The Women's 400m Individual Medley (IM) at the 2007 World Aquatics Championships took place on 1 April (prelims & finals) at the Rod Laver Arena in Melbourne, Australia. As the event was over 200 meters in length, no semifinals were held in it and the top 8 swimmers from the preliminary heats advance directly to the single final heat. 40 swimmers were entered in the event, of which 48 swam.
Women's 400m IM Preliminary results from the 2007 World Championships. Published by OmegaTiming.com (official timer of the '07 Worlds); Retrieved 2009-07-11.
Women's 400m Medley Final results from the 2007 World Championships. Published by OmegaTiming.com (official timer of the '07 Worlds); Retrieved 2009-07-11.