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

Lithuanian divers qualified for the individual spots and the synchronized teams at the Worlds through the National Championships.

[1] Lithuanian 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):[2][3] Eight Lithuanian swimmers (six men and two women) have been selected to compete at the World Championships, including defending Olympic champion and world record holder Rūta Meilutytė.

[1][4]