The Great Britain men's national water polo team is the representative for Great Britain in international men's water polo. The team has participated in eleven tournaments at the Summer Olympics, being the dominant team in the sport in the early twentieth century, with four Olympic titles. The only major competition they have ever qualified for was the first world championships in 1973. They qualified for the London 2012 Olympics by virtue of their representing the host country.
The New Zealand men's national water polo team is the representative for New Zealand in international men's water polo.
The Japan men's national water polo team is the representative for Japan in international men's water polo.
The Argentina men's national water polo team is Argentina's representative in international men's water polo.
The Malta men's national water polo team is the representative for Malta in international men's water polo.
Water polo at the 2009 World Aquatics Championships were held from July 19 to August 1, 2009, in Rome, Italy.
The women's water polo tournament at the 2009 World Aquatics Championships, organised by the FINA, was held in Rome, Italy from 19 to 31 July 2009.
The men's water polo tournament at the 2009 World Aquatics Championships, organised by the FINA, was held in Rome, Italy from 20 July to 1 August 2009. All matches were held in a temporary pool at the tennis stadium of the Foro Italico sports complex.
The water polo portion of the 2011 World Aquatics Championships was held between July 17–30 at the Shanghai Oriental Sports Center in Shanghai, China.
The men's water polo tournament at the 2011 World Aquatics Championships, organised by the FINA, was held in Shanghai, China from 18 to 30 July 2011.
The Great Britain women's water polo team is a water polo team that represented Great Britain at the London 2012 Olympics, where they made their Olympic debut.
Water polo in the 2013 World Aquatics Championships was held between 21 July – 3 August at Piscines Bernat Picornell in Barcelona, Spain.
The men's water polo tournament at the 2013 World Aquatics Championships, organised by the FINA, was held in the Piscines Bernat Picornell in Barcelona, Spain from 23 July to 3 August 2013.
The Georgia men's national water polo team represents Georgia in international men's water polo competitions. The team participated at the 2014 European Championship.
Water polo events at the 2017 World Aquatics Championships were held between 16 and 29 July 2017 in Budapest, Hungary.
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.
Water polo at the 2019 World Aquatics Championships was held between 14 and 27 July 2019.
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 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.
