Swimming at the 2024 World Aquatics Championships – Men's 100 metre breaststroke

The Men's 100 metre breaststroke competition at the 2024 World Aquatics Championships was held on 11 and 12 February 2024.

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

Heats
The heats were started on 11 February at 11:10.

Semifinals
The semifinals were started on 11 February at 19:50.

Final
The final was held on 12 February at 19:02.