Malaysia Swimming Federation (Malay: Persekutuan Renang Malaysia) is the national governing body of swimming, water polo, synchronised swimming, diving and open water in Malaysia.

Founded as the Amateur Swimming Union of Malaysia (ASUM) (Malay: Persatuan Renang Amatur Malaysia), the body adopted its current name in July 2020.

[1] It is charged with selecting Malaysia Olympic Swimming team and any other teams which officially represent Malaysia, as well as the overall organization and operation of the sport within the country.

[citation needed] Amateur Swimming Union of Malaysia organises championships every year in each of the sporting disciplines.

Malaysia Open Swimming Championships (50 m) are usually held in May each year.