2007 World Aquatics Championships

12th FINA World Championships
Host cityMelbourne, Victoria, Australia
Date(s)17 March – 1 April 2007
Officially opened byMichael Jeffery

The 2007 World Aquatics Championships, or the XII FINA World Championships, were held in Melbourne, Australia from 17 March to 1 April 2007. The competition took place at three locations in central Melbourne: the Melbourne Sports and Aquatic Centre (diving and water polo), St Kilda Beach (open water), and Rod Laver Arena in a temporary pool christened the Susie O'Neill Pool (synchro and swimming).

A total of 2,158 athletes from 167 nations participated in the 2007 championships. The total number of spectators was more than 215,000, setting a new record attendance for the event. FINA President Mustapha Larfaoui described the competition as "the biggest and best in history."