The water polo competitions at the 2019 SEA Games took place at the New Clark City Aquatics Center, New Clark City, Capas, Tarlac, Philippines. It was one of four aquatic sports at the Games, along with diving, swimming, and open water swimming. The 2019 Games featured one water polo competition each for men's teams and women's teams.
The next water polo competition was in 2023 because it was not part of the 2021 SEA Games.
A total of 101 athletes from 5 nations participated (the numbers of athletes are shown in parentheses). The Filipino, Singaporean and Thai teams entered both the men's and women's competition. All other teams played in men's tournament.
The following is the schedule for the water polo competitions. Men's teams go through a single round robin tournament, while women's teams go through a double round robin tournament.
The tournament featured 5 countries. The format was the same as 2017; there was a group of five with round-robin format. The top three of group received medals.
This tournament featured only 3 countries, unlike the 2017 edition, where there were 5 countries who participated.