Olympiakos

Olympiakos or Olympiacos may refer to:
 * Olympiacos CFP, a multisport club in Piraeus, Greece
 * Olympiacos F.C., the football department of Olympiacos CFP
 * Olympiacos B.C., the basketball department of Olympiacos CFP
 * Olympiacos S.C., the men's volleyball department of Olympiacos CFP
 * Olympiacos Water Polo Club, the men's water polo department of Olympiacos CFP
 * Olympiacos Women's Water Polo Team, the women's water polo department of Olympiacos CFP
 * Olympiacos women's volleyball, the women's volleyball department of Olympiacos CFP
 * Olympiakos Chersonissos F.C., a football club in Chersonisos, Greece
 * Olympiakos Neon Liosion, a football club in Ilion, Greece
 * Olympiakos Nicosia, a football club in Nicosia, Cyprus
 * Olympiakos Patras F.C., a football club in Patras, Greece
 * Olympiacos Volou 1937 F.C., a football club in Volos, Greece