Greece was the host country for the 2004 Summer Olympics in Athens, from 13 to 29 August 2004. As the progenitor nation and in keeping with tradition, Greek athletes have competed at every Summer Olympics in the modern era, alongside Australia, Great Britain, and Switzerland. The Hellenic Olympic Committee fielded a total of 426 athletes to the Games, 215 men and 211 women, and had achieved automatic qualification places in all sports, with the exception of men's and women's field hockey. It was also the nation's largest team ever in Summer Olympic history since the first modern Games were held in 1896.
Australia competed at the 2004 Summer Olympics in Athens, Greece from 13 to 29 August 2004. Australian athletes have competed in every Summer Olympic Games of the modern era. The Australian Olympic Committee sent a total of 470 athletes to the Games to compete in 29 sports.
Final results for the water polo tournament at the 1952 Summer Olympics.
The water polo tournaments at the 2020 Summer Olympics took place at the Tokyo Tatsumi International Swimming Center in Kōtō. Twenty-two teams competed in the tournament, an increase of two from the previous editions. Men's Water polo was also the last final played before the closing ceremony.
Croatia competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's seventh consecutive appearance at the Summer Olympics. The Croatian Olympic Committee confirmed a roster of 87 athletes, 68 men and 19 women, to compete across 18 sports at the Games.
The men's tournament of Water polo at the 2016 Summer Olympics at Rio de Janeiro, Brazil, began on 6 August and ended on 20 August 2016. Games were held at the Maria Lenk Aquatics Centre and the Olympic Aquatics Stadium.
Montenegro competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's third consecutive appearance at the Summer Olympics since it gained independence from Serbia in 2006.
The men's water polo tournament at the 2017 World Aquatics Championships, organised by the FINA, was held in Budapest, Hungary from 17 to 29 July 2017.
The men's tournament of water polo at the 2020 Summer Olympics at Tokyo, Japan began on 25 July and ended on 8 August 2021. It was held at the Tokyo Tatsumi International Swimming Center. It was the 27th official appearance of the tournament, which was not held in 1896 and was a demonstration sport in 1904 but otherwise had been held at every Olympics.
The women's tournament of water polo at the 2020 Summer Olympics at Tokyo, Japan was played from 24 July to 7 August 2021 at the Tokyo Tatsumi International Swimming Center. It was the sixth appearance of the women's tournament, which had been held consecutively since 2000 and also was the first time on history that the tournament had 10 teams competing.
The men's water polo tournament at the 2019 World Aquatics Championships, organised by the FINA, was held in Gwangju, South Korea from 15 to 27 July. This was the eighteenth time that the men's water polo tournament has been played since the first edition in 1973.
The 2020 Men's Water Polo Olympic Qualification Tournament took place from 14 to 21 February 2021 in Rotterdam, Netherlands. The top three teams advanced to the Olympics.
The 2020 Women's Water Polo Olympic Qualification Tournament took place in Trieste, Italy. The top two teams advanced to the Olympics.
Greece competed at the 2024 Summer Olympics in Paris, from 26 July to 11 August 2024, with a team of 101 athletes in 17 sports. Greek athletes have appeared in every Summer Olympic Games of the modern era, alongside Australia, France, Great Britain, and Switzerland. As the progenitor nation of the Olympic Games and in keeping with the tradition, Greece entered first at Place du Trocadéro during the parade of nations segment of the opening ceremony.
The men's water polo tournament at the 2022 World Aquatics Championships was held from 21 June to 3 July 2022 in Budapest, Hungary. This was the 19th time that the men's water polo tournament has been played since the first edition in 1973.
The water polo tournaments at the 2024 Summer Olympics in Paris were held from 27 July to 11 August. Preliminary water polo matches occurred at Paris Aquatic Centre, with the final playoffs staged at the iconic Paris La Défense Arena. Similar to the previous edition, twenty-two teams competed against each other in their respective tournaments.
The women's tournament of water polo at the 2024 Summer Olympics at Paris, France was held from 27 July to 10 August 2024. It was held at the Paris Aquatic Centre and Paris La Défense Arena. It is the seventh official appearance of the tournament.
The men's water polo tournament at the 2024 World Aquatics Championships was held from 5 to 17 February 2024 in Doha. This was the 21st time that the men's water polo tournament has been played since the first edition in 1973.
The women's water polo tournament at the 2024 World Aquatics Championships was held from 4 to 16 February 2024 in Doha. This was the 17th time that the women's water polo tournament has been played since the first edition in 1986.
France 
Serbia (3rd title)
Croatia 
United States 
Hungary 
