 Dunningen shares the municipal boundaries with Waldmössingen, Beffendorf, Bösingen, Villingendorf, Hochwald, Zimmerm ob Rottweil, Eschbronn and Sulgen.Administratively, Waldmössingen and Sulgen, which are located in northern and western direction, are part of the city of Schramberg, whereas Hochwald in southern and Beffendorf in northern direction, belong respectively to the towns of Rottweil and Oberndorf.The municipality consists of three districts which are Dunningen, Seedorf and Lackendorf.