The swimming competitions at the 2025 SEA Games will take place in Bangkok, Thailand from 10 to 15 December 2025.
Despite stronger competition, Singapore continued its record run as Southeast Asia's leading swimming nation. The team won a total of 34 medals, comprising 19 gold, 8 silver and 7 bronze, with its gold tally exceeding that of the nearest country by more than threefold.
10 nations will compete in swimming.