AEK Athens Football Club (Greek: ΠΑΕ ΑΕΚ), also known simply as AEK, AEK Athens (in European competitions), or with its full name Athlitiki Enosis Konstantinoupoleos (Greek: Αθλητική Ένωσις Κωνσταντινουπόλεως, Athletic Union of Constantinople), is a Greek association football club based in Nea Filadelfeia suburb of Athens.