu Schumann, 1867
  * Navicula pacifica Grunow, 1867
  * Navicula pacifica Meister, 1937
  * Navicula paeninsulae Cholnoky, 1963
  * Navicula pagesi Héribaud, 1902
  * Navicula pagophila Grunow, 1884
  * Navicula palea Hassall, 1845
  * Navicula palea Skvortzov, 1936
  * Navicula paleacea Pantocsek, 1902
  * Navicula palearctica Hustedt, 1966
  * Navicula palebralis
  * Navicula palestinae Gerloff, Natour & Rivera, 1984
  * Navicula pallescens T.Marsson, 1900
  * Navicula pallida Hustedt, 1962
  * Navicula palludinarum
  * Navicula palpebralis Brébisson ex W.Smith, 1853
  * Navicula palpebrulum Cholnoky, 1961
  * Navicula paludinarum Pantocsek, 1892 †
  * Navicula paludosa Hustedt, 1957
  * Navicula palustris P.Fusey, 1948
  * Navicula pampeana Frenguelli, 1926
  * Navicula panda Lohman & Andrews, 1968
  * Navicula panduriformis Baranov, 1942
  * Navicula pangeroni Leuduger-Fortmorel, 1892
  * Navicula panhalgarhensis H.P.Gandhi, 1959
  * Navicula pannonica Grunow, 1860
  * Navicula pannosa Frenguelli, 1953
  * Navicula pantocseki Hajós, 1968
  * Navicula pantocsekiana De Toni, 1891
  * Navicula papilio D.E. Kellog, M. Stuiver; T.B. Kellogg & G.H. Denton, 1980
  * Navicula papilioarea A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
  * Navicula papillifera O'Meara, 1876
  * Navicula papula A.W.F.Schmidt, 1875
  * Navicula parabilis Hohn & Hellerman, 1963
  * Navicula paracari Lange-Bertalot, 1993
  * Navicula paradoxa Ehrenberg, 1843
  * Navicula paradoxa Skvortzow, 1937
  * Navicula parahasta Lange-Bertalot & Miho, 2001
  * Navicula parallela Castracane, 1886
  * Navicula parallelistriata Pantocsek, 1889
  * Navicula paranipponica Lange-Bertalot, 1993
  * Navicula paraobesa D.Metzeltin & Z.Levkov, 2007
  * Navicula parapontica A.Witkowski, M.Kulikovskiy, E.Nevrova & H.Lange-Bertalot, 2010
  * Navicula pararabda Schrader, 1969
  * Navicula parasubtilissima H.Kobayasi & T.Nagumo, 1988
  * Navicula paratunkae Boye Petersen, 1946
  * Navicula parca A.Schmidt, 1875
  * Navicula parca sensu Ostrup, 1895
  * Navicula parentum Simonsen, 1959
  * Navicula pargemina G.J.C.Underwood & M.L.Yallop, 1994
  * Navicula parinacota Rumrich & Lange-Bertalot in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
  * Navicula paripinnata Pantocsek, 1892
  * Navicula parmula Brébisson ex Kützing, 1846
  * Navicula parodia Hohn, 1961
  * Navicula parsura Hustedt, 1962
  * Navicula partabgarhensis Gandhi, 1955
  * Navicula parthenopea Peragallo & Peragallo, 1908
  * Navicula particulus Foged, 1971
  * Navicula partita Mann, 1925
  * Navicula parunculoides Hustedt, 1952
  * Navicula parunculus Hustedt, 1952
  * Navicula parva (Meneghini ex Kutzing) Cleve-Euler, 1953
  * Navicula parva Skvortzow, 1935
  * Navicula parvipendata Cholnoky, 1966
  * Navicula parvula (Grunow) Hustedt, 1909
  * Navicula parvula H.L. Smith, 1878
  * Navicula parvula Ralfs, 1861
  * Navicula parvula sensu Lagerstedt, 1873
  * Navicula pascuorum Cholnoky, 1965
  * Navicula patagonica
  * Navicula patricia Mann, 1925
  * Navicula patrickae Hustedt, 1955
  * Navicula patrina Carter & Denny, 1982
  * Navicula patula W.Smith, 1853
  * Navicula paucis Krasske, 1949
  * Navicula paucivisitata R.M.Patrick, 1959
  * Navicula paul-schulzii Witkowski & Lange-Bertalot
  * Navicula paulseniana J.B.Petersen, 1930
  * Navicula pauper Mann, 1925
  * Navicula paupercula Lange-Bertalot & U.Rumrich
  * Navicula pavida Pantocsek, 1892
  * Navicula pavillardi Hustedt, 1939
  * Navicula pavillardii Hustedt, 1939
  * Navicula paynei Ross, 1972
  * Navicula pectinalis Brébisson in litt., W. Smith, 1856
  * Navicula peculiarisis Salah & Tamas, 1968
  * Navicula pedalis Brun, 1891
  * Navicula pediculus Cleve, 1896
  * Navicula peguenensis Moura, 1963
  * Navicula peisonis Grunow
  * Navicula peisonis sensu Pantocsek, 1902
  * Navicula peisonis sensu Schmidt in Schmidt & al., 1877
  * Navicula pelagi Schmidt in Schmidt & al., 1875
  * Navicula pelagica Cleve, 1896
  * Navicula pellicola Brockmann, 1950
  * Navicula pelliculosa Rabenhorst, 1864
  * Navicula pellucida Karsten, 1905
  * Navicula pellucida O'Meara, 1867
  * Navicula pellucidoides Hustedt, 1962
  * Navicula pellucidula Hustedt
  * Navicula pelta Hohn, 1966
  * Navicula peltoensis A.Cleve, 1934
  * Navicula peltoensis sensu Cleve-Euler, 1953
  * Navicula peltoides Hendey, 1958
  * Navicula pennata A.Schmidt, 1876
  * Navicula pennsylvanica Patrick, 1966
  * Navicula pensacolae Cleve, 1881
  * Navicula penzhica Lupikina & Dolmatova, 1985
  * Navicula peragalli Brun, 1891
  * Navicula peragalli Frenguelli, 1923
  * Navicula perangustissima Y.Li & Metzeltin iin Li & al., 2020
  * Navicula peratomus Hustedt, 1957
  * Navicula peraustralis West & G.S.West, 1911
  * Navicula perducta Pantocsek, 1892
  * Navicula perdurrans Pantocsek, 1902
  * Navicula peregrina (Ehrenberg) Kützing, 1844
  * Navicula peregrina sensu Pantocsek, 1902
  * Navicula peregrinoides A. Cleve(-Euler) in Halden, 1917
  * Navicula peregrinoides D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
  * Navicula peregrinoides Muzafarov, 1952
  * Navicula peregrinopsis H. Lange-Bertalot & A. Witkowski in A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
  * Navicula perelegans Hustedt, 1952
  * Navicula perennis Pantocsek, 1903
  * Navicula perexigua Østrup, 1910
  * Navicula perfida Manguin ex Kociolek & Reviers, 1996
  * Navicula perfidissima Lange-Bertalot, 1989
  * Navicula pergamonensis Foged, 1982
  * Navicula perhibita Hustedt, 1950
  * Navicula perhyalina Cleve-Euler, 1953
  * Navicula peripontica H. Lange-Bertalot & D. Metzeltin, 2006
  * Navicula peripunctata Brun, 1891
  * Navicula perlata Hustedt in Schmidt & al., 1934
  * Navicula perlata Marsson, 1900
  * Navicula perlatoides Hustedt, 1966
  * Navicula perlepida Cleve, 1883
  * Navicula perlepida Grunow, 1884
  * Navicula perlonga Pantocsek, 1889
  * Navicula perlucens Østrup, 1895
  * Navicula perlucida Hustedt, 1937
  * Navicula perminuta Grunow, 1880
  * Navicula perminuta Østrup, 1913
  * Navicula permitis Hustedt, 1945
  * Navicula permulsa Hustedt in Schmidt & al., 1934
  * Navicula perobesa Hustedt, 1934 †
  * Navicula peroblonga D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
  * Navicula peroi Gogorev, 2018
  * Navicula perotettii (Grunow) Grunow, 1877
  * Navicula perotii Patrick & Freese, 1961
  * Navicula perparva Hustedt, 1937
  * Navicula perpendicularis Cleve-Euler, 1953
  * Navicula perpicea M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
  * Navicula perplexa H.Peragallo & M.Peragallo, 1897
  * Navicula perplexoides Hustedt, 1964
  * Navicula perpusilloides J.Y.Chen & H.Z.Zhu
  * Navicula perrhombus Hustedt ex Simonsen
  * Navicula perrostrata Hustedt in Schmidt & al., 1936
  * Navicula perrotetii
  * Navicula perryana Kitton, 1873
  * Navicula persculpta Pantocsek, 1903
  * Navicula persica Rabenhorst, 1853
  * Navicula persignata Cholnoky, 1968
  * Navicula pertensa Giffen, 1967
  * Navicula pertenuis Hustedt in Schmidt & al., 1934
  * Navicula pertenuis Hustedt, 1934
  * Navicula pertinax Cholnoky, 1960
  * Navicula perturbata Jurilj, 1954
  * Navicula pervasta Pantocsek, 1892
  * Navicula perventralis Hustedt, 1937
  * Navicula peterseni Hustedt, 1937
  * Navicula petersenii Hustedt, 1937
  * Navicula peticolasii M.Peragallo, 1909
  * Navicula petilina Carter & Denny, 1982
  * Navicula petitiana Grunow in Cleve, 1881
  * Navicula petrmarvanii Falasco & Ector, 2009
  * Navicula petrovii E.Nevrova; A.Witkowski, J.P.Kociolek & H.Lange-Bertalot, 2014
  * Navicula petrovskae Z.Levkov & S.Krstic, 2007
  * Navicula peudolucidula Guermeur, 1954
  * Navicula peysonis
  * Navicula pfitzeriana O'Meara, 1876
  * Navicula pfitzeriana O. Witt
  * Navicula phalangium Pantocsek, 1892
  * Navicula phantasma Hohn, 1966
  * Navicula phi Cleve, 1895
  * Navicula philippina Skvortzow, 1937
  * Navicula philippinarum Mann, 1925
  * Navicula philippinica De Toni, 1891
  * Navicula philopena Ehrenberg
  * Navicula phyllepta Kützing, 1844
  * Navicula phylleptosoma Lange-Bertalot, 1999
  * Navicula phylleptosomaformis Seddon & Witkowski, 2011
  * Navicula phyllophaena Ehrenberg, 1872
  * Navicula pi Cleve, 1893
  * Navicula picea M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
  * Navicula picta Ehrenberg, 1835
  * Navicula pieli Voigt, 1949
  * Navicula pierre-comperei H.Lange-Bertalot & G.Hofmann, 2014
  * Navicula pileda Gregory, 1856
  * Navicula pinguis Mann, 1907
  * Navicula pinna Chin & Cheng, 1979
  * Navicula pinnata Pantocsek, 1889
  * Navicula pinnularia Meunier, 1910
  * Navicula pinnularioides Østrup
  * Navicula pistillum Bleisch, 1863
  * Navicula pitoti Guermeur, 1954
  * Navicula placentiformis Hustedt, 1944
  * Navicula placentula sensu Pantocsek, 1902
  * Navicula placida A.W.F.Schmidt
  * Navicula placita Grove & Sturt, 1887
  * Navicula plagiostoma Grunow, 1879
  * Navicula plana Hustedt in Schmidt & al., 1936
  * Navicula planamembranacea Hendey, 1964
  * Navicula planiceps Cleve-Euler, 1953
  * Navicula platalea Ehrenberg, 1842
  * Navicula plathi Brockmann, 1950
  * Navicula platycephala Otto Müller, 1899
  * Navicula platystoma Ehrenberg, 1838
  * Navicula platyventris Meister, 1934 (1935)
  * Navicula plaudinarum
  * Navicula plausibilis Hustedt, 1966
  * Navicula pletura Hohn, 1961
  * Navicula pleuronectes (Ehrenberg) De Toni, 1891
  * Navicula pleurophora Kützing, 1844
  * Navicula pleurostauroides Frenguelli, 1945
  * Navicula pleurostaurum Mann, 1907
  * Navicula plicata Bodeanu, 1976
  * Navicula plicata Donkin, 1873
  * Navicula plicatoides Hustedt, 1962
  * Navicula plicatula Grunow in Cleve & Möller, 1878
  * Navicula plitvicensis Hustedt, 1945
  * Navicula plumbicolor O'Meara, 1876
  * Navicula pluscula Cholnoky, 1960
  * Navicula plutonia O'Meara, 1872
  * Navicula poconoensis Patrick, 1945
  * Navicula podolica Gaponov, 1915
  * Navicula podzorskii Lange-Bertalot, 1993
  * Navicula poirieri Lauby, 1910
  * Navicula polae Heiden, 1903
  * Navicula polaris Lagerstedt, 1873
  * Navicula poli Nicolucci, 1842
  * Navicula polita Brun, 1891
  * Navicula polyconfusa VanLandingham, 1975
  * Navicula polygibba Pantocsek, 1892
  * Navicula polygona Brun, 1891
  * Navicula polymorpha Lagerstedt, 1873
  * Navicula polyonca Brébisson, 1849
  * Navicula polyplexa VanLandingham, 1975
  * Navicula polyptera Ehrenberg
  * Navicula polysticta Greville, 1859
  * Navicula polystricta
  * Navicula ponticula Giffen, 1970
  * Navicula ponticulus K. McCartney & S.W. Wise Jr., 1990
  * Navicula pontifica Mann, 1925
  * Navicula poretzkiae Korotkevich, 1960
  * Navicula poretzkyi Jouravleva, 1936
  * Navicula porifera Hustedt, 1944
  * Navicula porifera Jurilj, 1957
  * Navicula porrecta (Ehrenberg) Kützing, 1844
  * Navicula porta-aurata A.Witkowski, H.Lange-Bertalot & M.Bak, 2009
  * Navicula portanova Riznyk, 1973
  * Navicula portaregiensis A. Berg, 1952
  * Navicula porticola Cholnoky, 1963
  * Navicula portomontana Cleve, 1894
  * Navicula portomonttana
  * Navicula poseidon Cholnoky, 1968
  * Navicula potzgeri C.W.Reimer, 1961
  * Navicula powellii sensu H. Peragallo, 1888
  * Navicula pozzuoliensis VanLandingham, 1975
  * Navicula praecepta A. Berg in Berg & Hessland, 1949
  * Navicula praeclara Pantocsek, 1892
  * Navicula praedicabilis Simonsen, 1959
  * Navicula praedii Cholnoky & Claus, 1961
  * Navicula praeflua Pantocsek, 1892
  * Navicula praegnans Skuja, 1937
  * Navicula praerupta Hustedt, 1944
  * Navicula praesecta Schmidt, 1874
  * Navicula praestes Schmidt in Schmidt & al., 1875
  * Navicula praestoeensis M.Møller, 1950
  * Navicula praeterita Hustedt, 1945
  * Navicula praetexta Ehrenberg, 1860
  * Navicula praetexta sensu Truan y Luard & Witt, 1888
  * Navicula pragma M.H.Hohn & Hellerman, 1963
  * Navicula pragmatica Giffen, 1967
  * Navicula prespanensis Z.Levkov & D.Metzeltin, 2007
  * Navicula pressa Pantocsek, 1892
  * Navicula primigena
  * Navicula primordialis Pantocsek, 1892
  * Navicula prinslooii Schoeman, 1969
  * Navicula prisca Schmidt in Schmidt & al., 1875
  * Navicula pristina Afanas'eva in Afanas'eva & Gleser, 1986
  * Navicula pristiophora Janisch in Schmidt & al., 1881
  * Navicula probabilis Schmidt in Schmidt & al., 1877
  * Navicula problematica Azpeitia, 1911
  * Navicula problematica Cleve-Euler, 1915
  * Navicula problematica Østrup, 1908
  * Navicula proboscoidea Heiden, 1900
  * Navicula procera Pantocsek, 1889
  * Navicula prodiga Mann, 1907
  * Navicula producta (Grunow) Forti, 1902
  * Navicula producta Brébisson
  * Navicula producta Pantocsek, 1905
  * Navicula producta Ralfs in Pritchard, 1861
  * Navicula producta sensu Dippel, 1905
  * Navicula prominula Schmidt in Schmidt & al., 1875
  * Navicula promota Archibald, 1971
  * Navicula propinqua Cleve-Euler, 1953
  * Navicula propinqua Schmidt in Schmidt & al., 1875
  * Navicula proserpinae Pantocsek
  * Navicula proserpinae Rabenhorst, 1864
  * Navicula protearum Cholnoky, 1959
  * Navicula protracta (Grunow) Cleve, 1894
  * Navicula protracta Grunow, 1880
  * Navicula protracta Kustner, 1914
  * Navicula protracta sensu Hustedt, 1950
  * Navicula protractoides Hustedt, 1957
  * Navicula protrudens Mann, 1925
  * Navicula proveniens Cholnoky, 1961
  * Navicula proxima Janisch in Schmidt & al., 1881
  * Navicula pseudacceptata H.Kobayasi, 1986
  * Navicula pseudagrestis Lund, 1946
  * Navicula pseudagrestis sensu Foged, 1958
  * Navicula pseudanglica Cleve-Euler, 1948
  * Navicula pseudanglica Lange-Bertalot, 1985
  * Navicula pseudannulata Frenguelli, 1941
  * Navicula pseudatomus Lund, 1946
  * Navicula pseudo-libellus Attheya
  * Navicula pseudo-libellus T. West, 1860
  * Navicula pseudo-schoenfeldii Skvortzow, 1971
  * Navicula pseudoacceptata Kobayasi in Kobayasi & Mayama, 1986
  * Navicula pseudoaffinis Mann, 1925
  * Navicula pseudoanglica Foged & Moller, 1968
  * Navicula pseudoantonii Z.Levkov & D.Metzeltin, 2007
  * Navicula pseudoapproximata Hendey, 1958
  * Navicula pseudoarvensis Hustedt, 1942
  * Navicula pseudoaspera Pantocsek, 1892
  * Navicula pseudobrasiliana A.Tuji, 2003
  * Navicula pseudobrehmii Hustedt, 1966
  * Navicula pseudobrevissima Manguin in Bourrelly & Manguin, 1952
  * Navicula pseudobrockmannii Manguin, 1964
  * Navicula pseudobryophila Hustedt, 1942
  * Navicula pseudocari Krasske, 1939
  * Navicula pseudocarinifera Manguin, 1960
  * Navicula pseudocarminata Manguin, 1952
  * Navicula pseudocincta De Toni, 1891
  * Navicula pseudocitrus Manguin in Bourrelly & Manguin, 1954
  * Navicula pseudoclamans J.R.Carter, 1981
  * Navicula pseudoclavata Mann, 1925
  * Navicula pseudoclementis Hustedt, 1952
  * Navicula pseudococconeiformis Poretzky, 1925
  * Navicula pseudocomides Hendey, 1964
  * Navicula pseudoconcamerata Maillard, 1978
  * Navicula pseudoconfervacea Manguin, 1952
  * Navicula pseudoconstans Foged, 1968
  * Navicula pseudocontenta Manguin in Bourrelly & Manguin, 1952
  * Navicula pseudocrassirostris Hustedt, 1961
  * Navicula pseudocryptocephala Foged, 1958
  * Navicula pseudocurta Cholnoky, 1955
  * Navicula pseudocurta Manguin, 1962
  * Navicula pseudocuspidata Gandhi
  * Navicula pseudodahurica H. Kobayasi in Kobayasi & al., 1977
  * Navicula pseudodemararae Hustedt in Schmidt & al., 1930
  * Navicula pseudodemerae
  * Navicula pseudodicephala Fritsch & Rich, 1929
  * Navicula pseudodispensata Manguin, 1964
  * Navicula pseudodispersa Schrader, 1969
  * Navicula pseudodissipata H. Kobayasi in Kobayasi & al., 1977
  * Navicula pseudoexilissima Hustedt, 1962
  * Navicula pseudofaceta Guermeur, 1954
  * Navicula pseudoforcipata Hustedt, 1942
  * Navicula pseudofossalis Krasske, 1948
  * Navicula pseudofrickia Patrick, 1959
  * Navicula pseudofrugalis H.P. Gandhi, 1998
  * Navicula pseudofusca Pantocsek, 1886
  * Navicula pseudogamma Giffen, 1967
  * Navicula pseudogastrum Aleem, 1958
  * Navicula pseudogemmata Pantocsek, 1892
  * Navicula pseudoglacialis
  * Navicula pseudogracilis Hustedt, 1927 †
  * Navicula pseudogracilis Skvortzow, 1937
  * Navicula pseudographa Manguin, 1952
  * Navicula pseudogrimmei Compère, 1970
  * Navicula pseudohalophila Cholnoky, 1960
  * Navicula pseudohamulata Guermeur, 1964
  * Navicula pseudohasta E.Manguin ex Kociolek & Reviers, 1996
  * Navicula pseudohasta Z. Levkov, M.B. Edlund & T. Nakov, 2008
  * Navicula pseudohochstetteri M. Peragallo, 1929
  * Navicula pseudohumilis Amossé, 1932
  * Navicula pseudoincerta Giffen, 1970
  * Navicula pseudoinflata Giffen, 1975
  * Navicula pseudoingrata Manguin, 1964
  * Navicula pseudoinsociabilis Manguin in Bourrelly & Manguin, 1949
  * Navicula pseudokotschyi Lange-Bertalot, 1985
  * Navicula pseudokrasskei Cholnoky, 1954
  * Navicula pseudokryokonites M. Peragallo, 1921
  * Navicula pseudolacertosa Cholnoky, 1966
  * Navicula pseudolagerheimi H.P.Gandhi, 1967
  * Navicula pseudolanceolata Lange-Bertalot, 1980
  * Navicula pseudolapidosa Manguin, 1964
  * Navicula pseudolinearis Hustedt, 1922
  * Navicula pseudolitoricola Hakansson, 1980
  * Navicula pseudolucidula Guermeur, 1954
  * Navicula pseudomastogloia Fontell in Ms. ex Cleve-Euler, 1953
  * Navicula pseudomediopartita Schrader, 1969
  * Navicula pseudomembranacea Cleve-Euler, 1952
  * Navicula pseudomenisculus J.R.Carter, 1981
  * Navicula pseudominuscula Fusey, 1950
  * Navicula pseudomitis Hustedt, 1950
  * Navicula pseudomuraliformis Simonsen, 1987
  * Navicula pseudomuralis Hustedt, 1937
  * Navicula pseudomutica Hustedt, 1955
  * Navicula pseudomuticopsis Stone in McLaughlin & Stone, 1986
  * Navicula pseudonaumannii Manguin, 1964
  * Navicula pseudonivalis Bock, 1970
  * Navicula pseudonony Hustedt, 1955
  * Navicula pseudony Hustedt, 1955
  * Navicula pseudopalpebralis Hendey, 1964
  * Navicula pseudoparunculus Hustedt, 1952
  * Navicula pseudopelliculosa Manguin, 1952
  * Navicula pseudopima Hustedt, 1954
  * Navicula pseudoplacentula Foged & Moller, 1968
  * Navicula pseudoporifera Hustedt, 1952
  * Navicula pseudoppugnata Lange-Bertalot & Miho, 2001
  * Navicula pseudoquadratarea Heiden in Schmidt & al., 1905
  * Navicula pseudoramphoides Stone in McLaughlin & Stone, 1986
  * Navicula pseudoreinhardti Patrick, 1959
  * Navicula pseudoretusa Peragallo & Peragallo, 1897
  * Navicula pseudorhynchocephala Poretzky ex Proschkina-Lavrenko, 1950
  * Navicula pseudorhynchocephala Poretzky, 1953
  * Navicula pseudorthoneoides Foged, 1975
  * Navicula pseudorupicola Fusey, 1953
  * Navicula pseudosalinarum Giffen, 1975
  * Navicula pseudoschumanniana Hustedt, 1914
  * Navicula pseudoscutiformis Hustedt, 1930
  * Navicula pseudosemilyrata R.Simonsen, 1959
  * Navicula pseudoseminulum Skvortzow, 1935
  * Navicula pseudosepta Patrick, 1961
  * Navicula pseudosilicula Hustedt
  * Navicula pseudosiliculaoides Foged, 1968
  * Navicula pseudostauropteroides Fritsch & Rich, 1929
  * Navicula pseudostrearia Aleem, 1973
  * Navicula pseudostundlii Barber & Carter, 1971
  * Navicula pseudosubtilis Fusey, 1964
  * Navicula pseudosubtilissima Manguin in Bourrelly & Manguin, 1952
  * Navicula pseudosydowii Schoeman & Archibald, 1988
  * Navicula pseudotamnaena Guermeur, 1954
  * Navicula pseudotantula Guermeur, 1954
  * Navicula pseudotemeraria Schoeman, 1973
  * Navicula pseudotenelloides Cholnoky, 1955
  * Navicula pseudotenelloides Krasske, 1938
  * Navicula pseudotenelloides Maillard, 1966
  * Navicula pseudotenera Manguin, 1962
  * Navicula pseudothienemanni H.P.Gandhi, 1967
  * Navicula pseudotuscula Hustedt, 1943
  * Navicula pseudotuscula sensu Brockman, 1950
  * Navicula pseudoventosa Schoeman, 1973
  * Navicula pseudoventralis Hustedt, 1936
  * Navicula pseudowiesneri Chudaev & Kulikovskiy, 2016
  * Navicula psychrophila Grunow
  * Navicula pterophena (Ehrenberg) De Toni, 1891
  * Navicula puacivistata Patrick, 1959
  * Navicula puchella sensu Heiden & Kolbe, 1928
  * Navicula pudens Mann, 1925
  * Navicula pudibundus Foged, 1971
  * Navicula pudica Cholnoky, 1959
  * Navicula puella A.Schmidt, 1875
  * Navicula puella Peragallo & Peragallo, 1897
  * Navicula puella Schumann, 1867
  * Navicula pugio Mann, 1925
  * Navicula pulchella Heiden
  * Navicula pulcherrima Leuduger-Fortmorel ex Tempère & Peragallo, 1915
  * Navicula pulchra Gregory, 1856
  * Navicula pulchripora Kaczmarska & Chan, 1995
  * Navicula pullus Hustedt, 1955
  * Navicula pulverea Cholnoky, 1963
  * Navicula pulverentula Woodhead & Tweed, 1960
  * Navicula pulvulenta Mann, 1925
  * Navicula pumilio Ehrenberg, 1841 †
  * Navicula punctata O'Meara, 1872
  * Navicula punctata W. Arnott in litt. ex Brébisson, 1870
  * Navicula punctatula
  * Navicula puncticulata Skvortzov, 1976
  * Navicula punctifera Hustedt, 1952
  * Navicula punctigera Hustedt, 1955
  * Navicula punctulata Ehrenberg, 1842
  * Navicula punctulata W.Smith, 1853
  * Navicula pungens Cleve-Euler, 1953
  * Navicula pupilla Manguin in Bourrelly & Manguin, 1952
  * Navicula pupula Bristol, 1920
  * Navicula pupuloides Cholnoky, 1955
  * Navicula pupuloides Guermeur, 1954
  * Navicula puschii Missuna, 1914
  * Navicula pusilla sensu Donkin, 1870
  * Navicula pusilloides Compère, 1967
  * Navicula pusio sensu Mayer, 1919
  * Navicula pusioides Foged, 1981
  * Navicula pygmaea Frenguelli, 1923
  * Navicula pygmaea Kützing, 1849
  * Navicula pygmaeformis Kobayasi, 1968
  * Navicula pyrenaica W. Smith, 1857 (1858)
  * Navicula quadrangulis H. Kobayasi, 1964
  * Navicula quadrata Gregory, 1856
  * Navicula quadricostata Ehrenberg, 1838
  * Navicula quadrifasciata Ehrenberg, 1840
  * Navicula quadrilineata Grunow, 1879
  * Navicula quadrimaculata Manguin, 1964
  * Navicula quadripartita Hustedt, 1934
  * Navicula quadripedis Cleve-Euler, 1952
  * Navicula quadripuctata Hustedt, 1950
  * Navicula quadriseriata Cleve & Grunow in Cleve, 1881
  * Navicula quadrisinuata Quint in Hustedt, 1930
  * Navicula quadrisulcata Grunow, 1867 (1870)
  * Navicula quadriundulata Hustedt in Schmidt & al., 1934
  * Navicula quadriundulata Manguin, 1941
  * Navicula quadriundulata Meister, 1932
  * Navicula quaesita Cholnoky, 1968
  * Navicula quarnerensis Grunow
  * Navicula quarnerensoides Hustedt, 1961
  * Navicula quasidisjuncta Lange-Bertalot & U.Rumrich
  * Navicula quaterna A. Berg, 1952
  * Navicula quaternaria D.E. Kellogg, M. Stuiver, T.B. Kellogg & G.H. Denton, 1980
  * Navicula quechua Lange-Bertalot & U.Rumrich
  * Navicula quercyana Guermeur & Manguin, 1953
  * Navicula quincunx Cleve, 1891
  * Navicula quinquenodis Grunow, 1860
  * Navicula quintiana Pantocsek & Greguss in Greguss, 1913
  * Navicula quodest Cholnoky, 1960
  * Navicula rabenhorstiana Hilse in Rabenhorst, 1859
  * Navicula rabenhorstii Ralfs in Pritchard, 1861
  * Navicula radians Héribaud-Joseph, 1903 †
  * Navicula radiata Leuduger-Fortmorel, 1892
  * Navicula radiopunctata Hustedt in Schmidt & al., 1934
  * Navicula radiosa Kützing, 1844
  * Navicula radiosaeformis Manguin in Bourrelly & Manguin, 1952
  * Navicula radiosafallax Lange-Bertalot, 1993
  * Navicula radiosiola Lange-Bertalot, 1993
  * Navicula radiostriata Hustedt, 1936
  * Navicula rainierensis Sovereign, 1963
  * Navicula rajmundii A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
  * Navicula rakowskae Lange-Bertalot, 2001
  * Navicula ramingensis Handmann, 1913
  * Navicula ramosissima (C.Agardh) Cleve, 1895
  * Navicula ramosissimoides Gandhi, 1970
  * Navicula ramphoides Pantocsek, 1889
  * Navicula rancurellii Amossé, 1970
  * Navicula rapsonii Cholnoky, 1959
  * Navicula rara Ehrenberg, 1854
  * Navicula rara Frenguelli, 1938
  * Navicula rara Hustedt, 1934
  * Navicula rarissima Bennett & Kociolek in Kociolek & al., 2014
  * Navicula rasa Pantocsek, 1913
  * Navicula rattrayi Pantocsek, 1889
  * Navicula rauhii Manguin, 1964
  * Navicula rautenbachiae Cholnoky, 1957
  * Navicula ravinae Cholnoky, 1960
  * Navicula recava Hohn & Hellerman, 1963
  * Navicula recognita Torka, 1933
  * Navicula recondita Hustedt, 1942
  * Navicula recta Brun & Héribaud in Héribaud, 1893
  * Navicula rectalineata Meister, 1934 (1935)
  * Navicula rectangularis
  * Navicula rectangulata Gregory, 1857
  * Navicula recurvata Gran, 1900
  * Navicula regata Hanna & Grant, 1926
  * Navicula regelii Krieger, 1944
  * Navicula regressa Hustedt in Schmidt & al., 1934
  * Navicula regula Grunow & Cleve
  * Navicula regularis Hustedt
  * Navicula reichardtiana Lange-Bertalot, 1989
  * Navicula reichardtii Grunow, 1880
  * Navicula reihardtii
  * Navicula reimeri Gandhi, 1970
  * Navicula reimeri Patrick & Freese, 1961
  * Navicula reimerites VanLandingham, 1964
  * Navicula reinhardtii (Grunow) Grunow in Van Heurck, 1880
  * Navicula reinickeana Rabenhorst, 1859
  * Navicula reissii Lee, Reimer & McEnery, 1980
  * Navicula relicta McCall, 1933
  * Navicula remota Grunow, 1880
  * Navicula renauldi Héribaud-Joseph
  * Navicula repentina Krasske, 1949
  * Navicula resecta J.R.Carter, 1981
  * Navicula reservata Cholnoky, 1968
  * Navicula residua Schmidt in Schmidt & al., 1876
  * Navicula restituta A.Schmidt ex Cleve & Moller, 1878
  * Navicula reticulata Grunow, 1867
  * Navicula reticulata Mereschkowsky, 1901
  * Navicula reticuloradiata Tempère & Brun in Brun & Tempère, 1889
  * Navicula retinenda Schmidt in Schmidt & al., 1897
  * Navicula retracta Meister, 1937
  * Navicula retrica Carter & Denny, 1982
  * Navicula retrocurvata J.R.Carter ex R.Ross & P.A.Sims, 1978
  * Navicula retrostauros Mann, 1925
  * Navicula retusa H. Lange-Bertalot & K. Bonik, 1976
  * Navicula retusa sensu Cleve & Grunow, 1880
  * Navicula retusa sensu Van Heurck, 1885
  * Navicula reusii Pantocsek, 1892
  * Navicula reversa Hustedt, 1952
  * Navicula reversa Mann, 1925
  * Navicula rho Cleve, 1895
  * Navicula rhodana M.H.Hohn & Hellerman, 1963
  * Navicula rhombea Ehrenberg, 1843
  * Navicula rhombica Gregory, 1855 †
  * Navicula rhombica sensu Donkin, 1872
  * Navicula rhombicula Hustedt, 1962
  * Navicula rhombiformis Gandhi, 1959 (1960)
  * Navicula rhombiformis Hustedt, 1944
  * Navicula rhomboidea Castracane, 1878
  * Navicula rhombulus Schumann, 1867
  * Navicula rhombus Petit, 1877
  * Navicula rhynchocephala Kützing, 1844
  * Navicula rhynchocephaloides Frenguelli, 1941
  * Navicula rhynchocephaloides Hustedt in Schmidt & al., 1930
  * Navicula rhynchotella Lange-Bertalot, 1993
  * Navicula ricardae Lange-Bertalot, 2001 †
  * Navicula ricardii Germain, 1981
  * Navicula richardsoniana O'Meara, 1876
  * Navicula ridelii Cleve-Euler, 1953
  * Navicula riediana Lange-Bertalot & Rumrich, 2000
  * Navicula rimosa Ehrenberg, 1838
  * Navicula rimosa Greville, 1866
  * Navicula riojae Cleve
  * Navicula riotecensis Metzeltin & Lange-Bertalot, 1998
  * Navicula ripageriensis Renault, 1903
  * Navicula riparia Hustedt, 1942
  * Navicula riparta Carter, 1966
  * Navicula rivalis M.H.Hohn & Hellerman, 1963
  * Navicula rivularis Hustedt, 1942
  * Navicula rivulensis Patrick & Freese, 1961
  * Navicula rivulorum H. Lange-Bertalot & Rumich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
  * Navicula robertsii Patrick & Freese, 1961
  * Navicula robertsoniana
  * Navicula robusta Ehrenberg, 1840
  * Navicula robusta Grunow, 1877
  * Navicula robusta Pantocsek, 1889
  * Navicula rogallii Hustedt, 1961
  * Navicula rogersii Giffen, 1964
  * Navicula rolandii Wunsam, Witkowski & Lange-Bertalot in Witkowski, Lange-Bertalot & Stachura, 1998
  * Navicula romanowii Pantocsek, 1902
  * Navicula romanum Ehrenberg, 1854
  * Navicula rosenbergii Østrup, 1910
  * Navicula rossi Salah, 1955
  * Navicula rossiana Mayer, 1931
  * Navicula rostellaria Schmidt, 1874
  * Navicula rostellifera O'Meara, 1876
  * Navicula rostelloides Østrup, 1910
  * Navicula rostellum W. Smith, 1856
  * Navicula rostellum sensu Ostrup, 1895
  * Navicula rostochiensis Heiden in Schmidt & al., 1903
  * Navicula rostrata Ehrenberg, 1840
  * Navicula rostrata Frenguelli, 1929
  * Navicula rostrata W. Smith Ms., Gregory, 1856
  * Navicula rotaeana (Rabenhorst) Grunow, 1880
  * Navicula rotesta Carter, 1970
  * Navicula rotula A.Cleve, 1953
  * Navicula rotunda Andrews, 1966
  * Navicula rotunda Hustedt, 1945
  * Navicula rotundata Hantzsch fide Grunow in Van Heurck, 1880
  * Navicula rotundata Hantzsch in Rabenhorst, 1862
  * Navicula rotundella Andrews, 1968
  * Navicula rouxioidea Sheshukova-Poretskaya, 1967
  * Navicula rovignensis Grunow in Cleve & Möller, 1879
  * Navicula rudiformis Hustedt, 1964
  * Navicula rudis Cleve
  * Navicula rufisquiana Guermeur, 1954
  * Navicula rugosa Janisch, 1888
  * Navicula rugula M.H.Hohn & Hellerman, 1963
  * Navicula rumaniensis Hustedt in Schmidt & al., 1934
  * Navicula runtuensis Cholnoky, 1966
  * Navicula rupestris O'Meara, 1876
  * Navicula rupicola Hustedt, 1937
  * Navicula rusticensis Lobban, 1984
  * Navicula ruttneri Hustedt, 1937
  * Navicula sabiniana R.M.Patrick, 1959
  * Navicula sacrophagus H.P.Gandhi ex Karthick, 2020
  * Navicula saeptata Jurilj, 1957
  * Navicula safana Fusey, 1966
  * Navicula sagitta M.H.Hohn & Hellerman, 1963
  * Navicula sahyadrensis Sarode & Kamat, 1984
  * Navicula salaria Patrick & Freese, 1961
  * Navicula salebrosa Cholnoky, 1963
  * Navicula salinaroides Cholnoky, 1963
  * Navicula salinarum Grunow, 1880
  * Navicula salinarum sensu Pantocsek, 1902
  * Navicula salinicola Hustedt, 1939
  * Navicula salsa Patrick & Freese, 1961
  * Navicula salva Schmidt in Schmidt & al., 1876
  * Navicula sambiensis Schumann, 1867
  * Navicula samoensis Grunow, 1877
  * Navicula samrai Salah, 1955
  * Navicula sanctaecrucis Østrup, 1913
  * Navicula sancti caroli Pantocsek, 1902
  * Navicula sancti-naumii Z.Levkov & D.Metzeltin, 2007
  * Navicula sanctibenedicti Pantocsek, 1902
  * Navicula sanctinoberti Lacsny, 1917
  * Navicula sanctithomae Cleve, 1878
  * Navicula sandegrenii Cleve-Euler, 1922
  * Navicula sandriana Grunow, 1863
  * Navicula sandriana sensu Schmidt in Schmidt & al., 1881
  * Navicula sansegana Grunow, 1875
  * Navicula sansomei Foged, 1966
  * Navicula santacrux Brun, 1896
  * Navicula santapauii Suxena & Venkateswarlu, 1968
  * Navicula sapeloensis Williams, 1962
  * Navicula saprophila Lange-Bertalot & Bonik, 1976
  * Navicula sarmatica Schljapina ex Makarova & Kozyrenko, 1966
  * Navicula sarolata J.R.Carter & P.Denny, 1982
  * Navicula satura Schmidt in Schmidt & al., 1876
  * Navicula saugerri
  * Navicula sauvis
  * Navicula savannae Ehrenberg
  * Navicula saxicola E.Manguin ex J.P.Kociolek & B.Reviers, 1996
  * Navicula saxophila W.Bock ex Hustedt, 1966
  * Navicula scabellum Hustedt, 1942
  * Navicula scala Hohn & Hellerman, 1966
  * Navicula scalarifer Brun, 1891
  * Navicula scalpellum Kützing, 1849
  * Navicula scalpia Carter, 1966
  * Navicula scalprum Ehrenberg, 1836
  * Navicula scalprum Gaillon, 1827
  * Navicula scalprum Kützing, 1844
  * Navicula scandinaviae Ehrenberg, 1875 (1876)
  * Navicula scaniae Van de Vijver, Jarlman & Lange-Bert., 2010
  * Navicula scanica Cleve-Euler, 1952
  * Navicula scela Carter & Denny, 1982
  * Navicula schaarschmidtii Pantocsek, 1886
  * Navicula schadei Krasske, 1929
  * Navicula schadeiformis Foged, 1972
  * Navicula schaeferi Hustedt, 1964
  * Navicula schaferi Hustedt In Rabenhorst, 1964
  * Navicula schefterae Lobban, 1986
  * Navicula schilberszkyi Pantocsek
  * Navicula schinzii Brun, 1891
  * Navicula schiracka Skabichevskii, 1936
  * Navicula schirschowii Seczkina, 1956
  * Navicula schizonemoides Kisselev, 1930
  * Navicula schleinitzii Janisch in Schmidt & al., 1881
  * Navicula schmassmanni Hustedt in Schmidt & al., 1934
  * Navicula schmassmanni Hustedt, 1943
  * Navicula schmidti
  * Navicula schmidtiana Grunow in Schmidt & al., 1876
  * Navicula schmidtii Lagerst., 1876
  * Navicula schmidtii O'Meara, 1875
  * Navicula schneideri Grunow, 1878
  * Navicula schoemaniana Foged, 1975
  * Navicula schomburgkorum Ehrenberg, 1845
  * Navicula schonfeldii Hustedt, 1930
  * Navicula schonfeldtii
  * Navicula schonkenii Hustedt, 1955
  * Navicula schroeteri Meister, 1932
  * Navicula schubartii Hustedt, 1952
  * Navicula schuettii Van Heurck
  * Navicula schultzei C.H.Kain
  * Navicula schultzii
  * Navicula schulzii Cleve, 1895
  * Navicula schumannii Nathorst, 1894
  * Navicula schuttii
  * Navicula schwabei Krasske, 1939
  * Navicula schweickerdtii Cholnoky, 1954
  * Navicula schweinfurthi A.W.F.Schmidt, 1876
  * Navicula scintillans Schmidt in Schmidt & al., 1881
  * Navicula scintillans Tempère & Brun in Brun & Tempère, 1889
  * Navicula scintillosa Manguin in Bourrelly & Manguin, 1949
  * Navicula scirpus J.R.Carter, 1981
  * Navicula scita W. Smith, 1857 (1858)
  * Navicula scoliopleura Schmidt in Schmidt & al., 1876
  * Navicula scoliopleuroides Quint in Hustedt, 1930
  * Navicula scopulorum sensu Cleve, 1894
  * Navicula scoresbyi Foged, 1964
  * Navicula scotica A.Schmidt, 1876
  * Navicula scottiae Cholnoky & Claus, 1961
  * Navicula scutelliformis
  * Navicula scutelloides W.Smith, 1856
  * Navicula scutula Hohn, 1961
  * Navicula scutum Schumann, 1862
  * Navicula scutum sensu Cleve-Euler in Backman & Cleve-Euler, 1922
  * Navicula scythica Pantocsek, 1892
  * Navicula secernenda A.W.F.Schmidt, 1876
  * Navicula secreta Pantocsek, 1902
  * Navicula sectilis A.W.F.Schmidt
  * Navicula secura R.M.Patrick, 1959
  * Navicula seductilis A.Schmidt, 1874
  * Navicula seibigiana Lange-Bertalot, 1993
  * Navicula seibigii Lange-Bertalot, 1991
  * Navicula seippiana Lange-Bertalot & Steindorf in Moser, Steindorf & Lange-Bertalot, 1995
  * Navicula sejuncta A.Schmidt, 1874
  * Navicula semen Ehrenberg, 1843
  * Navicula semenoides Hustedt, 1927
  * Navicula semiaperta Hustedt, 1936
  * Navicula semiarea Meister, 1934 (1935)
  * Navicula semicruciata Ehrenberg, 1843
  * Navicula semidecora Brun, 1896
  * Navicula semidiversa Manguin ex Kociolek & Reviers, 1996
  * Navicula semifasciata Østrup, 1918
  * Navicula semihyalina Bock, 1970
  * Navicula semiinflata Østrup, 1895
  * Navicula semilyrata R.Simonsen, 1959
  * Navicula seminoides Cleve & Grove, 1894
  * Navicula seminuda C. Jao & Y.Y. Lee in Jao, Zhu & Y.Y. Lee, 1974
  * Navicula seminuda Meister, 1937
  * Navicula seminularia Cholnoky, 1966
  * Navicula seminuloides Hustedt, 1937
  * Navicula seminulum Ehrenberg, 1842
  * Navicula seminulum sensu Schumann, 1862 (1863)
  * Navicula semipronia Perty, 1849
  * Navicula semipronia Perty, 1852
  * Navicula semistauros Mann, 1925
  * Navicula semistriata Østrup, 1895
  * Navicula semitecta Schmidt, 1874
  * Navicula semivirgata Krasske, 1929
  * Navicula semota Schmidt in Schmidt & al., 1897
  * Navicula senegalensis Ehrenberg, 1854
  * Navicula senegalensis Guermeur, 1954
  * Navicula senjoensis H. Kobayasi in Ando, Haraguchi & H. Kobayasi, 1971
  * Navicula sennenii M. Peragallo in Heribaud & al., 1920
  * Navicula senonquei M. Peragallo, 1921
  * Navicula sentechii Diakonova-Savelieva, 1929
  * Navicula sentelloides Smith
  * Navicula separabilis Schmidt in Schmidt & al., 1875
  * Navicula sepasiensis Foged, 1966
  * Navicula seposita Hustedt, 1942
  * Navicula septata Hustedt
  * Navicula septata Proschkina-Lavrenko, 1963
  * Navicula septataeoides Hustedt, 1966
  * Navicula septenaria Bailey, 1862
  * Navicula septentrionalis (Grunow) Gran, 1908
  * Navicula septentrionalis Cleve, 1896
  * Navicula septentrionalis Østrup, 1897
  * Navicula septifera Proschkina-Lavrenko, 1967
  * Navicula sequens H.G.Barber & J.R.Carter, 1971
  * Navicula serdicensis H. Lange-Bertalot & D. Metzeltin, 2006
  * Navicula serena Frenguelli, 1941
  * Navicula serica Schimanski, 1978
  * Navicula sericea Cholnoky, 1961
  * Navicula seriosa Pantocsek, 1892
  * Navicula serpentina McCall, 1933
  * Navicula serratula Grunow in Schmidt & al., 1875
  * Navicula setanensis Okuno, 1959
  * Navicula setschwanensis Skuja, 1937
  * Navicula setzeri Patrick & Freese, 1961
  * Navicula severascens Cholnoky, 1960
  * Navicula severini Nicolucci, 1842
  * Navicula shackletonii W.West & G.S.West, 1911
  * Navicula shanwangensis J.-Y. Li, 1982 †
  * Navicula shengxianensis Huang in Huang & Cai, 1984
  * Navicula shiloi J.J. Lee, C.W. Reimer & M.E. McEnery, 1980
  * Navicula siamensis Østrup, 1904
  * Navicula siberica Skvortzow, 1929
  * Navicula sibirica Skvortzov, 1929
  * Navicula sicula Ehrenberg, 1839
  * Navicula sideralis Brun in Schmidt & al., 1892
  * Navicula sieboldii Pantocsek, 1892
  * Navicula sieminskiae Lange-Bertalot & Witkowski, 2001
  * Navicula sigma Brun, 1891
  * Navicula sigma Ehrenberg, 1833
  * Navicula sigmaraphis Round, 1961
  * Navicula sigmoidea (Nitzsch) Ehrenberg, 1832
  * Navicula signatula Hustedt, 1964
  * Navicula silenda Hohn, 1966
  * Navicula silens Cholnoky, 1959
  * Navicula silicea Skvortzow, 1937
  * Navicula silicina Kisselev, 1931
  * Navicula silicula Ehrenberg, 1843
  * Navicula silicula sensu Grunow in Van Heurck, 1880
  * Navicula silvahercynia Lange-Bertalot in Lange-Bertalot & Krammer, 1989
  * Navicula silvatica Cholnoky, 1959
  * Navicula silvestrina
  * Navicula silvicola Cholnoky, 1966
  * Navicula sima Ehrenberg, 1845
  * Navicula simbirskiana Pantocsek, 1889
  * Navicula simiaevultus Brun, 1891
  * Navicula simonii Heiden
  * Navicula simplex Meister, 1937
  * Navicula simplexoides H.P.Gandhi ex Karthick, 2020
  * Navicula simplus Meister, 1937
  * Navicula simula Patrick, 1959
  * Navicula simulans Donkin, 1873
  * Navicula simulata Manguin, 1942
  * Navicula simulator Mann, 1925
  * Navicula sinensis Ehrenberg, 1847
  * Navicula singularis Maillard, 1978
  * Navicula singularis Schmidt, 1876
  * Navicula sinuata Schumann, 1867
  * Navicula sinuiraphe Patrick & Freese, 1961
  * Navicula sinuosa Ehrenberg, 1840
  * Navicula siofokensis Pantocsek, 1902
  * Navicula siofokensis sensu Fontell in Man., Cleve-Euler, 1953
  * Navicula siolii Hustedt, 1952
  * Navicula sipanguelensis Li, 1983
  * Navicula sitiens Cholnoky, 1966
  * Navicula sjoersii S.Busse & P.Snoeijs, 2002
  * Navicula skabitschewsky
  * Navicula skalenastriata Hohn, 1961
  * Navicula sketechiensis Foged, 1966
  * Navicula skiftei Foged, 1964
  * Navicula skvortzowii Karajeva, 1971
  * Navicula sleensis Simonsen, 1959
  * Navicula slesvicensis Grunow, 1880
  * Navicula smeerenburgensis Foged, 1964
  * Navicula smithiana Rabenhorst, 1868
  * Navicula smithii (Grunow) Hustedt, 1909
  * Navicula smithii Brébisson, 1854
  * Navicula smithii sensu Donkin, 1870
  * Navicula smithii sensu Schmidt in Schmidt & al., 1875
  * Navicula smithii sensu Van Heurck, 1880
  * Navicula smolandica Cleve-Euler, 1953
  * Navicula sniadeckii Missuna, 1914
  * Navicula sobralensis Zimmermann, 1918
  * Navicula sobria Cholnoky, 1963
  * Navicula sobrina Mann, 1937
  * Navicula socialis T.C.Palmer, 1910
  * Navicula soederlundii Cleve in Cleve & Moller, 1878
  * Navicula sohrensis
  * Navicula solaris Gregory, 1856
  * Navicula solaris Schmidt in Schmidt & al., 1876
  * Navicula soleta Cholnoky, 1959
  * Navicula solida Cleve in Cleve & Grunow, 1880
  * Navicula solitaria Cleve, 1896
  * Navicula soluta Cholnoky, 1968
  * Navicula soluta Frenguelli, 1941
  * Navicula solutepunctata Hustedt, 1939
  * Navicula solutina Schoeman in Schoeman & Meaton, 1982
  * Navicula soochowensis Skvortzow, 1946
  * Navicula soodensis Krasske, 1927
  * Navicula sorella M.H.Hohn & Hellerman, 1963
  * Navicula sorriensis Foged, 1966
  * Navicula sovereignae Hustedt, 1955
  * Navicula sovereignii L.L.Bahls, 2011
  * Navicula sovereignoides Stone in McLaughlin & Stone, 1986
  * Navicula sparsipunctata Grove & Sturt, 1886
  * Navicula sparsistriata Hustedt, 1964
  * Navicula spartinetensis Sullivan & Reimer, 1975
  * Navicula spathifera Grove & Sturt in litt. Grunow, 1888
  * Navicula spathula Brun, 1891
  * Navicula spatiata Østrup, 1918
  * Navicula speciosa Hustedt, 1913
  * Navicula speciosa Mann, 1907
  * Navicula spectabilis Gregory, 1857
  * Navicula spectabilis Greville in A. Schmidt, 1874
  * Navicula spectabilis Grunow, 1860
  * Navicula spectataissima Greville, 1866
  * Navicula spectrum Manguin, 1952
  * Navicula specululum Witkowski, 1994
  * Navicula speibonae Giffen, 1970
  * Navicula spencerii Bailey ex Quekett, 1848
  * Navicula sperkiana Reinhard, 1870
  * Navicula sphaerocephala Cleve-Euler, 1953
  * Navicula sphaerophora Ehrenberg, 1843
  * Navicula sphaerophora Geitler, 1927
  * Navicula sphaerophora sensu Donkin, 1871
  * Navicula sphagnicola Fusey, 1948
  * Navicula sphagnophila Krasske, 1948
  * Navicula spicoides Fusey, 1951
  * Navicula spiculifera A. Mann, 1925
  * Navicula spina
  * Navicula spinifera W.Bock, 1970
  * Navicula spiralis O'Meara, 1872
  * Navicula spirans Hustedt, 1934
  * Navicula spirata Hustedt, 1937
  * Navicula spissata Manguin in Bourrelly & Manguin, 1954
  * Navicula splendens Schwartz in Rabenhorst, 1877
  * Navicula splendicula Van Landingham, 1975
  * Navicula splendida Ehrenberg, 1832
  * Navicula splendidula Hustedt & Krasske, 1949
  * Navicula sponsa J.R.Carter, 1964
  * Navicula sponsalia Giffen, 1971
  * Navicula spuma Mann, 1907
  * Navicula spuria Cleve, 1896
  * Navicula st. thomae Cleve, 1878
  * Navicula stabilis F. Adams collection, 1934
  * Navicula stachurae A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
  * Navicula stagna J.Y.Chen & H.Z.Zhu
  * Navicula stagnalis Skvortzov, 1937
  * Navicula staminea Cholnoky, 1968
  * Navicula standeri Cholnoky, 1957
  * Navicula standeriella Archibald, 1966
  * Navicula stankovici Hustedt, 1945
  * Navicula starmachii A.Witkowski & Lange-Bertalot
  * Navicula starmachii Kaczmarska, 1976
  * Navicula starmachioides A. Witkowski & H. Lange-Bertalot in D. Metzeltin & A. Witkowski, 1996
  * Navicula staurifera Thomas, 1886
  * Navicula stauroneiformis Elmore, 1921
  * Navicula stauroneiformis Leuduger-Fortmorel, 1892
  * Navicula stauroneiformis M. Peragallo, 1921
  * Navicula stauroneiformis Manguin, 1949
  * Navicula stauroneiformis Wolle, 1890
  * Navicula stauroptera Schumann, 1867
  * Navicula stauropteroides F.E.Fritsch, 1912
  * Navicula stehlei Manguin in Bourrelly & Manguin, 1952
  * Navicula stephanssoni Foged, 1974
  * Navicula stercusmuscarum Cleve, 1895
  * Navicula steuropleura
  * Navicula stigmata Frenguelli
  * Navicula stigmata Rich, 1937
  * Navicula stigmatifera J.John, 1981
  * Navicula stippi Hanna & Grant, 1926
  * Navicula stoermeri Kociolek & Reviers, 1996
  * Navicula stokesiana O'Meara, 1876
  * Navicula stolida Krasske, 1939
  * Navicula stompsii Cholnoky, 1963
  * Navicula stradneri Hajós, 1974
  * Navicula strangulata Greville, 1866
  * Navicula streckerae Lange-Bertalot & Witkowski, 2000
  * Navicula strenzkei Hustedt, 1962
  * Navicula striata Filarszky, 1900
  * Navicula striola Prudent, 1907
  * Navicula striolata (Grunow) Lange-Bertalot, 1985
  * Navicula stroemii Hustedt, 1931
  * Navicula stroemii sensu Foged, 1958
  * Navicula structa Lange-Bertalot & Steindorf in Moser, Steindorf & Lange-Bertalot, 1995
  * Navicula struggeri Cholnoky, 1963
  * Navicula stundlii Hustedt, 1959
  * Navicula stuxbergii Cleve
  * Navicula stygia Cleve-Euler, 1934
  * Navicula stylus Ehrenberg, 1842
  * Navicula styriaca Grunow, 1880
  * Navicula styriaca Pantocsek, 1892
  * Navicula suavis Cleve & Grove, 1894
  * Navicula sub-kawamurae Skvortzow, 1971
  * Navicula subacuta (Ehrenberg) Ralfs, 1861
  * Navicula subacutis Foged, 1971
  * Navicula subadnata Hustedt, 1942
  * Navicula subagnita Proschkina-Lavrenko, 1963
  * Navicula subagrestis Guermeur, 1954
  * Navicula subalata Grunow in Cleve & Grunow, 1880
  * Navicula subalpina Reichardt, 1988
  * Navicula subantarctica Frenguelli, 1938
  * Navicula subarvensis Hustedt, 1942
  * Navicula subarvensoides Archibald, 1966
  * Navicula subatomoides Hustedt, 1936
  * Navicula subbacillum Hustedt, 1937
  * Navicula subbengalensis Gandhi, 1970
  * Navicula subbottnica A.Witkowski & Lange-Bertalot, 2009
  * Navicula subcancellata Hustedt in Schmidt & al., 1934
  * Navicula subcincta A.Schmidt, 1874
  * Navicula subcincta Grunow, 1884
  * Navicula subcingulata Cholnoky, 1963
  * Navicula subclementis Hustedt, 1952
  * Navicula subcoccus Cholnoky, 1960
  * Navicula subconcentrica Lange-Bertalot, 2001
  * Navicula subcontenta Hustedt
  * Navicula subcontenta Krieger, 1943
  * Navicula subcontracta Cleve-Euler, 1953
  * Navicula subconveniens Hustedt, 1952
  * Navicula subcrassirostris Hustedt, 1961
  * Navicula subcreta Frenguelli, 1941
  * Navicula subcuneata Østrup, 1910
  * Navicula subdapaliformis Gandhi, 1970
  * Navicula subdecipiens De Toni, 1891
  * Navicula subdecussis Hustedt, 1942
  * Navicula subdeliberata Manguin, 1964
  * Navicula subdelicata Hustedt in Schmidt & al., 1934
  * Navicula subdicephala Hustedt
  * Navicula subdiffusa Hustedt, 1955
  * Navicula subdigna Gandhi, 1970
  * Navicula subdilucida Cholnoky, 1959
  * Navicula subdirecta Cleve-Euler, 1953
  * Navicula subdita Schmidt in Schmidt & al., 1897
  * Navicula subdivisa Grunow in Cleve & Grunow, 1880
  * Navicula subelata H.P.Gandhi, 1998
  * Navicula subelliptica Cleve-Euler, 1953
  * Navicula subelongata Skabichevskii, 1936
  * Navicula subexilissima Carter, 1970
  * Navicula subfasciata Pantocsek, 1912
  * Navicula subfasciata Patrick, 1959
  * Navicula subforcipata Hustedt, 1964
  * Navicula subfortis Hustedt, 1954
  * Navicula subfossalis Hustedt, 1934
  * Navicula subfossilis Lichti-Federovich, 1980
  * Navicula subfraudulenta Simonsen, 1987
  * Navicula subfusca Pantocsek, 1892
  * Navicula subgastriformis Hustedt, 1945
  * Navicula subgastrum Hustedt in Schmidt & al., 1934
  * Navicula subglabra Østrup, 1904
  * Navicula subglobosa Gasse, 1980
  * Navicula subgrimmei Messikommer, 1949
  * Navicula subhastatula Z.Levkov & D.Metzeltin, 2007
  * Navicula subhexagona Hustedt in Schmidt & al., 1934
  * Navicula subhustedtii Cholnoky, 1960
  * Navicula subhyalina Cleve-Euler, 1934
  * Navicula subimpressa Grunow
  * Navicula subinflata Grunow, 1883
  * Navicula subinflatoides Hustedt, 1962
  * Navicula subinsoensis Foged, 1966
  * Navicula subirritans Giffen, 1970
  * Navicula subirroratoides Hustedt, 1964
  * Navicula sublanceolata H.P.Gandhi ex Karthick, 2020
  * Navicula sublinearis Grunow, 1885
  * Navicula sublucidula Hustedt, 1950
  * Navicula sublyrata Grunow in Cleve, 1883
  * Navicula subminuscula (Skvortzov, 2012)
  * Navicula subminuscula Manguin, 1942
  * Navicula submissa Zimmermann, 1918
  * Navicula submitis Hustedt, 1945
  * Navicula submolesta Hustedt, 1949
  * Navicula submuralis Hustedt, 1945
  * Navicula submuscicola Krasske, 1939
  * Navicula submutica Fusey, 1964
  * Navicula submuticoides N.Woodhead & R.D.Tweed, 1958
  * Navicula subnuda A.W.F.Schmidt
  * Navicula subnympharum Hustedt in Schmidt & al., 1936
  * Navicula subocculta Hustedt
  * Navicula suboscitans Mann, 1925
  * Navicula subparallela
  * Navicula subplacentula Hustedt, 1930
  * Navicula subpolaris Hendey, 1937
  * Navicula subprocera Hustedt, 1945
  * Navicula subpupula Woodhead & Tweed, 1960
  * Navicula subquadrata Schumann, 1867
  * Navicula subradiosa Pantocsek
  * Navicula subrecta Brébisson
  * Navicula subretusa Grunow, 1885
  * Navicula subretusa Peragallo & Peragallo, 1897-1908
  * Navicula subrhombica Hustedt, 1922
  * Navicula subrhombica Marsson, 1900
  * Navicula subrhomboidea Castracane, 1886
  * Navicula subrhynchocephala Hustedt, 1935
  * Navicula subrostellata Hustedt, 1955
  * Navicula subrotunda Schumann
  * Navicula subrotundata Hustedt
  * Navicula subsalsa Mereschkowsky, 1903
  * Navicula subseminulum Hustedt, 1950
  * Navicula subspectablis Hanna & Grant, 1926
  * Navicula substauroneis Mann, 1925
  * Navicula subsulcata Hustedt in Schmidt & al., 1936
  * Navicula subsulcatoides Hustedt, 1987
  * Navicula subtenelloides Cholnoky, 1958
  * Navicula subtenuis Cleve-Euler, 1948
  * Navicula subtilacea Cholnoky, 1960
  * Navicula subtilis (Gregory) Ralfs
  * Navicula subtilis Brebisson in Kutzing, 1849
  * Navicula subtilissima Cleve, 1891
  * Navicula subtilyra Cholnoky, 1963
  * Navicula subtrophicatrix A.Tuji, 2003
  * Navicula subula Kützing, 1844
  * Navicula subulata Grunow
  * Navicula subundulata Cleve & Grove, 1891
  * Navicula subvalida Cholnoky, 1960
  * Navicula subvasta Carter, 1970
  * Navicula subvasta Hustedt, 1935
  * Navicula subveneta Cleve-Euler, 1934
  * Navicula subventraloides Guermeur, 1954
  * Navicula subventricosa Grunow in Cleve & Grunow, 1880
  * Navicula subviridula Z.Levkov, 2011
  * Navicula subvitabunda Cholnoky, 1956
  * Navicula subvulpina Hustedt
  * Navicula subwalkeri Bahls & Potapova, 2015
  * Navicula succincta Schmidt in Schmidt & al., 1881
  * Navicula suchlandtii Hustedt, 1943
  * Navicula suchlandtii sensu Foged, 1958
  * Navicula suchlandtii sensu Krasske, 1949
  * Navicula sudanensis Bastow, 1960
  * Navicula sudora Schrader & Fenner, 1976
  * Navicula suecica Ehrenberg, 1838
  * Navicula suecicarum Van de Vijver, Jarlman & Lange-Bert. in Van de Vijver & Lange-Bertalot, 2009
  * Navicula suffocata Mann, 1925
  * Navicula suhinensis Foged, 1966
  * Navicula sukatschevii Yakovlev, 1924
  * Navicula sulcata Greville, 1865
  * Navicula sulcata sensu Schmidt in Schmidt & al., 1897
  * Navicula sulcifera Hustedt, 1955
  * Navicula sulphurea J.Frenguelli & H.A.Orlando, 1958
  * Navicula sulta Carter & Denny, 1982
  * Navicula suluensis O'Meara, 1872
  * Navicula sumatrensis Leuduger-Fortmorel, 1892
  * Navicula sunkonensis N.Woodhead & R.D.Tweed, 1958
  * Navicula superba Cleve
  * Navicula supercilliaris Cholnoky, 1963
  * Navicula supercontenta Cleve-Euler, 1948
  * Navicula supergradata Brun, 1891
  * Navicula supergregaria Rumrich & Lange-Bertalot, 2000
  * Navicula superhasta Lange-Bertalot & D.Metzeltin, 2006
  * Navicula superimposita Schmidt, 1874
  * Navicula supleeorum L.Bahls, 2013
  * Navicula supralitoralis Aleem & Hustedt, 1951
  * Navicula suprinii Gerd Moser
  * Navicula suriana Pantocsek & Greguss in Greguss, 1913
  * Navicula surinamensis Cleve, 1895
  * Navicula surirella Ehrenberg, 1881
  * Navicula surirellae
  * Navicula suspecta A.W.F.Schmidt
  * Navicula suspica Carter & Denny, 1992
  * Navicula suspirii Cholnoky, 1961
  * Navicula sverdrupii Foged, 1964
  * Navicula swaniana Moghadam, 1969
  * Navicula sydowii Cholnoky, 1963
  * Navicula symmetrica Patrick, 1944
  * Navicula syrachii Foged, 1966
  * Navicula syvertsenii Witkowski, Metzeltin & Lange-Bertalot in Metzeltin & Witkowski, 1996
  * Navicula szaboi Pantocsek, 1889
  * Navicula szlachetkoi A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
  * Navicula szontaghii Pantocsek, 1886
  * Navicula szontaghii sensu Peragallo & Peragallo, 1897
  * Navicula söhrensis Krasske
  * Navicula tabellaria (Ehrenberg) Kützing, 1844
  * Navicula tabellaria sensu Donkin, 1872
  * Navicula tabellariaeformis Krasske, 1939
  * Navicula tabida Rylands Ms. ex Van Heurck, 1880
  * Navicula tackei Hustedt, 1942
  * Navicula taedens Cholnoky, 1968
  * Navicula tagiana Patrick, 1970
  * Navicula tahitensis Grunow, 1863
  * Navicula tainensis Foged, 1966
  * Navicula tairuaensis Foged, 1979
  * Navicula takoradiensis Hendey, 1958
  * Navicula tamanaena Guermeur, 1954
  * Navicula tamanica Milovanova, 1955
  * Navicula tambourense M. Peragallo in Héribaud & al., 1920
  * Navicula tanakae H. Fukushima, T. Ko-Bayashi & S. Yoshitake, 2002
  * Navicula tanganyikae G.S.West, 1907
  * Navicula tanneri Cleve-Euler, 1934
  * Navicula tantula Hustedt, 1943
  * Navicula tantuloides Cholnoky, 1960
  * Navicula taraxa Hohn & Hellerman, 1966
  * Navicula taschenbergeri Schmidt in Schmidt & al., 1892
  * Navicula tau Cleve, 1893
  * Navicula tauta Carter & Denny, 1982
  * Navicula taylori Salah, 1955
  * Navicula tecta Marsson, 1900
  * Navicula tectissima Lange-Bertalot, 1996 †
  * Navicula teleta Hohn, 1966
  * Navicula teletskoyensis Chudaev
  * Navicula temeraria Cholnoky, 1965
  * Navicula temniskovae H. Lange-Bertalot & D. Metzeltin, 2006
  * Navicula temperei Brun in Brun & Tempère, 1889
  * Navicula temperiana De Toni, 1891
  * Navicula tenella sensu Schmidt in Schmidt te al., 1876
  * Navicula tenellaeformis Hustedt, 1937
  * Navicula tenelloides Hustedt, 1937
  * Navicula tenera Hustedt, 1936
  * Navicula tenera Hustedt, 1937
  * Navicula teneroides Hustedt, 1956
  * Navicula tenerrima Hustedt, 1937
  * Navicula tennellaeformis Hustedt, 1937
  * Navicula tennelloides
  * Navicula tentata Cholnoky, 1966
  * Navicula tenuirostris O'Meara, 1876
  * Navicula tenuis Meister, 1937
  * Navicula tenuissima Archibald, 1971
  * Navicula terebrata Hustedt, 1944
  * Navicula termes Ehrenberg
  * Navicula termes sensu Schmidt in Schmidt & al., 1876
  * Navicula terminata Hustedt, 1964
  * Navicula termitina Ehrenberg, 1854
  * Navicula terricola Bristol, 1920
  * Navicula tersa Hustedt, 1956
  * Navicula teschi Reinhold, 1937
  * Navicula testata Hustedt, 1942
  * Navicula testudo Ehrenberg, 1840
  * Navicula texana R.M.Patrick, 1959
  * Navicula thaitiana Castracane, 1886
  * Navicula thallodes Proschkina-Lavrenko, 1955
  * Navicula theelii Cleve in Cleve & Grunow, 1880
  * Navicula theibaudii M. Peragallo, 1924
  * Navicula theresiae Pantocsek, 1909
  * Navicula thermalis De Toni, 1891
  * Navicula thermalis Ehrenberg, 1840
  * Navicula thermes Elmore, 1921
  * Navicula thermicola J.B.Petersen, 1928
  * Navicula theronii Cholnoky, 1954
  * Navicula theta Cleve, 1893
  * Navicula thienemanni Hustedt, 1937
  * Navicula thienemannioides Gandhi, 1970
  * Navicula thienemannoides Cholnoky, 1952
  * Navicula thingvallae Østrup, 1918 †
  * Navicula thomasii Hancock, 1973
  * Navicula thomasii Schumann, 1862
  * Navicula thorax Brun, 1891
  * Navicula thoroddseni Foged, 1974
  * Navicula thouleti Lauby, 1910
  * Navicula thumii Pantocsek, 1886
  * Navicula thurholmensis Juhlin-Dannfelt, 1882
  * Navicula thuringiaca Rabenhorst, 1852, Alg. Sach.
  * Navicula thuringica Kützing, 1844
  * Navicula tibestiensis Amossé, 1934
  * Navicula tientsinensis Skvortzow, 1927
  * Navicula tignaria Hustedt, 1942
  * Navicula tithonia Pantocsek, 1902
  * Navicula tokiensis Cleve-Euler, 1953
  * Navicula tokyoensis Kobayashi, 1968
  * Navicula tolmani Hanna, 1927
  * Navicula topia Pantocsek, 1902
  * Navicula torellii Foged, 1964
  * Navicula torganae D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
  * Navicula torifera Hustedt, 1955
  * Navicula torneensis Cleve, 1891
  * Navicula torpedo Zimmermann, 1918
  * Navicula torrendi
  * Navicula torta D.G.Mann, 1924
  * Navicula tortuosa Ehrenberg, 1843
  * Navicula tortuosa Leuduger-Fortmorel, 1879
  * Navicula tortura Cholnoky, 1960
  * Navicula totarae Schrader, 1969
  * Navicula toulaae Pantocsek, 1892
  * Navicula toulaae sensu Brockmann, 1950
  * Navicula toulaae Østrup in Hartz & Østrup, 1899
  * Navicula towutiensis Cholnoky, 1963
  * Navicula toxa J.R.Carter, 1960
  * Navicula trabecula Ehrenberg, 1843
  * Navicula tracery M.H.Hohn & Hellerman, 1963
  * Navicula tranchet Turpin, 1828
  * Navicula transistans
  * Navicula transistantiodes Foged, 1975
  * Navicula transitans Cleve, 1883
  * Navicula translucens Mann, 1925
  * Navicula translucida O'Meara, 1876
  * Navicula transversa A.Schmidt, 1876
  * Navicula transversa Bory de Saint-Vincent, 1824
  * Navicula transversa Turpin, 1828 (1816-1829)
  * Navicula transylvanica Pantocsek
  * Navicula traucilola Guermeur
  * Navicula triangulifera Héribaud, 1903
  * Navicula trichoptera Foged, 1952
  * Navicula triconfusa VanLandingham, 1975
  * Navicula tridens Meunier, 1910
  * Navicula tridentula Krasske, 1923
  * Navicula tridentulaeformis Manguin in Bourrelly & Manguin, 1949
  * Navicula trigibba Fresenius, 1862
  * Navicula trigibba Lacsny, 1916
  * Navicula trigibbula Schumann, 1867
  * Navicula trigomirae Moura, 1963
  * Navicula trigramma Fresenius, 1862
  * Navicula trigranula Marsson, 1900
  * Navicula trilatera L.Bahls, 2013
  * Navicula trilineata Grove & Sturt, 1887
  * Navicula trinkleri Meister, 1932
  * Navicula trinodis Ehrenberg, 1837
  * Navicula trinodis W.Smith, 1856
  * Navicula trinodis sensu Lewis, 1861
  * Navicula trinotata Pantocsek, 1892
  * Navicula tripartita Heiden
  * Navicula triplex VanLandingham, 1975
  * Navicula tristitiae Schoeman, 1973
  * Navicula tristriata Skvortzow, 1946
  * Navicula trituberculata Prowse, 1962
  * Navicula triundulata Grunow, 1867
  * Navicula trivialis Lange-Bertalot, 1980
  * Navicula trochus Ehrenberg, 1854
  * Navicula trochus Schumann, 1863
  * Navicula troglodytes Pantocsek, 1889
  * Navicula trolopensis Frenguelli, 1942
  * Navicula trophicatrix Lange-Bertalot, 1996
  * Navicula trophicatrixoides Chudaev in Chudaev & Jüttner, 2020
  * Navicula tropica Meister, 1934 (1935)
  * Navicula tropicoidea Witkowski, Metzeltin & Lange-Bertalot in Metzeltin & Witkowski, 1996
  * Navicula truanii Pantocsek, 1886
  * Navicula truncata Cleve-Euler, 1915
  * Navicula truncata Donkin, 1861
  * Navicula truncata Kützing, 1844
  * Navicula truncatula Hustedt, 1966
  * Navicula trunculis Schumann, 1867
  * Navicula trunculus Schumann, 1867
  * Navicula truthi Pero, 1895
  * Navicula tryblionella Yakovlev, 1923
  * Navicula tschernyschevii Missuna, 1914
  * Navicula tschuktschorum Cleve, 1883
  * Navicula tsetsegmaae D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
  * Navicula tsitsikammae Cholnoky, 1959
  * Navicula tsukamotoi (Sterrenburg & Hinz) Yuhang Li & Kuidong Xu in Li & al., 2017
  * Navicula tubulata Østrup, 1901
  * Navicula tubulifera Geissler & Gerloff, 1964
  * Navicula tubulosa J.Brun, 1895
  * Navicula tugelae Cholnoky, 1956
  * Navicula tugtoi Foged, 1971
  * Navicula tulugakii Foged, 1971
  * Navicula tumens W.Smith, 1853
  * Navicula tumescens Grunow in Schmidt & al., 1877
  * Navicula tumescensoides Amossé, 1969
  * Navicula tumida Brébisson ex Kützing
  * Navicula tumidula Rabenhorst, 1853
  * Navicula turbulata Østrup, 1901
  * Navicula turgescens Mann, 1925
  * Navicula turgida Ehrenberg, 1830
  * Navicula turgidula Pantocsek, 1892
  * Navicula turkestanensis Hustedt, 1955
  * Navicula turpinii Brebisson ex W. Smith Collection
  * Navicula turriformis Y.Li & Metzeltin iin Li & al., 2020
  * Navicula turris Hustedt, 1936 †
  * Navicula tuscula sensu Grunow in Van Heurck, 1880
  * Navicula tuscula sensu Pantocsek, 1902
  * Navicula tuscula sensu Van Heurck, 1880
  * Navicula tuulensis D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
  * Navicula tuzsoni Lacsny, 1916
  * Navicula tuzsonii Lacsny, 1916
  * Navicula twymaniana Archibald, 1966
  * Navicula typografica Hustedt in Schmidt & al., 1930
  * Navicula tytthocephala Skvortzov, 1976
  * Navicula udintsevii Schrader & Fenner, 1976
  * Navicula ulna (Nitzsch) Ehrenberg
  * Navicula ultratenelloides Lange-Bertalot, 1996
  * Navicula umbilica K.E. Lohman, 1957
  * Navicula umbilicata Ehrenberg, 1856
  * Navicula umbilicata Grunow
  * Navicula umbilicata Zimmermann, 1917
  * Navicula umbilicatissima Reichardt, 1983 †
  * Navicula umbonata Ehrenberg, 1837
  * Navicula umbra M.H.Hohn & Hellerman, 1963
  * Navicula umida Bock, 1963
  * Navicula umkantziensis Schoeman & Meaton
  * Navicula umpatica Cholnoky, 1968
  * Navicula umtalensis Cholnoky, 1954
  * Navicula umtentwenica Cholnoky, 1960
  * Navicula uncinata Ehrenberg, 1830
  * Navicula undata Mann, 1907
  * Navicula undata Schumann in A. Schmidt, 1876
  * Navicula undosa Ehrenberg, 1843
  * Navicula undosa sensu Donkin, 1871
  * Navicula undosa sensu O'Meara, 1876
  * Navicula undula Schumann, 1862 †
  * Navicula undulata O'Meara, 1875
  * Navicula undulata Ralfs, 1861
  * Navicula undulata Skvortzov, 1936
  * Navicula undulatistriata Manguin, 1954
  * Navicula undulatostriata Gleser in Afanas'eva & Gleser, 1986
  * Navicula ungavae Poulin & Cardinal, 1982
  * Navicula unica Salah & Tamas, 1968
  * Navicula unilaterarea Salah, 1953
  * Navicula unipunctata Bory, 1831
  * Navicula unipunctata O'Meara, 1872
  * Navicula unipunctata Skvortzow, 1937
  * Navicula uniseriata Hustedt in Schmidt & al., 1934
  * Navicula uniseriata Østrup, 1913
  * Navicula upupensis Cholnoky, 1966
  * Navicula urbana Krasske, 1939
  * Navicula ursina Pantocsek, 1902
  * Navicula ursinus Foged, 1971
  * Navicula usoltsevae Metzeltin, Kulikovskiy & Lange-Bertalot, 2012
  * Navicula uspenskiana Gleser & Scheschukova, 1968
  * Navicula usutensis Cholnoky, 1962
  * Navicula utahensis K.E. Lohman, 1957
  * Navicula utermoehlii Hustedt, 1942
  * Navicula utlandshoerniensis VanLandingham, 1975
  * Navicula vacillans A.Schmidt, 1875
  * Navicula vacillans Cleve-Euler, 1948
  * Navicula vaga Cleve, 1896
  * Navicula vagabunda Brun in Schmidt & al., 1892
  * Navicula vahliana Grunow in Schmidt, 1874
  * Navicula vahlii Foged, 1964
  * Navicula valdestriata Hustedt, 1952
  * Navicula valens Cholnoky, 1963
  * Navicula valens Hustedt, 1962
  * Navicula valeriana D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
  * Navicula valida Cleve & Grunow
  * Navicula validicostata Cleve-Euler, 1953
  * Navicula vallis
  * Navicula vallis-natrii
  * Navicula vampyra Hohn, 1966
  * Navicula vana Schmidt in Schmidt & al., 1881
  * Navicula vandamii Schoeman & Archibald, 1987
  * Navicula vandermerwei Cholnoky, 1957
  * Navicula vaneei Lange-Bertalot, 1998
  * Navicula vanei H. Lange-Bertalot in D. Metzeltin & A. Witkowski, 1996
  * Navicula vaneldenii Cholnoky, 1957
  * Navicula vanheurckii R.M.Patrick, 1966
  * Navicula vanhoeffeniformis Gandhi, 1955
  * Navicula vanhoeffenii Gran, 1897
  * Navicula vanidica Cholnoky, 1962
  * Navicula vanmeelii Kufferath, 1956
  * Navicula vara Hustedt in Schmidt & al., 1934
  * Navicula variabilis Bljumina, 1959
  * Navicula varians Gregory, 1855
  * Navicula varikuli Foged, 1972
  * Navicula variolinea J.R.Carter, 1971
  * Navicula varrensis
  * Navicula vasta Hustedt, 1937
  * Navicula vaszaryi Pantocsek
  * Navicula vatinata Carter & Denny, 1982
  * Navicula vaucheriae Petersen, 1915
  * Navicula vaupellii Foged, 1962
  * Navicula vegae Cleve, 1883
  * Navicula vekhovii Lange-Bertalot & Genkal, 1999
  * Navicula velata Cleve-Euler, 1953
  * Navicula velata Schmidt in Schmidt & al., 1876
  * Navicula velata sensu Cleve-Euler, 1953
  * Navicula velox Ehrenberg, 1830
  * Navicula velox Kützing, 1844
  * Navicula venerablis Hohn & Hellerman, 1963
  * Navicula veneta Schumann, 1867
  * Navicula venetiformis B. Van de Vijver & L. Beyens in Van de Vijver, Frenot & Beyens, 2002
  * Navicula venetoides S.Blanco, I.Alvarez-Blanco & C.Cejudo-Figueiras, 2012
  * Navicula venezuelana Cholnoky, 1968
  * Navicula venezuelensis Hustedt, 1956
  * Navicula ventosa Hustedt, 1957
  * Navicula ventralis Krasske, 1923
  * Navicula ventralis sensu Foged, 1958
  * Navicula ventraloconfusa Lange-Bertalot, 1989
  * Navicula ventraloides Hustedt, 1945
  * Navicula ventricosa Ehrenberg, 1830
  * Navicula venus Pantocsek, 1892
  * Navicula venusta Janisch ex Cleve, 1895
  * Navicula venusta Pantocsek, 1889
  * Navicula venustissima Kitton in Leuduger-Fortmorel, 1892
  * Navicula verecunda Hustedt, 1930
  * Navicula verecundaeformis Manguin ex Kociolek & Reviers, 1996
  * Navicula verecundoides Manguin ex Kociolek & Reviers, 1996
  * Navicula vernalis Donkin, 1869
  * Navicula versatilis Marsson, 1900
  * Navicula versicolor Grunow, 1874
  * Navicula vertebrata O'Meara, 1872
  * Navicula vespa O'Meara, 1871
  * Navicula vesparella Mann, 1925
  * Navicula veterana Hustedt, 1987
  * Navicula vetita Krasske, 1941
  * Navicula vetula A.Schmidt, 1875
  * Navicula vexans Petit, 1904
  * Navicula vexativa Manguin, 1952
  * Navicula vibrio Ehrenberg, 1854
  * Navicula vichiensis C. Petit in Montagne, 1856
  * Navicula vicina Hustedt, 1952
  * Navicula vickersii O'Meara, 1876
  * Navicula vidovichii Grunow in litteris, 1863
  * Navicula vilaplanii (Lange-Bertalot & Sabater) Lange-Bertalot & Sabater, 2000
  * Navicula viminea Hustedt in Schmidt & al., 1934
  * Navicula viminoides Giffen, 1975
  * Navicula vincita Carter & Denny, 1982
  * Navicula viola Schmidt in Schmidt & al., 1896
  * Navicula virgata Hustedt in Schmidt & al., 1934
  * Navicula virginalis Hustedt, 1956
  * Navicula virginea Cleve, 1878
  * Navicula viridis (Nitzsch) Ehrenberg, 1832
  * Navicula viridis Ehrenberg, 1838
  * Navicula viridis Schmidt in Schmidt & al., 1876
  * Navicula viridis sensu Kutzing, 1844
  * Navicula viridis sensu Pantocsek, 1892
  * Navicula viridula Neupauer, 1867
  * Navicula viridulacalcis Lange-Bertalot, 2000
  * Navicula viriduloides H.P.Gandhi, 1959
  * Navicula virihensis Cleve-Euler, 1953
  * Navicula virosa Carter & Denny, 1992
  * Navicula visitanda Carter, 1970
  * Navicula vitabunda Hustedt, 1930
  * Navicula vitila Carter & Denny, 1982
  * Navicula vitrea Grunow in Cleve & Möller, 1879
  * Navicula vitriscala Brun, 1891
  * Navicula vixcylindrata Kulikovskiy Lange-Bertalot & Metzeltin, 2012
  * Navicula vixvisibilis Hustedt, 1937
  * Navicula vladivostokensis Skvortzow, 1932
  * Navicula voigtii F.Meister, 1932
  * Navicula voigtioides Amossé, 1969
  * Navicula volcanica Bahls & Potapova, 2015
  * Navicula voltaensis Foged, 1966
  * Navicula vonhauseniae Cholnoky, 1954
  * Navicula vonpostii Cleve-Euler, 1953
  * Navicula vukotinovicii Pantocsek, 1886
  * Navicula vula J.R.Carter, 1971
  * Navicula vulpecula Schmidt in Schmidt & al., 1875
  * Navicula vulpina Kützing, 1844
  * Navicula vulpina Wislouch, 1921
  * Navicula vulpina sensu Pantocsek, 1902
  * Navicula vumbae Cholnoky, 1954
  * Navicula waernensis Foged, 1964
  * Navicula walkeri Patrick & Freese, 1961
  * Navicula walkerii Sovereign, 1958
  * Navicula wallacei Bastow, 1957
  * Navicula wallacei Reimer, 1966
  * Navicula walterconradii Kufferath, 1957
  * Navicula walzii Reinhard, 1870
  * Navicula wangii Skvortzov, 2012
  * Navicula wardhensis Sarode & Kamat, 1984
  * Navicula wardii Patrick, 1959
  * Navicula warmingii Foged, 1962
  * Navicula wasmundii Witkowski, Metzeltin & Lange-Bertalot in Metzeltin & Witkowski, 1996
  * Navicula watveae C. Radhakrishnan, Kociolek & B. Karthick
  * Navicula wavella Carter & Denny, 1982
  * Navicula wawrikae Hustedt, 1961
  * Navicula weberi Bahls, 2012
  * Navicula weikerti E.Manguin, 1952
  * Navicula weinzierlii H.Schimanski, 1975
  * Navicula weissflogii A.W.F.Schmidt, 1873
  * Navicula wellingtonica Cholnoky, 1962
  * Navicula wendlingii Lange-Bert., G.Hofm. & Van de Vijver in Van de Vijver & Lange-Bertalot, 2009
  * Navicula werestschagini Skvortzov & Meyer
  * Navicula westermannii Ehrenberg, 1835
  * Navicula westii W.Smith, 1853
  * Navicula wetzeli Hustedt in Schmidt & al., 1934
  * Navicula wheeleri MacKay in Bailey, 1924
  * Navicula whitefishensis L.Bahls, 2012
  * Navicula wiesneri Lange-Bertalot, 1993
  * Navicula wiesnerii Pantocsek, 1886 †
  * Navicula wigginsiana Patrick & Freese, 1961
  * Navicula wiktoriae A.Witkowski & Lange-Bertalot, 1994
  * Navicula wilczeckii Grunow, 1884
  * Navicula wildii Lange-Bertalot, 1993
  * Navicula willeri Krasske, 1939
  * Navicula williamsonii O'Meara, 1875
  * Navicula willisiae Seddon & Witkowski, 2011
  * Navicula wilmanni Fritsch & Rich, 1929
  * Navicula winchelliana H.L. Smith in B.W. Thomas, 1893
  * Navicula winona Bahls, 2012
  * Navicula wisei Harwood & Maruyama, 1992
  * Navicula wislouchii Kutzing
  * Navicula wislouchii Skvortzov & Meyer
  * Navicula witkowskii Lange-Bertalot, Iserentant & Metzeltin, 1998
  * Navicula witti Heiden in Schmidt & al., 1903
  * Navicula wittiana Grunow in A. Schmidt, 1874
  * Navicula wittii Grunow in Cleve, 1881
  * Navicula wohlenbergi Brockmann, 1950
  * Navicula wolterecki
  * Navicula woronichinii Jasnitsky, 1936
  * Navicula woroninii Mereschkowsky, 1903
  * Navicula wrightiana Woodhead & Tweed, 1960
  * Navicula wrightii O'Meara, 1867
  * Navicula wuestii R.Simonsen, 1959
  * Navicula wulffii Petersen, 1924
  * Navicula wunsamiae A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
  * Navicula wustula Carter & Denny, 1982
  * Navicula wygaschii Lange-Bertalot, 2001
  * Navicula xi Cleve
  * Navicula xi sensu Hustedt in Schmidt & al., 1930
  * Navicula yabe Skvortzow, 1937
  * Navicula yarrasii Grunow in H.L. Smith, 1874-1879
  * Navicula yatukaensis Y.Horikawa & H.Okuno, 1943
  * Navicula yorkensis Camburn, 1978
  * Navicula ypsilon Cleve, 1894
  * Navicula yunnanensis Li & Metzeltin, 2015
  * Navicula yuraensis Negoro & Gotoh, 1983
  * Navicula zachariasi Reichelt, 1903
  * Navicula zagrebensis VanLandingham, 1975
  * Navicula zahlbruckneri Pantocsek, 1909
  * Navicula zanardiniana Grunow, 1860
  * Navicula zanonii
  * Navicula zastronensis Schoeman, 1973
  * Navicula zebra Ehrenberg, 1833
  * Navicula zechenteri Pantocsek, 1886
  * Navicula zeilleri Lauby
  * Navicula zelebori Ehrenberg, 1862
  * Navicula zeta Cleve, 1895
  * Navicula zhengii Witkowski & Ch.Li in Witkowski & al., 2016
  * Navicula zichyi
  * Navicula zimmermannii D.F.Gomes & D.M.Williams, 2012
  * Navicula zipila Carter & Denny, 1982
  * Navicula zizix Van Landingham, 1975
  * Navicula zohdyi Salah, 1953
  * Navicula zonata Hustedt, 1956
  * Navicula zonula Cholnoky, 1960
  * Navicula zostereti Grunow
  * Navicula zostereti sensu Schmidt, 1874
  * Navicula zsivnyana Krenner, 1926
  * Navicula zulu Cholnoky, 1957
  * variété Navicula var. fasciata
  