Event Format: Swimmers competed in preliminary heats, semifinals and final. In the preliminary heats the swimmers with the best official starting times were placed in the last three heats. The 16 swimmers with the best time in the preliminary heats advanced to the semifinals. From the semifinals the eight swimmers with the best time in the semifinals advanced to the final.
Event facts: Women's 200 m medley competition was held at the Aquatics Centre, Olympic Park and 34 athletes participated in the event.