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

Greece nominated two athletes to participate.

[1] Greece nominated four athletes (two men and two women) to participate.

[2] Greek 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] Greece has qualified thirteen synchronized swimmers.

[5] * Reserves The following is the Greek roster in the men's water polo tournament of the 2013 World Aquatic championships.