Malaysia competed at the 2013 World Aquatics Championships in Barcelona, Spain between 19 July and 4 August 2013.

Malaysia qualified 8 divers for the following events.

[1] Malaysia qualified one quota place for the following event in open water swimming.

[2] Malaysian swimmers earned 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]