A1 Ethniki Water Polo
The A1 Ethniki, often referred to as the Greek Water Polo League, is the highest professional water polo league in Greece. It is run by the Hellenic Swimming Federation. It is considered one of the top national leagues in European water polo, as its clubs have made significant success in European competitions.
Olympiacos Piraeus has conquered the most Greek League titles, with 39. Ethnikos also has the record for consecutive championships, with 18.
History
- 1923-27: Panhellenic Championship
- 1927–28 to 1965-66: Panhellenic Championship
- 1966–67 to 1985-86: A Ethniki
- 1986–87 to present: 'A1 Ethniki '''''
Title holders
- 1922–23 Peiraikos
- 1925–26 Ethnikos Piraeus
- 1926–27 Olympiacos Piraeus
- 1927–28 Aris Thessaloniki
- 1928–29 Aris Thessaloniki
- 1929–30 Aris Thessaloniki
- 1930–31 Ethnikos Piraeus
- 1931–32 Aris Thessaloniki
- 1932–33 Olympiacos Piraeus
- 1933–34 Olympiacos Piraeus
- 1934–35 NO Patras
- 1935–36 Olympiacos Piraeus
- 1936–37 NO Patras
- 1937–38 NO Patras
- 1938–39 NO Patras
- 1939–40 NO Patras
- 1941–44 Not held due to WW II
- 1944–45 NO Patras
- 1945–46 NO Patras
- 1946–47 Olympiacos Pireaus
- 1947–48 Ethnikos Piraeus
- 1948–49 Olympiacos Piraeus
- 1949–50 NO Patras
- 1950–51 Olympiacos Piraeus
- 1951–52 Olympiacos Piraeus
- 1952–53 Ethnikos Piraeus
- 1953–54 Ethnikos Piraeus
- 1954–55 Ethnikos Piraeus
- 1955–56 Ethnikos Piraeus
- 1956–57 Ethnikos Piraeus
- 1957–58 Ethnikos Piraeus
- 1958–59 Ethnikos Piraeus
- 1959–60 Ethnikos Piraeus
- 1960–61 Ethnikos Piraeus
- 1961–62 Ethnikos Piraeus
- 1962–63 Ethnikos Piraeus
- 1963–64 Ethnikos Piraeus
- 1964–65 Ethnikos Piraeus
- 1965–66 Ethnikos Piraeus
- 1966–67 Ethnikos Piraeus
- 1967–68 Ethnikos Piraeus
- 1968–69 Ethnikos Piraeus &
- 1969–70 Ethnikos Piraeus
- 1970–71 Olympiacos Piraeus
- 1971–72 Ethnikos Piraeus
- 1972–73 Ethnikos Piraeus
- 1973–74 Ethnikos Piraeus
- 1974–75 Ethnikos Piraeus
- 1975–76 Ethnikos Piraeus
- 1976–77 Ethnikos Piraeus
- 1977–78 Ethnikos Piraeus
- 1978–79 Ethnikos Piraeus
- 1979–80 Ethnikos Piraeus
- 1980–81 Ethnikos Piraeus
- 1981–82 Ethnikos Piraeus
- 1982–83 Ethnikos Piraeus
- 1983–84 Ethnikos Piraeus
- 1984–85 Ethnikos Piraeus
- 1985–86 ANO Glyfada
- 1986–87 ANO Glyfada
- 1987–88 Ethnikos Piraeus
- 1988–89 ANO Glyfada
- 1989–90 ANO Glyfada
- 1990–91 NO Vouliagmeni
- 1991–92 Olympiacos Piraeus
- 1992–93 Olympiacos Piraeus
- 1993–94 Ethnikos Piraeus
- 1994–95 Olympiacos Piraeus
- 1995–96 Olympiacos Piraeus
- 1996–97 NO Vouliagmeni
- 1997–98 NO Vouliagmeni
- 1998–99 Olympiacos Piraeus
- 1999–00 Olympiacos Piraeus
- 2000–01 Olympiacos Piraeus
- 2001–02 Olympiacos Piraeus
- 2002–03 Olympiacos Piraeus
- 2003–04 Olympiacos Piraeus
- 2004–05 Olympiacos Piraeus
- 2005–06 Ethnikos Piraeus
- 2006–07 Olympiacos Piraeus
- 2007–08 Olympiacos Piraeus
- 2008–09 Olympiacos Piraeus
- 2009–10 Olympiacos Piraeus
- 2010–11 Olympiacos Piraeus
- 2011–12 NO Vouliagmeni
- 2012–13 Olympiacos Piraeus
- 2013–14 Olympiacos Piraeus
- 2014–15 Olympiacos Piraeus
- 2015–16 Olympiacos Piraeus
- 2016–17 Olympiacos Piraeus
- 2017–18 Olympiacos Piraeus
- 2018–19 Olympiacos Piraeus
- 2019–20 Olympiacos Piraeus
- 2020–21 Olympiacos Piraeus
- 2021–22 Olympiacos Piraeus
- 2022–23 Olympiacos Piraeus
- 2023–24 Olympiacos Piraeus
- 2024–25 Olympiacos Piraeus
Titles by club
Consecutive championships
18 in a row' Ethnikos Piraeus→1953–197014 in a row
- '
- Olympiacos Piraeus→2013–2025
- Olympiacos Piraeus→1999–2005
- NO Patras→1937–1946
- Olympiacos Piraeus→2007–2011
- Aris Thessaloniki→1928–1930
- Olympiacos→1933–1934, 1951–1952, 1992–1993, 1995–1996
- ANO Glyfada→1986–1987, 1989–1990
- NO Vouliagmeni→1997–1998