AEK FC, (Greek: AEK - Αθλητική Ένωσις Κωνσταντινουπόλεως – Athlitiki Enosis Konstantinoupoleos), the Athletic Union of Constantinople, known in European competitions as AEK Athens, is a Greek association football club based in the city of Athens, Greece.
Established in Athens on 13th April 1924 by Greek refugees from Constantinople (now Istanbul) in the wake of the Greco-Turkish War, AEK has grown to become one of the most successful clubs in Greek football, winning 27 national titles (including 11 Championships, 13 Greek Cups, 1 League Cup, 2 Super Cups), providing the Greek National Football Team with many of its star players, and continuously appearing in European (UEFA Champions League and UEFA Cup) competitions.The club currently competes in the Super League Greece.