Water polo at the World Aquatics Championships is an international water polo tournament held every two years as part of the World Aquatics Championships. The reigning champions are Croatia in men's and the United States in women's competition.
The 2001 Women's World Water Polo Championship was the fifth edition of the women's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA. The tournament was held from 18 to 27 July 2001 in the Nishi Civic Pool, and was incorporated into the 2001 World Aquatics Championships in Fukuoka, Japan.
The 1986 Women's World Water Polo Championship was the first edition of the women's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA. The tournament was held from 14 to 22 August 1986, and was incorporated into the 1986 World Aquatics Championships in Madrid, Spain.
The 1991 Women's World Water Polo Championship was the second edition of the women's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA. The tournament was held from 3 to 13 January 1991, and was incorporated into the 1991 World Aquatics Championships in Perth, Western Australia.
The 1998 Women's World Water Polo Championship was the fourth edition of the women's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA. The tournament was held from 8 to 16 January 1998 in the Challenge Stadium, and was incorporated into the 1998 World Aquatics Championships in Perth, Western Australia.
The 1994 Men's World Water Polo Championship was the seventh 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 11 September 1994, and was incorporated into the 1994 World Aquatics Championships in Rome, Italy.
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 Greece men's national water polo team represents Greece in international men's water polo competitions and it is organized and run by the Hellenic Swimming Federation.
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.
Water polo at the 2009 World Aquatics Championships were held from July 19 to August 1, 2009, in Rome, Italy.
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 FINA Water Polo World Rankings is a ranking system for men's and women's national teams in water polo. The teams of the member nations of FINA, water polo's world governing body, are ranked based on their competitions results with the most successful teams being ranked highest.
The women's water polo tournament at the 2022 World Aquatics Championships is held from 20 June to 2 July 2022. This is the 15th time that the women's water polo tournament has been played since the first edition in 1986.
The 2023 Men's FINA Water Polo World Cup was the 17th edition of the tournament. It ran from 8 March to 2 July 2023. The Super final took place between 30 June and 2 July 2023 in Los Angeles, United States.
The 2023 FINA Women's Water Polo World Cup was the 18th edition of the tournament. It ran from 11 April to 25 June 2023. The Super final took place between 23 and 25 June 2023 in Long Beach, United States.
Italy 
