Canada competed at the 2017 World Aquatics Championships in Budapest, Hungary from 14 July to 30 July.
Canada was scheduled to compete in all six disciplines and its team consisted of 84 athletes (31 men and 53 women). However, only 83 competed across five disciplines because high diver Lysanne Richard withdrew from competition.
Medallists
Competitors
| width=78% align=left valign=top |
The following is the list of number of competitors participating at the Championships per discipline.
Diving
Canada has entered 11 divers (five male and six female). Canada will compete in all events except the men's 10 metres synchronized platform and the team event.
Men
Women
Mixed
High diving
Canada qualified one female high diver. Lysanne Richard had to withdraw from the competition after sustaining a neck injury.
Open water swimming
Canada's open water swimming team was named on April 9, 2017. The team consists of six athletes (three men and three women).
Swimming
Canada's swimming team was named on April 9, 2017, after the conclusion of the Canadian Swimming trials in Victoria, British Columbia. A total of 26 swimmers (17 women and 9 men) were named to the team. To qualify for the team, an athlete had to place in the top two of their event and also meet the a standard time set by FINA. Notable absentees to the team include, 2015 World Championship bronze medalist Emily Overholt, multiple time 2015 Pan American Games medalists Santo Condorelli and multiple World and Olympic medalist Ryan Cochrane (who retired after the 2016 Summer Olympics).
Men
Women
Mixed
Synchronized swimming
Canada's synchronized swimming team consisted of 14 athletes (1 male and 13 female).
Women
Mixed
Legend: (R) = Reserve Athlete
Water polo
Canada has qualified both a men's and women's teams. The roster of both teams (with each consisting of 13 athletes each) was announced on July 12, 2017.
Men's tournament
Canada's men's water polo team qualified for the World Championships with a silver medal performance at the 2017 UANA Cup in Couva, Trinidad and Tobago.