# Swimming at the 2024 European Aquatics Championships – Women's 100 metre butterfly

The Women's 100 metre butterfly competition of the 2024 European Aquatics Championships was held on 20 and 21 June 2024.

## Records

Prior to the competition, the existing world, European and championship records were as follows.
| | Name | Nationality | Time | Location | Date |
| World record | Gretchen Walsh | United States | 55.18 | Indianapolis | 15 June 2024 |
| European record | Sarah Sjöström | Sweden | 55.48 | Rio de Janeiro | 7 August 2016 |
| Championship record | Sarah Sjöström | Sweden | 55.89 | London | 20 May 2016 |

## Results
### Heats

The heats were started on 20 June at 09:55. Qualification Rules: The 16 fastest from the heats qualify to the semifinals.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | 5 | Paulina Peda | Poland | 58.14 | Q |
| 2 | 3 | 3 | Roos Vanotterdijk | Belgium | 58.45 | Q |
| 3 | 4 | 6 | Georgia Damasioti | Greece | 58.54 | Q |
| 4 | 3 | 5 | Sara Junevik | Sweden | 58.82 | Q |
| 5 | 3 | 4 | Anna Ntountounaki | Greece | 58.83 | Q |
| 6 | 2 | 4 | Helena Rosendahl Bach | Denmark | 58.90 | Q |
| 7 | 2 | 5 | Wiktoria Piotrowska | Poland | 59.10 | Q |
| 8 | 4 | 3 | Amina Kajtaz | Croatia | 59.15 | Q |
| 9 | 3 | 6 | Lucy Grieve | Great Britain | 59.23 | Q |
| 10 | 2 | 3 | Panna Ugrai | Hungary | 59.48 | Q |
| 11 | 4 | 4 | Lana Pudar | Bosnia and Herzegovina | 59.54 | Q |
| 12 | 4 | 1 | Zuzanna Famulok | Poland | 59.59 | |
| 13 | 3 | 2 | Julia Ullmann | Switzerland | 59.68 | Q |
| 14 | 2 | 7 | Laura Lahtinen | Finland | 59.72 | Q |
| 15 | 3 | 7 | Aliisa Soini | Finland | 59.73 | Q |
| 16 | 2 | 2 | Iris Julia Berger | Austria | 59.85 | Q |
| 17 | 4 | 7 | Ariel Hayon | Israel | 59.94 | Q |
| 18 | 4 | 2 | Julia Maik | Poland | 1:00.37 | |
| 19 | 4 | 8 | Edith Jernstedt | Sweden | 1:00.43 | |
| 20 | 3 | 1 | Schastine Tabor | Denmark | 1:01.19 | |
| 21 | 2 | 8 | Fabienne Pavlik | Austria | 1:01.22 | |
| 22 | 3 | 8 | Zora Ripková | Slovakia | 1:01.25 | |
| 23 | 1 | 4 | Daryna Nabojčenko | Czech Republic | 1:01.26 | |
| 24 | 3 | 0 | Varsenik Manucharyan | Armenia | 1:01.48 | |
| 25 | 2 | 1 | Hana Sekuti | Slovenia | 1:01.96 | |
| 26 | 2 | 0 | Mariam Sheikhalizadeh | Azerbaijan | 1:02.55 | |
| 27 | 1 | 5 | Fanny Borer | Switzerland | 1:03.88 | |
| 28 | 4 | 9 | Mia Blaževska Eminova | North Macedonia | 1:04.13 | |
| 29 | 1 | 3 | Yeva Karapetyan | Armenia | 1:04.71 | |
| | 2 | 6 | Lora Komoróczy | Hungary | DNS | DNS |
| | 4 | 0 | Mina Kaljević | Serbia | DNS | DNS |

### Semifinals

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.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 4 | Roos Vanotterdijk | Belgium | 57.89 | Q |
| 2 | 2 | 5 | Georgia Damasioti | Greece | 58.00 | Q |
| 3 | 1 | 5 | Sara Junevik | Sweden | 58.23 | Q |
| 4 | 1 | 3 | Helena Rosendahl Bach | Denmark | 58.24 | Q |
| 5 | 2 | 3 | Anna Ntountounaki | Greece | 58.41 | Q |
| 6 | 2 | 4 | Paulina Peda | Poland | 58.47 | Q |
| 7 | 1 | 6 | Amina Kajtaz | Croatia | 58.55 | Q |
| 8 | 2 | 7 | Lana Pudar | Bosnia and Herzegovina | 58.63 | Q |
| 9 | 2 | 6 | Wiktoria Piotrowska | Poland | 58.69 | |
| 10 | 2 | 8 | Ariel Hayon | Israel | 58.78 | |
| 11 | 1 | 1 | Iris Julia Berger | Austria | 58.94 | |
| 12 | 2 | 2 | Lucy Grieve | Great Britain | 59.07 | |
| 13 | 1 | 2 | Panna Ugrai | Hungary | 59.10 | |
| 14 | 1 | 7 | Julia Ullmann | Switzerland | 59.32 | |
| 15 | 2 | 1 | Aliisa Soini | Finland | 59.61 | |
| 16 | 1 | 8 | Edith Jernstedt | Sweden | 59.78 | |

### Final

The final was held on 21 June at 18:30.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Roos Vanotterdijk | Belgium | 57.47 | NR |
| | 5 | Georgia Damasioti | Greece | 57.74 | |
| | 3 | Sara Junevik | Sweden | 58.06 | |
| 4 | 6 | Helena Rosendahl Bach | Denmark | 58.27 | |
| 5 | 2 | Anna Ntountounaki | Greece | 58.34 | |
| 6 | 1 | Amina Kajtaz | Croatia | 58.79 | |
| 7 | 7 | Paulina Peda | Poland | 58.82 | |
| 8 | 8 | Lana Pudar | Bosnia and Herzegovina | 59.01 | |