The heats for the Women's 1500 m Freestyle race at the 2009 World Championships took place on the morning of 27 July and the final was held in the evening session of 28 July at the Foro Italico in Rome, Italy.

Prior to this competition, the existing world and competition records were as follows:

World record	Kate Ziegler (USA)	15:42.54	Mission Viejo, United States	27 June 2007
Championship record	Kate Ziegler (USA)	15:53.05	Melbourne, Australia	27 March 2007

The following records were established during the competition:

More information Date, Round ...

Date	Round	Name	Nationality	Time	Record
28 July	Final	Alessia Filippi	Italy	15:44.93	CR

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• Swimming at the 2007 World Aquatics Championships – Women's 1500 metre freestyle

• 2009 Worlds results: Women's 1500m Free Prelims from OmegaTiming.com (official timer of the 2009 World Championships); retrieved 2009-07-28.
• 2009 Worlds results: Women's 1500m Free Final from OmegaTiming.com (official timer of the 2009 World Championships); retrieved 2009-07-28.