Swimming at the 2018 European Aquatics Championships – Men's 100 metre breaststroke

The Men's 100 metre breaststroke competition of the 2018 European Aquatics Championships was held on 3 and 4 August 2018. It was won by Adam Peaty in a world record time of 57.10.

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

The following new records were set during this competition.

Heats
The heats were started on 3 August at 10:46.

Semifinals
The semifinals were held on 3 August at 17:39.

Swim-off
The swim-off was held on 3 August at 18:34.

Final
The final was held on 4 August at 17:13.