# A1 Ethniki Water Polo

The A1 Ethniki (Greek: Α1 Εθνική Κατηγορία), 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.
Ethnikos Piraeus and Olympiacos Piraeus share the most championships, having 38. Ethnikos also has the record for consecutive championships, with 18.

## History

* 1923-27: Panhellenic Championship (held by SEGAS)
* 1927–28 to 1965-66: Panhellenic Championship (held by Hellenic Swimming Federation)
* 1966–67 to 1985-86: A Ethniki (held by Hellenic Swimming Federation)
* 1986–87 to present: A1 Ethniki (held by Hellenic Swimming Federation)

### Title holders

* 1922–23 Peiraikos
* 1925–26 Ethnikos Piraeus
* 1926–27 Olympiacos Piraeus
* 1927–28 Aris Thessaloniki
* 1928–29 Aris Thessaloniki (2)
* 1929–30 Aris Thessaloniki (3)
* 1930–31 Ethnikos Piraeus (2)
* 1931–32 Aris Thessaloniki (4)
* 1932–33 Olympiacos Piraeus (2)
* 1933–34 Olympiacos Piraeus (3)
* 1934–35 NO Patras
* 1935–36 Olympiacos Piraeus (4)
* 1936–37 NO Patras (2)
* 1937–38 NO Patras (3)
* 1938–39 NO Patras (4)
* 1939–40 NO Patras (5)
* 1941–44 Not held due to WW II
* 1944–45 NO Patras (6)
* 1945–46 NO Patras (7)
* 1946–47 Olympiacos Pireaus (5)
* 1947–48 Ethnikos Piraeus (3)
* 1948–49 Olympiacos Piraeus (6)
* 1949–50 NO Patras (8)
* 1950–51 Olympiacos Piraeus (7)
* 1951–52 Olympiacos Piraeus (8)
* 1952–53 Ethnikos Piraeus (4)
* 1953–54 Ethnikos Piraeus (5)
* 1954–55 Ethnikos Piraeus (6)
* 1955–56 Ethnikos Piraeus (7)
* 1956–57 Ethnikos Piraeus (8)
* 1957–58 Ethnikos Piraeus (9)
* 1958–59 Ethnikos Piraeus (10)
* 1959–60 Ethnikos Piraeus (11)
* 1960–61 Ethnikos Piraeus (12)
* 1961–62 Ethnikos Piraeus (13)
* 1962–63 Ethnikos Piraeus (14)
* 1963–64 Ethnikos Piraeus (15)
* 1964–65 Ethnikos Piraeus (16)
* 1965–66 Ethnikos Piraeus (17)
* 1966–67 Ethnikos Piraeus (18)
* 1967–68 Ethnikos Piraeus (19)
* 1968–69 Ethnikos Piraeus (20) & Olympiacos Piraeus (9)
* 1969–70 Ethnikos Piraeus (21)
* 1970–71 Olympiacos Piraeus (10)
* 1971–72 Ethnikos Piraeus (22)
* 1972–73 Ethnikos Piraeus (23)
* 1973–74 Ethnikos Piraeus (24)
* 1974–75 Ethnikos Piraeus (25)
* 1975–76 Ethnikos Piraeus (26)
* 1976–77 Ethnikos Piraeus (27)
* 1977–78 Ethnikos Piraeus (28)
* 1978–79 Ethnikos Piraeus (29)
* 1979–80 Ethnikos Piraeus (30)
* 1980–81 Ethnikos Piraeus (31)
* 1981–82 Ethnikos Piraeus (32)
* 1982–83 Ethnikos Piraeus (33)
* 1983–84 Ethnikos Piraeus (34)
* 1984–85 Ethnikos Piraeus (35)
* 1985–86 ANO Glyfada
* 1986–87 ANO Glyfada (2)
* 1987–88 Ethnikos Piraeus (36)
* 1988–89 ANO Glyfada (3)
* 1989–90 ANO Glyfada (4)
* 1990–91 NO Vouliagmeni
* 1991–92 Olympiacos Piraeus (11)
* 1992–93 Olympiacos Piraeus (12)
* 1993–94 Ethnikos Piraeus (37)
* 1994–95 Olympiacos Piraeus (13)
* 1995–96 Olympiacos Piraeus (14)
* 1996–97 NO Vouliagmeni (2)
* 1997–98 NO Vouliagmeni (3)
* 1998–99 Olympiacos Piraeus (15)
* 1999–00 Olympiacos Piraeus (16)
* 2000–01 Olympiacos Piraeus (17)
* 2001–02 Olympiacos Piraeus (18)
* 2002–03 Olympiacos Piraeus (19)
* 2003–04 Olympiacos Piraeus (20)
* 2004–05 Olympiacos Piraeus (21)
* 2005–06 Ethnikos Piraeus (38)
* 2006–07 Olympiacos Piraeus (22)
* 2007–08 Olympiacos Piraeus (23)
* 2008–09 Olympiacos Piraeus (24)
* 2009–10 Olympiacos Piraeus (25)
* 2010–11 Olympiacos Piraeus (26)
* 2011–12 NO Vouliagmeni (4)
* 2012–13 Olympiacos Piraeus (27)
* 2013–14 Olympiacos Piraeus (28)
* 2014–15 Olympiacos Piraeus (29)
* 2015–16 Olympiacos Piraeus (30)
* 2016–17 Olympiacos Piraeus (31)
* 2017–18 Olympiacos Piraeus (32)
* 2018–19 Olympiacos Piraeus (33)
* 2019–20 Olympiacos Piraeus (34)
* 2020–21 Olympiacos Piraeus (35)
* 2021–22 Olympiacos Piraeus (36)
* 2022–23 Olympiacos Piraeus (37)
* 2023–24 Olympiacos Piraeus (38)

## Titles by club

| No. | Club | Winners | Winning years |
| 1. | Ethnikos Piraeus | 38 | 1926, 1931, 1948, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969*, 1970, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1988, 1994, 2006 |
| 1. | Olympiacos Piraeus | 38 | 1927, 1933, 1934, 1936, 1947, 1949, 1951, 1952, 1969*, 1971, 1992, 1993, 1995, 1996, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| 3. | NO Patras | 8 | 1935, 1937, 1938, 1939, 1940, 1945, 1946, 1950 |
| 4. | Aris Thessaloniki | 4 | 1928, 1929, 1930, 1932 |
| 5. | ANO Glyfada | 4 | 1986, 1987, 1989, 1990 |
| 6. | NO Vouliagmeni | 4 | 1991,1997, 1998, 2012 |
| 7. | Peiraikos | 1 | 1923 |
* The 1969 Championship was shared between Olympiacos and Ethnikos

## Consecutive championships

18 in a row
* Ethnikos Piraeus→1953–1970
14 in a row
* Ethnikos Piraeus→1972-1985
12 in a row
* Olympiacos Piraeus→2013–2024
9 in a row
* Olympiacos Piraeus→1999–2005
6 in a row
* NO Patras→1937–1946
5 in a row
* Olympiacos Piraeus→2007–2011
3 in a row
* Aris Thessaloniki→1928–1930
2 in a row
* Olympiacos→1933–1934, 1951–1952, 1992–1993, 1995–1996
* ANO Glyfada→1986–1987, 1989–1990
* NO Vouliagmeni→1997–1998

## Appearances in A' Ethniki (1967―2024)

A' Ethniki (National Division) started in 1967, but the Greek championship started in 1923 as a Panhellenic Championship. The Hellenic Swimming Federation declares all championship winning teams as champions from 1928 and onwards. Teams in bold participate in the 2023–24 season.
| App | Club |
| 58 | Olympiacos S.F. Piraeus |
| 56 | Ethnikos O.F. Piraeus |
| 49 | Chios Nautical Club |
| 46 | Panathinaikos Athens |
| 45 | Patras Nautical Club |
| 44 | Vouliagmeni Nautical Club |
| 44 | Glyfada Athletic Nautical Club |
| 36 | Palaio Faliro Athletic Club |
| 29 | Chania Nautical Club |
| 29 | P.A.O.K. Thessaloniki |
| 24 | Panionios G.S.S. (Athens) |
| 16 | Iraklis Thessaloniki |
| App | Club |
| 16 | Kerkyra Nautical Athletic Club |
| 14 | Volos - Argonaftes Nautical Club |
| 13 | Kalamaki Nautical Club |
| 10 | Aris Thessaloniki |
| 10 | Ydraikos Nautical Club |
| 8 | O.F. Thalassis Thessaloniki |
| 7 | Chalcis Nautical Club |
| 7 | Ilisiakos Athletic Club Athens |
| 7 | Apollon Smyrnis |
| 6 | Poseidon Ilision SC (Athens) |
| 5 | Patras Nautical Union |
| 5 | E.N.O. Egyptioton Athens |
| App | Club |
| 5 | Peristeri Gymnastic Club |
| 4 | A.E.K. Athens |
| 3 | Argostoli Nautical Club |
| 3 | Nireas Chalandri Athletic Club |
| 3 | Mytilene Nautical Club |
| 3 | G.N.O. Aris Nikaias |
| 2 | Larissa Nautical Club |
| 2 | Nireas Lamia Gymnastic Club |
| 2 | Ilioupolis Gymastic Club (Athens) |
| 2 | O.Y.K. Volos |
| 1 | O.F.I. (Heraklion) |
| 1 | Phoenix Piraeus |

## Greek clubs in European competitions

| Club | Champions League | Champions League | Champions League | Champions League | Euro Cup | Euro Cup | Euro Cup | Euro Cup | Cup Winners' Cup (defunct) | Cup Winners' Cup (defunct) | Cup Winners' Cup (defunct) | Cup Winners' Cup (defunct) | Super Cup | Super Cup | Super Cup |
| Club | C | Years | RU | SF | C | Years | RU | SF | C | Years | RU | SF | C | Years | RU |
| Olympiacos Piraeus | 2 | 2002,2018 | 3 | 1 | – | – | – | – | 0 | | 2 | | 1 | 2002 | 1 |
| Ethnikos Piraeus | 0 | | 0 | 1 | 0 | | 0 | 1 | 0 | | 0 | | – | – | – |
| NO Vouliagmeni | 0 | | 0 | 1 | 0 | | 1 | 2 | 1 | 1997 | 0 | 1 | – | – | – |
| Panionios | 0 | | 0 | 0 | 0 | | 2 | 2 | – | – | – | – | – | – | – |
| NO Patras | – | – | – | – | 0 | | 1 | 0 | – | – | – | – | – | – | – |