# 2024 World Aquatics Swimming Championships (25 m) – Women's 100 metre butterfly

The Women's 100 metre butterfly competition of the 2024 World Aquatics Swimming Championships (25 m) was held on 13 and 14 December 2024.

## Records

Prior to the competition, the existing world and championship records were as follows:
| World record | Maggie Mac Neil (CAN) | 54.05 | Melbourne, Australia | 18 December 2022 |
| Competition record | Maggie Mac Neil (CAN) | 54.05 | Melbourne, Australia | 18 December 2022 |
The following records were established during the competition:
| Date | Round | Name | Nationality | Time | Record |
| 13 December | Heat 5 | Gretchen Walsh | United States | 53.24 | WR |
| 13 December | Semifinal 2 | Gretchen Walsh | United States | 52.87 | WR |
| 14 December | Final | Gretchen Walsh | United States | 52.71 | WR |

## Results
### Heats

The heats were started on 13 December at 10:01.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | 4 | Gretchen Walsh | United States | 53.24 | Q, WR |
| 2 | 4 | 6 | Tessa Giele | Netherlands | 55.71 | Q, NR |
| 3 | 4 | 4 | Louise Hansson | Sweden | 55.86 | Q |
| 4 | 3 | 4 | Alexandria Perkins | Australia | 55.97 | Q |
| 5 | 5 | 2 | Ellen Walshe | Ireland | 56.17 | Q, NR |
| 6 | 4 | 5 | Laura Lahtinen | Finland | 56.20 | Q |
| 7 | 4 | 3 | Arina Surkova | Neutral Athletes B | 56.28 | Q |
| 8 | 5 | 3 | Mizuki Hirai | Japan | 56.30 | Q |
| 9 | 4 | 2 | Anastasiya Kuliashova | Neutral Athletes A | 56.42 | Q |
| 10 | 5 | 5 | Lily Price | Australia | 56.50 | Q |
| 11 | 5 | 6 | Chen Luying | China | 56.84 | Q |
| 12 | 3 | 3 | Daria Klepikova | Neutral Athletes B | 56.88 | Q |
| 13 | 3 | 7 | Vanessa Hazel Ouwehand | New Zealand | 56.97 | Q, NR |
| 14 | 3 | 1 | Georgia Damasioti | Greece | 57.14 | Q |
| 15 | 4 | 1 | Helena Bach | Denmark | 57.40 | Q |
| 16 | 5 | 8 | Iris Julia Berger | Austria | 57.44 | Q |
| 17 | 3 | 2 | Sara Junevik | Sweden | 57.49 | R |
| 18 | 3 | 6 | Elena Capretta | Italy | 57.56 | R |
| 19 | 4 | 7 | Panna Ugrai | Hungary | 57.95 | |
| 20 | 5 | 1 | Nicholle Toh | Singapore | 58.03 | |
| 21 | 5 | 7 | Gong Zhenqi | China | 58.29 | |
| 22 | 4 | 8 | Paulina Peda | Poland | 58.54 | |
| 23 | 3 | 8 | Yeung Hoi Ching | Hong Kong | 58.70 | |
| 24 | 3 | 0 | Kristen Elena Romano | Puerto Rico | 58.93 | NR |
| 25 | 4 | 0 | María José Mata Cocco | Neutral Athletes C | 58.96 | |
| 26 | 5 | 9 | Sofia Spodarenko | Kazakhstan | 59.22 | |
| 27 | 4 | 9 | Zora Ripkova | Slovakia | 59.23 | |
| 28 | 2 | 3 | Ana Nizharadze | Georgia | 1:00.31 | |
| 29 | 3 | 9 | Alexia Sotomayor | Peru | 1:00.46 | |
| 30 | 2 | 4 | Varsenik Manucharyan | Armenia | 1:00.52 | |
| 31 | 2 | 5 | Jessica Calderbank | Jamaica | 1:00.62 | |
| 32 | 2 | 7 | Karina Solera | Costa Rica | 1:00.66 | NR |
| 33 | 2 | 2 | Oumy Diop | Senegal | 1:00.77 | NR |
| 34 | 2 | 1 | M.V. Schutzmeier | Nicaragua | 1:01.15 | |
| 35 | 1 | 8 | Kim Sol Song | North Korea | 1:01.58 | |
| 36 | 2 | 8 | Paige Schendelaar-Kemp | Samoa | 1:01.84 | |
| 37 | 2 | 6 | I.B.P. Thorpe | Kenya | 1:01.99 | NR |
| 38 | 5 | 0 | Jaime Mote | South Africa | 1:02.27 | |
| 39 | 2 | 0 | Ashley Calderon | Honduras | 1:02.51 | |
| 40 | 1 | 4 | Anje Van As | Zimbabwe | 1:02.56 | |
| 41 | 2 | 9 | Cheang Weng Chi | Macau | 1:03.48 | |
| 42 | 1 | 5 | Davia Richardson | Belize | 1:03.72 | |
| 43 | 1 | 0 | Liana Planz | American Samoa | 1:05.68 | |
| 44 | 1 | 9 | Kaltra Meca | Albania | 1:06.10 | |
| 45 | 1 | 3 | Amaya Bollinger | Guam | 1:06.38 | |
| 46 | 1 | 6 | Amazya Eliya Ann Macrooy | Suriname | 1:11.77 | |
| 47 | 1 | 1 | Rana Saadeldin | Sudan | 1:12.54 | |
| 48 | 1 | 7 | Mayah Chouloute | Haiti | 1:16.31 | |
| | 3 | 5 | Regan Smith | United States | Did not start | Did not start |
| | 1 | 2 | Meral Ayn Latheef | Maldives | Disqualified | Disqualified |

### Semifinals

The semifinals were started on 13 December at 18:20.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Gretchen Walsh | United States | 52.87 | Q, WR |
| 2 | 2 | 5 | Louise Hansson | Sweden | 55.03 | Q |
| 3 | 2 | 3 | Ellen Walshe | Ireland | 55.50 | Q, NR |
| 4 | 1 | 5 | Alexandria Perkins | Australia | 55.57 | Q |
| 5 | 1 | 6 | Mizuki Hirai | Japan | 55.68 | Q |
| 6 | 1 | 2 | Lily Price | Australia | 55.74 | Q |
| 7 | 1 | 4 | Tessa Giele | Netherlands | 55.50 | Q, NR |
| 8 | 1 | 7 | Daria Klepikova | Neutral Athletes B | 56.12 | Q |
| 9 | 2 | 6 | Arina Surkova | Neutral Athletes B | 56.20 | R |
| 10 | 1 | 3 | Laura Lahtinen | Finland | 56.26 | R |
| 11 | 1 | 8 | Iris Julia Berger | Austria | 56.38 | NR |
| 12 | 2 | 7 | Chen Luying | China | 56.48 | |
| 13 | 2 | 2 | Anastasiya Kuliashova | Neutral Athletes A | 56.57 | |
| 14 | 2 | 1 | Vanessa Hazel Ouwehand | New Zealand | 56.60 | |
| 15 | 1 | 1 | Georgia Damasioti | Greece | 57.12 | |
| 16 | 2 | 8 | Helena Bach | Denmark | 57.27 | |

### Final

The final was held on 14 December at 17:32.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Gretchen Walsh | United States | 52.71 | WR |
| | 1 | Tessa Giele | Netherlands | 54.66 | NR |
| | 6 | Alexandria Perkins | Australia | 55.10 | OC |
| 4 | 5 | Louise Hansson | Sweden | 55.23 | |
| 5 | 2 | Mizuki Hirai | Japan | 55.61 | |
| 6 | 3 | Ellen Walshe | Ireland | 55.68 | |
| 7 | 7 | Lily Price | Australia | 55.82 | |
| 8 | 8 | Laura Lahtinen | Finland | 56.92 | |