| Event: | Women's 100 metre butterfly |
| Competition: | 2020 European Aquatics Championships |
| Venue: | Danube Arena |
| Dates: | 17 May 2021 (heats and semifinals) 18 May 2021 (final) |
| Competitors: | 54 |
| Nations: | 28 |
| Win Value: | 57.37 |
| Gold: | Anna Ntountounaki |
| Gold Nation: | GRE |
| Gold2: | Marie Wattel |
| Gold2 Nation: | FRA |
| Bronze: | Louise Hansson |
| Bronze Nation: | SWE |
| Prev: | 2018 |
| Next: | 2022 |
The Women's 100 metre butterfly competition of the 2020 European Aquatics Championships was held on 17 and 18 May 2021.[1] [2]
Before the competition, the existing world, European and championship records were as follows.
| Name | Nation | Time | Location | Date | |
|---|---|---|---|---|---|
| World record European record | 55.48 | 7 August 2016 | |||
| Championship record | 55.89 | 20 May 2016 |
The heats were started on 17 May at 11:03.[3]
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 6 | 4 | Q | ||||
| 2 | 4 | 4 | Q | ||||
| 3 | 4 | 5 | Q | ||||
| 4 | 5 | 3 | Q | ||||
| 5 | 5 | 4 | Q | ||||
| 6 | 6 | 5 | Q | ||||
| 7 | 5 | 6 | Q | ||||
| 8 | 5 | 5 | Q | ||||
| 9 | 4 | 6 | Q | ||||
| 10 | 4 | 7 | Q | ||||
| 11 | 5 | 7 | Q | ||||
| 11 | 5 | 0 | Q | ||||
| 13 | 6 | 6 | Q | ||||
| 14 | 6 | 3 | Q | ||||
| 15 | 4 | 3 | Q | ||||
| 16 | 5 | 8 | Q | ||||
| 17 | 5 | 2 | |||||
| 18 | 4 | 1 | |||||
| 19 | 3 | 2 | |||||
| 20 | 6 | 7 | |||||
| 21 | 6 | 9 | |||||
| 22 | 4 | 8 | |||||
| 23 | 6 | 1 | |||||
| 24 | 6 | 2 | 1:00.09 | ||||
| 25 | 3 | 7 | 1:00.11 | ||||
| 26 | 2 | 4 | 1:00.28 | ||||
| 27 | 5 | 1 | 1:00.33 | ||||
| 28 | 3 | 4 | 1:00.52 | ||||
| 29 | 4 | 0 | 1:00.54 | ||||
| 30 | 1 | 6 | 1:00.60 | ||||
| 31 | 2 | 5 | 1:00.77 | ||||
| 31 | 2 | 8 | 1:00.77 | ||||
| 33 | 3 | 5 | 1:00.83 | ||||
| 34 | 4 | 9 | 1:00.85 | ||||
| 35 | 5 | 9 | 1:00.96 | ||||
| 36 | 2 | 6 | 1:01.24 | ||||
| 37 | 6 | 0 | 1:01.25 | ||||
| 38 | 3 | 1 | 1:01.42 | ||||
| 38 | 6 | 8 | 1:01.42 | ||||
| 40 | 3 | 3 | 1:01.51 | ||||
| 41 | 2 | 2 | 1:01.63 | ||||
| 42 | 3 | 0 | 1:01.70 | ||||
| 43 | 2 | 3 | 1:01.78 | ||||
| 44 | 3 | 8 | 1:01.90 | ||||
| 44 | 2 | 1 | 1:01.90 | ||||
| 44 | 3 | 9 | 1:01.90 | ||||
| 47 | 3 | 6 | 1:02.43 | ||||
| 48 | 2 | 9 | 1:02.56 | ||||
| 49 | 4 | 2 | 1:02.70 | ||||
| 50 | 2 | 7 | 1:02.76 | ||||
| 51 | 1 | 4 | 1:02.92 | ||||
| 52 | 2 | 0 | 1:03.03 | ||||
| 53 | 1 | 5 | 1:07.27 | ||||
| 54 | 1 | 3 | 1:08.56 |
The semifinals were held on 17 May at 18:32.[4]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 57.48 | Q | |||
| 2 | 5 | 57.62 | Q | |||
| 3 | 3 | 57.88 | q | |||
| 4 | 6 | 58.06 | q | |||
| 5 | 1 | 58.24 | ||||
| 6 | 8 | 58.56 | ||||
| 7 | 2 | 59.27 | ||||
| 8 | 7 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 56.73 | Q | |||
| 2 | 6 | 57.77 | Q, =NR | |||
| 2 | 5 | 57.77 | Q | |||
| 4 | 3 | 57.92 | q | |||
| 5 | 2 | 58.45 | ||||
| 6 | 1 | 58.64 | ||||
| 7 | 7 | 58.85 | ||||
| 8 | 8 | 59.05 |
The final was held on 18 May at 18:18.[5]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 6 | 57.37 | NR | ||||
| 5 | 57.37 | |||||
| 4 | 57.56 | |||||
| 4 | 3 | 57.65 | ||||
| 5 | 7 | 58.05 | ||||
| 6 | 1 | 58.10 | ||||
| 7 | 2 | 58.21 | ||||
| 8 | 8 | 58.41 |