Open water swimming at the 2009 World Aquatics Championships

The Open Water Swimming competition at the 2009 World Aquatics Championships were held from 21 to 25 July at the beach of Ostia in Rome.

Schedule
Note: Originally, the Open water events were scheduled to occur on Sunday, July 19 (5K), Tuesday, July 21 (women's 10K) and Thursday, July 23 (women's 25K); however the FINA Bureau on July 18, 2009, altered the open water schedule due to weather conditions in Ostia.