Two water polo competitions took place as part of the 2023 World Aquatics Championships, and were held between 16 and 29 July 2023 at the Marine Messe Fukuoka in Fukuoka, Japan.
A total of 16 teams qualified for each tournament.
[4] Due the limited budget and the proximity of the date of the championship with the 2023 Pan American Games, Brazil opted for the withdrawal before the tournament and was replaced by Argentina.
Due the limited budget and the proximity of the date of the championship with the 2023 Pan American Games, Brazil withdrew before the tournament and was replaced by Argentina.
* Host nation (Japan)