Canada at the 2025 World Aquatics Championships

The following Canadian competitors won medals at the Championships. In the by discipline sections below, medallists' names are bolded. ==Athletes by discipline==

The following is the list of number of competitors participating at the Championships per discipline. ==Artistic swimming==

Canada Artistic Swimming named a team of 12 athletes (all women) on July 2, 2025. Scarlett Finn was named to the team but did not compete in any event. ;Women ==Diving==

Diving Canada named a team of ten divers (four men and five women) on July 3, 2025. ;Men ;Women ;Mixed ==High diving==

Diving Canada named a team of three high divers (one man and two women) on July 3, 2025. ==Open water swimming==

Swimming Canada entered two open water swimmers, who also qualified to compete in the pool competitions. Both athletes finished as the top Canadian at the 2025 USA Swimming Open Water National Championships in Sarasota, Florida. ==Swimming==

Swimming Canada entered 26 swimmers (13 per gender) plus the two open water swimmers (one per gender) for a total of 28 swimmers (14 per gender). The team was selected based on the results of the 2025 Canadian Swimming Trials held in Victoria, British Columbia in June 2025. On July 4th it was announced Penny Oleksiak had withdrawn from the team, dropping the team to 27 swimmers (14 men and 13 women). ;Men ;Women ;Mixed • Participated in heats but received medals == Water polo ==

;Summary Men's tournament Canada's men's water polo team qualified by finishing in the top two at the 2024 Pan American Water Polo Championship in Ibagué, Colombia. ;Team roster The team of 14 athletes was named on June 27, 2025. • Jérémie Côté • Bogdan Djerkovic • Reuel D'Souza • Aleksa Gardijan • Andrej Gavric • Nikolas Gerakoudis • Leo Hachem • David Lapins • Brody Mcknight • Jason O’Donnell • Roko Pozaric • Milan Radenovic • Aria Soleimanipak • Bor Tanasijevic ;Group play ;Playoffs ;9th–12th place semifinals ;11th place match ==References==