Water polo has been part of the Summer Olympics program since the second games, in 1900. A women's water polo tournament was introduced for the 2000 Summer Olympics. Hungary has been the most successful country in men's tournament, while the United States is the only team to win multiple times at the women's tournament since its introduction. Italy is the first and only country to win both the men's and women's water polo tournaments.
Rita Keszthelyi is a Hungarian water polo player. At the 2012, 2016 and 2020 Summer Olympics, she competed for the Hungary women's national water polo team in the women's tournament.
Edina Gangl is a Hungarian water polo goalkeeper. At the 2012, 2016 and 2020 Summer Olympics, she competed for the Hungary women's national water polo team in the women's tournament.
Margaret Ann Steffens is an American professional water polo player. She won the gold medal with the United States at the 2012, 2016 and 2020 Summer Olympics. At the 2020 Summer Olympics, Steffens set a new Olympic record for the most goals scored by an individual player in women's water polo at the Olympic Games.
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.
Gabriella Szűcs is a Hungarian water polo player. At the 2012, 2016 and 2020 Summer Olympics, she competed for the Hungary national team in the women's tournament.
Anna Krisztina Illés is a Hungarian water polo player. At the 2016 and the 2020 Summer Olympics she competed for the Hungary national team in the women's tournament.
Krisztina Garda is a Hungarian water polo player. At the 2016 and the 2020 Summer Olympics she competed for the Hungary women's national water polo team in the women's tournament.
Hungary competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. Hungarian athletes have appeared in every edition of the Summer Olympic Games, except for two occasions. Hungary was not invited to the 1920 Summer Olympics in Antwerp, because of its role in the first World War, and was also part of the Soviet boycott, when Los Angeles hosted the 1984 Summer Olympics.
The United States of America (USA), represented by the United States Olympic & Paralympic Committee (USOPC), competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place in the summer of 2020, the Games were postponed to July 23 to August 8, 2021, due to the COVID-19 pandemic. U.S. athletes have appeared in every Summer Olympic Games of the modern era, with the exception of the 1980 Summer Olympics in Moscow, which the U.S. boycotted in protest of the Soviet invasion of Afghanistan. The opening ceremony flag-bearers for the United States were baseball player Eddy Alvarez and basketball player Sue Bird. Javelin thrower Kara Winger was the flag-bearer for the closing ceremony. For the third consecutive time in the Summer Olympics, the United States was represented by more female than male athletes (285 men and 330 women).
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.
Dorottya Szilágyi is a Hungarian water polo player. At the 2020 Summer Olympics she competed for the Hungary women's national water polo team in the women's tournament.
Gréta Gurisatti is a Hungarian water polo player. At the 2020 Summer Olympics she competed for the Hungary women's national water polo team in the women's tournament.
Dóra Leimeter is a Hungarian water polo player. At the 2020 Summer Olympics she competed for the Hungary women's national water polo team in the women's tournament.
These are the rosters of all participating teams at the women's water polo tournament at the 2020 Summer Olympics in Tokyo. The ten national teams were required to submit squads of 12 players. Additionally, teams could name one alternate player. In the event that a player on the submitted squad list suffered an injury or illness, that player would be able to be replaced by the player in the alternate list. On 3 July 2021, the International Olympic Committee (IOC) confirmed that there was a change for the 2020 Summer Olympics, allowing all 13 water polo players named to be available on the roster, with 12 being named for each match. This change was implemented due to the challenges of the COVID-19 pandemic. As of 7 August 2021, all players competed in the women's tournament.
Alda Magyari is a Hungarian water polo goalkeeper.
Anikó Gyöngyössy is a Hungarian water polo player. A centre-forward, she played for BVSC-Zugló until 2022. At the 2020 Summer Olympics she competed for the Hungary women's national water polo team in the women's tournament.
Vanda Vályi is a Hungarian water polo player. At the 2020 Summer Olympics she competed for the Hungary women's national water polo team in the women's tournament.
Natasa Rybanska is a Slovak-born Hungarian water polo player. At the 2020 Summer Olympics she competed for the Hungary women's national water polo team in the women's tournament.
