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

Australia sent a team of eight divers to compete for the individual and synchronized events at the World Championships.

[1] Australia fielded a full team of eight swimmers to compete in the open water marathon.

Thirty-six swimmers (22 men and 24 women) have been selected to compete for the Australian team, including defending World champions Christian Sprenger in the 100 m breaststroke and Cate Campbell in the 100 m freestyle.

[4][5] 2012 Olympic silver medalist and two-time reigning World champion James Magnussen was set to compete, but later withdrew from the team because of a shoulder injury, having been ruled out to defend his Worlds title in the 100 m freestyle.