Water polo, Greece, A1 Ethniki - Greece national water polo champions

1927 Olympiacos
1928 Aris
1929 Aris
1930 Aris
1931 Ethnikos Piraeus
1932 Aris
1933 Olympiacos
1934 Olympiacos
1935 NO Patras
1936 Olympiacos
1937 NO Patras
1938 NO Patras
1939 NO Patras
1940 NO Patras
1945 NO Patras
1946 NO Patras
1947 Olympiacos
1948 Ethnikos Piraeus
1949 Olympiacos
1950 NO Patras
1951 Olympiacos
1952 Olympiacos
1953 Ethnikos Piraeus
1954 Ethnikos Piraeus
1955 Ethnikos Piraeus
1956 Ethnikos Piraeus
1957 Ethnikos Piraeus
1958 Ethnikos Piraeus
1959 Ethnikos Piraeus
1960 Ethnikos Piraeus
1961 Ethnikos Piraeus
1962 Ethnikos Piraeus
1963 Ethnikos Piraeus
1964 Ethnikos Piraeus
1965 Ethnikos Piraeus
1966 Ethnikos Piraeus
1967 Ethnikos Piraeus
1968 Ethnikos Piraeus
1969 Ethnikos Piraeus/Olympiacos
1970 Ethnikos Piraeus
1971 Olympiacos
1972 Ethnikos Piraeus
1973 Ethnikos Piraeus
1974 Ethnikos Piraeus
1975 Ethnikos Piraeus
1976 Ethnikos Piraeus
1977 Ethnikos Piraeus
1978 Ethnikos Piraeus
1979 Ethnikos Piraeus
1980 Ethnikos Piraeus
1981 Ethnikos Piraeus
1982 Ethnikos Piraeus
1983 Ethnikos Piraeus
1984 Ethnikos Piraeus
1985 Ethnikos Piraeus
1986 Glyfada
1987 Glyfada
1988 Ethnikos Piraeus
1989 Glyfada
1990 Glyfada
1991 Vouliagmeni
1992 Olympiacos
1993 Olympiacos
1994 Ethnikos Piraeus
1995 Olympiacos
1996 Olympiacos
1997 Vouliagmeni
1998 Vouliagmeni
1999 Olympiacos
2000 Olympiacos
2001 Olympiacos
2002 Olympiacos
2003 Olympiacos
2004 Olympiacos
2005 Olympiacos
2006 Ethnikos Piraeus
2007 Olympiacos
2008 Olympiacos
2009 Olympiacos
2010 Olympiacos
2011 Olympiacos

The current A1 Ethniki league started in 1986. Previously, the Greek water polo league was known as Panhelladiko Championship (1926 - 1927), Panhellenic Championship (1927 - 1966) and A Ethniki (1966 - 1986).