The Women's 100 metre butterfly competition of the 2024 European Aquatics Championships was held on 20 and 21 June 2024.[1][2]
Prior to the competition, the existing world, European and championship records were as follows.
The heats were started on 20 June at 09:55.Qualification Rules: The 16 fastest from the heats qualify to the semifinals.[3]
The semifinals were started on 20 June at 18:51.Qualification Rules: The first 2 competitors of each semifinal and the remaining fastest (up to a total of 8 qualified competitors) from the semifinals advance to the final.[4]
The final was held on 21 June at 18:30.[5]