Malaysia competed at the 2015 World Aquatics Championships in Kazan, Russia from 24 July to 9 August 2015.

Malaysian divers qualified for the individual spots and the synchronized teams at the World Championships.

[1] Malaysia has qualified one swimmer to compete in the open water marathon.

[2] Malaysian swimmers have achieved qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the A-standard entry time, and 1 at the B-standard):[3][4][5] Malaysia has qualified one synchronized swimmer in the women's solo events.