Water polo at the World Aquatics Championships is an international water polo tournament held every two years as part of the FINA World Aquatics Championships. The reigning champions are Spain in men's and the United States in women's competition.
The water polo tournament at the 1984 Summer Olympics was held from 1 to 10 August 1984, at the Raleigh Runnels Memorial Pool in Malibu, California. The tournament featured 12 teams, playing two rounds of round-robin play: preliminaries and finals.
The 2007 World Aquatics Championships, or the XII FINA World Championships, were held in Melbourne, Australia from 17 March to 1 April 2007. The competition took place at three locations in central Melbourne: the Melbourne Sports and Aquatic Centre, St Kilda Beach, and Rod Laver Arena in a temporary pool christened the Susie O'Neill Pool.
The 1998 Men's World Water Polo Championship was the eighth edition of the men's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA. The tournament was held from 7 to 18 January 1998 in the Challenge Stadium, and was incorporated into the 1998 World Aquatics Championships in Perth, Western Australia.
The 2001 Men's World Water Polo Championship was the ninth edition of the men's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA. The tournament was held from 19 to 29 July 2001, and was incorporated into the 2001 World Aquatics Championships in Fukuoka, Japan.
The 1973 Men's World Water Polo Championship was the first edition of the men's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA. The tournament was held from 1 to 9 September 1973, and was incorporated into the inaugural 1973 World Aquatics Championships in Belgrade, Yugoslavia.
The 1975 Men's World Water Polo Championship was the second edition of the men's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA. The tournament was held from 19 to 26 July 1975, and was incorporated into the 1975 World Aquatics Championships in Cali, Colombia.
The Italian national water polo team represents Italy in men's international water polo competitions and is controlled by Federnuoto. The national men's team has the nickname of "Settebello", a reference to both the Italian card game scopa and a standard water polo team having seven players.
The 1978 Men's World Water Polo Championship was the third edition of the men's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA. The tournament was held from 19 to 27 August 1978, and was incorporated into the 1978 World Aquatics Championships in West Berlin, West Germany.
The Russia men's national water polo team is the representative for Russia in international men's water polo. The team is a successor of the Soviet water polo team.
The 1982 Men's World Water Polo Championship was the fourth edition of the men's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA. The tournament was held from 29 July to 8 August 1982, and was incorporated into the 1982 World Aquatics Championships in Guayaquil, Ecuador.
The 1986 Men's World Water Polo Championship was the fifth edition of the men's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA. The tournament was held from 13 to 23 August 1986, and was incorporated into the 1986 World Aquatics Championships in Madrid, Spain.
The women's water polo tournament at the 2000 Summer Olympics in Sydney, Australia, was held from 16 to 23 September 2000, with six teams competing in the debut tournament. The games were held at the Ryde Aquatic Centre and the Sydney Olympic Aquatic Centre. It was the first time in history that women's water polo officially competed at the Summer Olympics.
Italy (in Rome host cities)
Spain 
Russia 
Croatia 
