 The club was official formed in 1923 as Ethnikos Omilos Filathlon Piraeus Faliro (existed since 1922 unofficially), and played its first competitive match in 1923 for the Piraeus Football Clubs Association championship, where they eventually lost their first title competing for from A.P.S.P (Athlikos Podosferikos Somation Pireas).Ethnikos Piraeus was one of the founding members of Hellenic Football Federation in 1926, and is one of six clubs, including AEK Athens, PAOK, Panathinaikos, Aris Thessaloniki and Olympiacos, never to have been relegated from the league until 1990.They have also been involved in international football playing a number of friendlies against famous clubs such as Inter Milan, Galatasaray S.K., and Hungary national football team in the 1950s, and participated in the Balkans Cup on two occasions.