Australia, the previous host of the 2000 Olympics at Sydney, 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.
Kazakhstan competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's third appearance at the Summer Olympics in the post-Soviet era.
Italy competed at the 2004 Summer Olympics in Athens, Greece, from the 13th to the 29th of August 2004. The country has competed at every Summer Olympic games in the modern era, except for the 1904 Summer Olympics in St. Louis. The Italian National Olympic Committee sent the nation's largest ever delegation in history to the Games. A total of 364 athletes, 229 men and 135 women, competed in 27 sports.
Hungary competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. Hungarian athletes have competed at every Summer Olympic Games in the modern era, except the 1920 Summer Olympics in Antwerp, and the 1984 Summer Olympics in Los Angeles because of the Soviet boycott. The Hungarian Olympic Committee sent a total of 209 athletes to the Games, 119 men and 90 women, to compete in 20 sports. Water polo and handball were the only team-based sports in which Hungary had its representation in these Olympic Games. There was only a single competitor in road cycling and mountain biking.
Water polo was contested by men's teams at the 2006 Asian Games in Doha, Qatar from December 6 to December 14, 2006. Ten teams competed in two round robin groups. All games were staged at the Al-Sadd Aquatic Centre.
Final results for the water polo tournament at the 1952 Summer Olympics.
The women's water polo tournament at the 2004 Summer Olympics was contested between August 16 and August 26 at the Olympic Aquatic Centre in the Athens Olympic Sports Complex. Eight teams qualified for the Games, with Italy defeating the host nation Greece for the gold medal. The United States won the bronze medal.
The men's tournament of water polo at the 2008 Summer Olympics at Beijing, People's Republic of China, began on 10 August and lasted until 24 August 2008. All games were held at the Ying Tung Natatorium.
Water polo was contested for men only at the 1986 Asian Games at the Jamsil Indoor Swimming Pool, Seoul, South Korea from 27 September to 2 October 1986.
The water polo tournaments at the 2016 Summer Olympics in Rio de Janeiro took place from 6 to 20 August at the Maria Lenk Aquatics Centre in Barra da Tijuca. Twenty teams competed in the tournament. Games that ended in ties in elimination rounds were decided by shootouts, as overtime has been abolished since 2013.
The United States of America (USA) competed at the 2004 Summer Olympics in Athens, Greece. 533 competitors, 279 men and 254 women, took part in 254 events in 31 sports.
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.
The women's water polo tournament at the 2015 World Aquatics Championships, organised by the FINA, was held in Kazan, Russia from 26 July to 7 August 2015.
Water polo at the 2018 Asian Games was held at the Gelora Bung Karno Aquatic Stadium, Gelora Bung Karno Sports Complex, Jakarta, Indonesia from 16 August to 1 September. Ten countries with 9 men's team and 6 women's team participated in the competition.
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.
This article lists various water polo records and statistics in relation to the Italy men's national water polo team at the Summer Olympics.
This article lists various water polo records and statistics in relation to the Hungary men's national water polo team at the Summer Olympics.