Swimming at the 2009 World Aquatics Championships – Women's 4 × 200 metre freestyle relay
The Women's 4x200m Freestyle Relay at the 2009 World Aquatics Championships took place on July 30, 2009 at the Foro Italico in Rome, Italy.
Medalists
Records
The existing records when the event started were:| Record | Swimmer | Time | Location |
| World record | Stephanie Rice Bronte Barratt Kylie Palmer Linda Mackenzie | 7:44.31 |  Beijing 2008 |
| Championship record | Natalie Coughlin Dana Vollmer Lacey Nymeyer Katie Hoff | 7:50.09 |  Melbourne 2007 |