Wikipedia
Olympiacos swimming department was established roughly at the same time with the club's foundation in 1925. Olympiacos is considered the lifelong champion in swimming and has listed athletes, who were prominent in Greece and distinguished themselves in European events.
Olympiacos sailing department was established in 1963 and since then has won Olympic distinctions (three gold, one silver and two bronze medals), two gold medals in World Championships as well as one gold, two silver and one bronze medal in European Championships. The sailing department successfully organized the Finn Gold Cup in Athens in 1998 and in 2002 at the club's marine training facilities in Alexandras Square, Piraeus. The leading athlete in the FINN Category is World Champion and Olympiacos athlete, Emilios Papathanasiou .
Olympiacos ( Table Tennis) department (Ping-Pong) was established in 1956 and has both a Men's and a Women's division. From 1962 to 1967,they won every single women's Hellenic Championship, while from 1967 to 1986 they won all Hellenic Championships in the mixed categories. In the last few years, having benefited by the sponsorship of Thrilos SA, they have emerged even more confidently in title – challenging and have achieved important distinctions both in the men's and in the women's divisions.
Olympiacos track and field department was established on November 16, 1953. The department has had in its ranks, through transfers, some of the best athletes in the track and field events in Greece including Olympic medalists as well as World, European, Mediterranean, Balkan and Pan-Hellenic Champions. Cases in point are Kenteris, Thanou, Iakovakis, Voggoli, Devetzi, Halkia, Maniani, Xanthou, Meletoglou, Dimotsios, Doupis, Polias, Polymerou, Papadias, Karastamati, Iltsios, Redoumi, Papagianni and more.