# Swimming at the 2023 World Aquatics Championships – Women's 50 metre butterfly

The women's 50 metre butterfly competition at the 2023 World Aquatics Championships was held on 28 and 29 July 2023.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Sarah Sjöström (SWE) | 24.43 | Borås, Sweden | 5 July 2014 |
| Competition record | Sarah Sjöström (SWE) | 24.60 | Budapest, Hungary | 29 July 2017 |

## Results
### Heats

The heats were started on 28 July at 11:39.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 7 | 4 | Sarah Sjöström | Sweden | 25.04 | Q |
| 2 | 7 | 5 | Zhang Yufei | China | 25.33 | Q |
| 3 | 7 | 3 | Rikako Ikee | Japan | 25.50 | Q |
| 4 | 5 | 4 | Mélanie Henique | France | 25.75 | Q |
| 5 | 5 | 5 | Farida Osman | Egypt | 25.77 | Q |
| 6 | 6 | 4 | Gretchen Walsh | United States | 25.78 | Q |
| 7 | 5 | 8 | Neža Klančar | Slovenia | 25.81 | Q, NR |
| 8 | 7 | 6 | Ai Soma | Japan | 25.96 | Q |
| 9 | 6 | 5 | Torri Huske | United States | 25.98 | Q |
| 10 | 5 | 3 | Angelina Köhler | Germany | 26.02 | Q |
| 11 | 6 | 6 | Sara Junevik | Sweden | 26.04 | Q |
| 12 | 5 | 6 | Anna Ntountounaki | Greece | 26.14 | Q |
| 13 | 6 | 3 | Maaike de Waard | Netherlands | 26.17 | Q |
| 14 | 7 | 2 | Yu Yiting | China | 26.21 | Q |
| 15 | 5 | 1 | Kim Busch | Netherlands | 26.23 | Q |
| 15 | 7 | 1 | Katerine Savard | Canada | 26.23 | Q |
| 17 | 7 | 8 | Helena Gasson | New Zealand | 26.29 | |
| 18 | 6 | 7 | Brianna Throssell | Australia | 26.30 | |
| 19 | 6 | 2 | Margaret MacNeil | Canada | 26.33 | |
| 20 | 6 | 1 | Julie Kepp Jensen | Denmark | 26.36 | |
| 21 | 7 | 7 | Emilie Beckmann | Denmark | 26.43 | |
| 22 | 6 | 8 | Celine Souza Bispo | Brazil | 26.55 | |
| 22 | 7 | 0 | Tamara Potocká | Slovakia | 26.55 | |
| 24 | 5 | 7 | Vanessa Ouwehand | New Zealand | 26.57 | |
| 25 | 6 | 9 | Quah Ting Wen | Singapore | 26.67 | |
| 26 | 5 | 2 | Paulina Peda | Poland | 26.71 | |
| 27 | 4 | 6 | Huang Mei-chien | Chinese Taipei | 26.73 | |
| 28 | 5 | 0 | Jenjira Srisa-Ard | Thailand | 26.78 | |
| 29 | 5 | 9 | Tayde Sansores | Mexico | 26.82 | |
| 30 | 4 | 4 | Danielle Hill | Ireland | 26.90 | |
| 31 | 7 | 9 | Tam Hoi Lam | Hong Kong | 26.91 | |
| 32 | 6 | 0 | Barbora Seemanová | Czech Republic | 27.02 | |
| 33 | 4 | 5 | Sirena Rowe | Colombia | 27.19 | |
| 34 | 4 | 3 | Lismar Lyon | Venezuela | 27.53 | |
| 35 | 4 | 1 | Olivia Borg | Samoa | 27.77 | NR |
| 36 | 4 | 2 | Amel Melih | Algeria | 27.79 | |
| 37 | 4 | 8 | Oumy Diop | Senegal | 27.86 | |
| 38 | 4 | 7 | Luana Alonso | Paraguay | 28.13 | |
| 39 | 3 | 5 | Rhanishka Gibbs | Bahamas | 28.43 | |
| 40 | 4 | 0 | Emily Muteti | Suspended Member Federation | 28.46 | |
| 41 | 3 | 3 | María José Ribera | Bolivia | 28.58 | |
| 41 | 4 | 9 | Maria Schutzmeier | Nicaragua | 28.58 | |
| 43 | 3 | 7 | Cherelle Thompson | Trinidad and Tobago | 28.84 | |
| 44 | 3 | 6 | Tara Naluwoza | Uganda | 29.07 | |
| 45 | 1 | 7 | Adaku Nwandu | Nigeria | 29.38 | |
| 46 | 3 | 4 | Mikaili Charlemagne | Saint Lucia | 29.39 | |
| 47 | 3 | 2 | Chloe Farro | Aruba | 29.41 | |
| 48 | 3 | 1 | Nubia Adjei | Ghana | 29.54 | |
| 49 | 3 | 8 | Bisma Khan | Pakistan | 29.63 | |
| 50 | 3 | 0 | Kennice Greene | Saint Vincent and the Grenadines | 29.90 | |
| 51 | 3 | 9 | Bianca Mitchell | Antigua and Barbuda | 29.97 | |
| 52 | 2 | 4 | Hayley Hoy | Eswatini | 30.73 | |
| 53 | 2 | 5 | Ayah Binrajab | Bahrain | 30.86 | |
| 54 | 2 | 0 | Abigail Ai Tom | Papua New Guinea | 31.46 | |
| 55 | 2 | 3 | Sonia Khatun | Bangladesh | 31.51 | |
| 56 | 2 | 2 | Ekaterina Bordachyova | Tajikistan | 32.09 | |
| 57 | 1 | 4 | Taeyanna Adams | Micronesia | 32.53 | |
| 58 | 2 | 7 | Arleigha Hall | Turks and Caicos Islands | 32.55 | |
| 59 | 1 | 5 | Maria Batallones | Northern Mariana Islands | 33.49 | |
| 60 | 2 | 9 | Alyse Maniriho | Burundi | 36.57 | |
| 61 | 1 | 6 | Lina Selo | Ethiopia | 37.68 | |
| 62 | 2 | 1 | Galyah Mikel | Palau | 38.22 | |
| 63 | 2 | 8 | Marie Amenou | Togo | 39.50 | |
| 64 | 1 | 2 | Claudette Ishimwe | Rwanda | 41.44 | |
| | 1 | 3 | Ruth Turay | Sierra Leone | DNS | DNS |
| | 2 | 6 | Taffi Illis | Sint Maarten | DNS | DNS |

### Semifinals

The semifinals were held on 28 July at 21:08.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Sarah Sjöström | Sweden | 24.74 | Q |
| 2 | 1 | 4 | Zhang Yufei | China | 25.17 | Q, NR |
| 3 | 1 | 3 | Gretchen Walsh | United States | 25.48 | Q |
| 4 | 1 | 5 | Mélanie Henique | France | 25.70 | Q |
| 5 | 2 | 5 | Rikako Ikee | Japan | 25.72 | Q |
| 6 | 2 | 3 | Farida Osman | Egypt | 25.74 | Q |
| 7 | 2 | 2 | Torri Huske | United States | 25.75 | Q |
| 8 | 2 | 7 | Sara Junevik | Sweden | 25.77 | Q |
| 9 | 1 | 7 | Anna Ntountounaki | Greece | 25.82 | |
| 10 | 2 | 6 | Neža Klančar | Slovenia | 25.83 | |
| 11 | 1 | 2 | Angelina Köhler | Germany | 25.88 | |
| 12 | 1 | 8 | Katerine Savard | Canada | 25.98 | |
| 13 | 2 | 1 | Maaike de Waard | Netherlands | 26.02 | |
| 14 | 2 | 8 | Kim Busch | Netherlands | 26.14 | |
| 15 | 1 | 6 | Ai Soma | Japan | 26.18 | |
| 16 | 1 | 1 | Yu Yiting | China | 26.27 | |

### Final

The final was held on 29 July at 20:02.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Sarah Sjöström | Sweden | 24.77 | |
| | 5 | Zhang Yufei | China | 25.05 | AS |
| | 3 | Gretchen Walsh | United States | 25.46 | |
| 4 | 7 | Farida Osman | Egypt | 25.62 | |
| 5 | 1 | Torri Huske | United States | 25.64 | |
| 6 | 8 | Sara Junevik | Sweden | 25.74 | |
| 7 | 2 | Rikako Ikee | Japan | 25.78 | |
| 8 | 6 | Mélanie Henique | France | 25.80 | |