The Women's 100 metre butterfly competition of the 2024 World Aquatics Swimming Championships (25 m) was held on 13 and 14 December 2024.

[1] Prior to the competition, the existing world and championship records were as follows: The following records were established during the competition: The heats were started on 13 December at 10:01.

[2] The semifinals were started on 13 December at 18:20.

[3] The final was held on 14 December at 17:32.

[4]