2018 FINA World Swimming Championships (25 m) – Women's 100 metre breaststroke

The women's 100 metre breaststroke competition of the 2018 FINA World Swimming Championships (25 m) was held on 14 and 15 December 2018.

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

Heats
The heats were started on 14 December at 10:49.

Semifinals
The semifinals were started on 14 December at 20:42.

Final
The final was held on 15 December at 20:37.