Panathinaikos FC (Greek: Π.Α.Ε. Παναθηναϊκός), is a Greek professional football club based in Athens. Founded in 1908, they play in the Super League Greece and are one of the oldest clubs in Greek football history. They have won 20 Greek championship titles, 16 Greek Cups, and in 1971, they reached the European Champion Clubs' Cup final.
Panathinaikos FC is the football department of Panathinaikos Athlitikos Omilos multi-sport club (Παναθηναϊκός Αθλητικός Όμιλος), the Pan-Athenian Athletic Club, from which the club's other name, P.A.O., derives. In 1979, the department became professional and independent. They have played their home games in a number of fields, most significantly in Apostolos Nikolaidis Stadium, which is considered as their traditional home stadium, and in Athens Olympic Stadium. In 2008, the club announced the signing of a contract for the construction of its new stadium, Marfin Stadium, the project began in September 2008 and will be ready for the 2010–11 season.