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

Ukraine qualified 12 quota places for the following diving events.

[1] Ukraine has qualified two athletes in high diving.

[2][3] Ukraine qualified three quota places for the following events in open water swimming.

[4] Ukrainian 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):[5][6] Ukraine has qualified twelve synchronized swimmers.