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.
History
The history of water polo as a team sport began in mid-19th century England and Scotland, where water sports were a feature of county fairs and festivals. Water polo has been included in every Summer Olympic Games as a men's competition sport, except 1896. Women's water polo made its debut in the Summer Olympics in 2000.

Beginnings
Men's water polo was among the first team sports introduced at the modern Olympic Games in 1900. Seven European teams from four countries, including four from the host nation France, took part in the competition. The British team was the inaugural champion.

At the 1904 Summer Olympics, a water polo tournament was contested, three club teams of seven players each entered. A German team tried to enter, but its entry was refused because the players did not play for the same club. The event took place in a pond in Forest Park, the location of both the Olympics and the World's Fair. Previously, the International Olympic Committee and International Swimming Federation (FINA) considered the water polo event at the 1904 Olympics as a demonstration sport. However, in July 2021, after accepting the recommendation of Olympic historian Bill Mallon, the IOC recognized water polo along with several others as an official sport of the 1904 Olympic program. Water polo was not played at the 1906 Olympics.

From 1908 to 1920, the Great Britain men's national water polo team won three consecutive gold medals at the Olympics, becoming the first water polo team to have an Olympic winning streak (winning three or more Olympic titles in a row).
Hungarian dominance
Hungary men's national water polo team has participated in 22 of 27 Olympic tournaments, with fifteen Olympic medals (nine gold, three silver and three bronze). From 1928 to 1980, the Hungarians won twelve consecutive medals in water polo. Twenty years later, the team won three golds in a row between 2000 and 2008, becoming the second team to have an Olympic winning streak in water polo.
Blood in the Water match
The most famous water polo match in Olympic history often referred to as the Blood in the Water match, was a 1956 Summer Olympics semi-final match between Hungary and the Soviet Union, played in Melbourne on 6 December 1956. As the athletes left for the games, the Hungarian revolution began, and the Soviet army crushed the uprising. The match was bloody and violent. The Hungarians defeated the Soviets 4–0 before the game was called off in the final minute to prevent angry Hungarians in the crowd reacting to Soviet player Valentin Prokopov punching Hungarian player Ervin Zádor. Pictures of Zádor's injuries were published around the world, leading to the "Blood in the Water" moniker.
The Hungarians went on to win the Olympic gold medal by defeating Yugoslavia 2–1 in the final.
Addition of women's program
Women's water polo became an Olympic sport at the 2000 Sydney Olympics. Six nations competed in the women's tournament with home team Australia winning the gold medal over the United States.
From 2012 to 2021, the United States women's team won three consecutive gold medals at the Summer Olympics, becoming the first women's water polo team to have an Olympic winning streak.
Geography
Water polo is now popular in many countries around the world, notably Europe (particularly in Croatia, France, Germany, Greece, Hungary, Italy, Malta, Montenegro, the Netherlands, Romania, Russia, Serbia and Spain), Australia, Brazil, Canada and the United States.
As of the 2020 Summer Olympics, 51 National Olympic Committees (NOCs) from six continents have sent their water polo teams to the Olympic Games. Men's water polo teams of European NOCs won all 27 official tournaments, while women's teams from Europe, North America and Oceania won all six gold medals. Water polo teams from Africa, Asia and South America have not won an Olympic medal yet.
Venues
For the Summer Olympics, there are 34 venues that have been or will be used for water polo.
The Seine in Paris hosted the first water polo competitions at the 1900 Olympics. The Forest Park in St. Louis hosted the water polo events for the 1904 Summer Olympics.





