The Women's 50 metre butterfly competition of the 2024 World Aquatics Swimming Championships (25 m) was held on 10 and 11 December 2024.

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

The following new records were set during this competition: The heats were started on 10 December at 10:11.

[2] The semifinals were started on 10 December at 17:43.

[3] The swim-off was held on 10 December at 19:47.