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

Mexico has qualified 13 divers.

[1] Mexico qualified 2 high divers.

[2] Mexico qualified 6 open water swimmers.

[3] Mexican 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):[4][5] Mexico has qualified 13 synchronized swimmers.