Olympiacos F.C. (Greek: Ολυμπιακός Σ.Φ.Π.), also known simply as Olympiacos or Olympiacos Piraeus is a professional soccer club, based out of Piraeus, Greece. Olympiacos is the most successful club in Greek soccer history, having won 38 League titles, 24 Greek Cups and 4 Greek Super Cups; more titles than any other Greek team and it is one of four teams that has never been relegated from the Greek Super League; in European competitions, they have reached the quarter-finals twice, in the 1998–99 UEFA Champions League and the 1992–93 European Cup Winners’ Cup. Olympiacos is also one of the founding members of the European Club Association.
The club’s stadium is the newly rebuilt Karaiskakis Stadium in Piraeus (33,000 seats). Olympiacos is the most popular Greek club with around two and a half million fans in Greece.
Olympiacos FC also has a strong presence in the UEFA Champions and Europa Leagues. Some well-known players that have played for Olympiacos FC are Yaya Toure, Predraq Djordjevic, Darko Kovacevic, Marko Pantelic, Nery Castillo, Esteban Cambiasso, Giovanni, and Rivaldo.