The Men's 100 metre breaststroke competition of the 2022 FINA World Swimming Championships (25 m) was held on 14 and 15 December 2022.

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

The heats were started on 14 December at 12:50.

[3] The semifinals were started on 14 December at 20:57.

[4] The final was held on 15 December at 20:44.