The Women's 50 metre butterfly competition of the 2020 European Aquatics Championships was held on 22 and 23 May 2021.

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

The heats were started on 22 May 2021 at 10:27.

[3] The semifinals were started on 22 May at 18:40.

[4] The final was held on 23 May at 18:00.