Swimming at the 2018 European Aquatics Championships – Men's 400 metre individual medley

The Men's 400 metre individual medley competition of the 2018 European Aquatics Championships was held on 9 August 2018.

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

Heats
The heats were started at 09:00.

Final
The final was started at 17:27.