Croatia is scheduled to compete at the 2017 World Aquatics Championships in Budapest, Hungary from 14 July to 30 July.

Croatia has entered 2 divers (one male and one female).

[1] Croatia has entered one open water swimmer[2][3] Croatian 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):[4] Croatia's synchronized swimming team consisted of 10 athletes (10 female).

[5] Legend: (R) = Reserve Athlete Croatia qualified a men's team.

[6]