The women's 50 metre breaststroke competition of the 2018 FINA World Swimming Championships (25 m) was held on 11 and 12 December 2018.

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

The heats were started on 11 December at 10:38.

[2] The semifinals were started on 11 December at 19:26.

[4] The final was held on 12 December at 19:41.