Peiraikos Syndesmos (Greek: Πειραϊκός Σύνδεσμος) or simply Peiraikos, also written Piraikos Syndesmos, is one of the oldest sports clubs in Greece, based in Piraeus.

[1] Today Peiraikos has departments in basketball, volleyball, and track and field.

[2] The previous years it had departments in football, swimming, handball, and water polo.

[3] Peiraikos was the first club which founded a football team in Piraeus.

It was the club that brought volleyball to the city of Piraeus.