Swimming at the 2012 European Aquatics Championships – Women's 400 metre individual medley

The women's 400 metre individual medley competition of the swimming events at the 2012 European Aquatics Championships took place May 21. The heats and final took place on May 21.

Records
Prior to the competition, the existing world, European and championship records were as follows.

Heats
19 swimmers participated in 3 heats.

Final
The final was held at 17:31.