# 2022 FINA World Swimming Championships (25 m) – Women's 100 metre butterfly

The Women's 100 metre butterfly competition of the 2022 FINA World Swimming Championships (25 m) was held on 17 and 18 December 2022.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Kelsi Dahlia (USA) | 54.59 | Eindhoven, Netherlands | 3 December 2021 |
| Competition record | Sarah Sjöström (SWE) | 54.61 | Doha, Qatar | 7 December 2014 |
The following records was established during the competition:
| Date | Event | Name | Nationality | Time | Record |
| 18 December | Final | Maggie Mac Neil | Canada | 54.05 | WR |

## Results
### Heats

The heats were started on 17 December at 12:05.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 3 | 4 | Louise Hansson | Sweden | 55.74 | Q |
| 2 | 3 | 5 | Torri Huske | United States | 56.01 | Q |
| 3 | 3 | 6 | Alexandria Perkins | Australia | 56.46 | Q |
| 4 | 4 | 4 | Maggie Mac Neil | Canada | 56.53 | Q |
| 5 | 2 | 7 | Angelina Köhler | Germany | 56.56 | Q |
| 6 | 2 | 6 | Maaike de Waard | Netherlands | 56.67 | Q |
| 7 | 3 | 3 | Ai Soma | Japan | 56.72 | Q |
| 8 | 4 | 7 | Katerine Savard | Canada | 56.86 | Q |
| 9 | 2 | 5 | Lana Pudar | Bosnia and Herzegovina | 56.89 | Q |
| 10 | 2 | 4 | Claire Curzan | United States | 56.90 | Q |
| 11 | 3 | 7 | Helena Rosendahl Bach | Denmark | 57.15 | Q |
| 12 | 2 | 3 | Moe Tsuda | Japan | 57.22 | Q |
| 13 | 2 | 1 | Kim Seo-yeong | South Korea | 57.26 | Q, NR |
| 14 | 4 | 6 | Giovanna Diamante | Brazil | 57.50 | Q |
| 15 | 4 | 2 | Helena Gasson | New Zealand | 57.51 | Q |
| 16 | 2 | 2 | Brittany Castelluzzo | Australia | 57.85 | QSO |
| 16 | 3 | 2 | Laura Lahtinen | Finland | 57.85 | QSO |
| 18 | 3 | 1 | Amina Kajtaz | Croatia | 57.88 | NR |
| 19 | 4 | 1 | Rebecca Meder | South Africa | 58.04 | |
| 20 | 3 | 8 | Sze Hang-yu | Hong Kong | 58.06 | |
| 21 | 2 | 8 | Barbora Janíčková | Czech Republic | 58.65 | |
| 22 | 4 | 8 | Luana Alonso | Paraguay | 58.93 | |
| 23 | 1 | 6 | Zora Ripková | Slovakia | 59.39 | |
| 24 | 1 | 4 | Krystal Lara | Dominican Republic | 59.78 | NR |
| 25 | 1 | 5 | Olivia Borg | Samoa | 1:00.13 | NR |
| 26 | 1 | 7 | Julimar Ávila | Honduras | 1:01.43 | NR |
| 27 | 1 | 3 | Oumy Diop | Senegal | 1:01.54 | NR |
| 28 | 1 | 2 | Imara-Bella Thorpe | Suspended Member Federation | 1:01.84 | |
| 29 | 1 | 1 | Tara Naluwoza | Uganda | 1:05.28 | |
| | 4 | 3 | Wang Yichun | China | Did not start | Did not start |
| | 4 | 5 | Zhang Yufei | China | Did not start | Did not start |

#### Swim-off

The swim-off was held on 17 December at 13:33.
| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | Laura Lahtinen | Finland | 56.88 | Q, NR |
| 2 | 4 | Brittany Castelluzzo | Australia | 57.76 | |

### Semifinals

The semifinals were started on 17 December at 21:07.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 4 | Torri Huske | United States | 55.23 | Q |
| 2 | 2 | 4 | Louise Hansson | Sweden | 55.78 | Q |
| 3 | 1 | 5 | Maggie Mac Neil | Canada | 55.83 | Q |
| 4 | 2 | 3 | Angelina Köhler | Germany | 56.23 | Q, NR |
| 5 | 1 | 2 | Claire Curzan | United States | 56.37 | Q, WD |
| 6 | 2 | 5 | Alexandria Perkins | Australia | 56.39 | Q |
| 7 | 1 | 3 | Maaike de Waard | Netherlands | 56.40 | Q |
| 8 | 1 | 6 | Katerine Savard | Canada | 56.44 | Q |
| 9 | 2 | 6 | Ai Soma | Japan | 56.51 | Q |
| 10 | 2 | 2 | Lana Pudar | Bosnia and Herzegovina | 56.71 | |
| 11 | 2 | 1 | Kim Seo-yeong | South Korea | 57.07 | NR |
| 12 | 1 | 2 | Giovanna Diamante | Brazil | 57.13 | |
| 13 | 2 | 7 | Helena Rosendahl Bach | Denmark | 57.21 | |
| 14 | 2 | 8 | Helena Gasson | New Zealand | 57.23 | |
| 15 | 1 | 7 | Moe Tsuda | Japan | 57.25 | |
| 16 | 1 | 8 | Laura Lahtinen | Finland | 58.09 | |

### Final

The final was held on 18 December at 19:35.
| Rank | Lane | Nation | Swimmers | Time | Notes |
| | 3 | Maggie Mac Neil | Canada | 54.05 | WR |
| | 4 | Torri Huske | United States | 54.75 | |
| | 5 | Louise Hansson | Sweden | 54.87 | |
| 4 | 6 | Angelina Köhler | Germany | 56.20 | NR |
| 5 | 8 | Ai Soma | Japan | 56.27 | |
| 6 | 2 | Alexandria Perkins | Australia | 56.34 | |
| 7 | 7 | Maaike de Waard | Netherlands | 56.52 | |
| 8 | 1 | Katerine Savard | Canada | 56.87 | |