The Men's 100 metre breaststroke competition at the 2022 World Aquatics Championships was held on 18 and 19 June 2022.

[1][2] Prior to the competition, the existing world and championship records were as follows.

The heats were started on 18 June at 10:36.

[3] The semifinals were started on 18 June at 18:53.

[4] The final was held on 19 June at 18:02.