# Swimming at the 2022 World Aquatics Championships – Women's 100 metre breaststroke

The Women's 100 metre breaststroke competition at the 2022 World Aquatics Championships was held on 19 and 20 June 2022.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Lilly King (USA) | 1:04.13 | Budapest, Hungary | 25 July 2017 |
| Competition record | Lilly King (USA) | 1:04.13 | Budapest, Hungary | 25 July 2017 |

## Results
### Heats

The heats were started on 19 June at 09:32.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 6 | 6 | Tang Qianting | China | 1:05.99 | Q |
| 2 | 6 | 2 | Jenna Strauch | Australia | 1:06.16 | Q |
| 3 | 4 | 4 | Annie Lazor | United States | 1:06.33 | Q |
| 4 | 5 | 3 | Arianna Castiglioni | Italy | 1:06.49 | Q |
| 5 | 6 | 5 | Anna Elendt | Germany | 1:06.54 | Q |
| 6 | 4 | 5 | Sophie Hansson | Sweden | 1:06.61 | Q |
| 7 | 6 | 4 | Lilly King | United States | 1:06.65 | Q |
| 8 | 4 | 3 | Benedetta Pilato | Italy | 1:06.68 | Q |
| 9 | 4 | 1 | Rūta Meilutytė | Lithuania | 1:06.71 | Q |
| 10 | 6 | 3 | Lara van Niekerk | South Africa | 1:06.75 | Q |
| 11 | 5 | 6 | Molly Renshaw | Great Britain | 1:06.83 | Q |
| 12 | 4 | 6 | Kotryna Teterevkova | Lithuania | 1:06.97 | Q |
| 13 | 5 | 2 | Eneli Jefimova | Estonia | 1:07.09 | Q |
| 14 | 6 | 1 | Tes Schouten | Netherlands | 1:07.18 | Q |
| 15 | 5 | 5 | Yu Jingyao | China | 1:07.19 | Q |
| 16 | 5 | 4 | Reona Aoki | Japan | 1:07.35 | Q |
| 17 | 6 | 8 | Jhennifer Conceição | Brazil | 1:07.40 | |
| 18 | 5 | 7 | Anastasia Gorbenko | Israel | 1:07.88 | |
| 19 | 4 | 7 | Abbey Harkin | Australia | 1:08.12 | |
| 20 | 5 | 1 | Jessica Vall | Spain | 1:08.38 | |
| 21 | 3 | 6 | Moon Su-a | South Korea | 1:08.50 | |
| 22 | 6 | 0 | Letitia Sim | Singapore | 1:08.59 | |
| 23 | 4 | 9 | Macarena Ceballos | Argentina | 1:08.63 | |
| 24 | 5 | 8 | Sophie Angus | Canada | 1:08.76 | |
| 25 | 4 | 0 | Melissa Rodríguez | Mexico | 1:08.95 | |
| 26 | 4 | 8 | Florine Gaspard | Belgium | 1:09.22 | |
| 27 | 3 | 4 | Veera Kivirinta | Finland | 1:09.26 | |
| 28 | 3 | 5 | Kristýna Horská | Czech Republic | 1:09.39 | |
| 29 | 3 | 8 | Kamila Isaieva | Ukraine | 1:09.66 | |
| 30 | 3 | 3 | Adèle Blanchetière | France | 1:09.68 | |
| 31 | 6 | 7 | Emelie Fast | Sweden | 1:09.81 | |
| 32 | 2 | 4 | Nicole Frank | Uruguay | 1:10.48 | |
| 33 | 3 | 0 | Karina Vivas | Colombia | 1:10.60 | |
| 34 | 6 | 9 | Diana Petkova | Bulgaria | 1:10.81 | |
| 35 | 3 | 1 | Maria Drasidou | Greece | 1:11.00 | |
| 36 | 5 | 0 | Petra Halmai | Hungary | 1:11.09 | |
| 37 | 3 | 2 | Lena Kreundl | Austria | 1:11.24 | |
| 38 | 2 | 3 | Emily Santos | Panama | 1:12.11 | |
| 39 | 2 | 6 | Adelaida Pchelintseva | Kazakhstan | 1:12.40 | |
| 40 | 3 | 7 | Lin Pei-wun | Chinese Taipei | 1:13.09 | |
| 41 | 3 | 9 | Lillian Hoggs | Bahamas | 1:13.13 | |
| 42 | 2 | 5 | Phiangkhwan Pawapotako | Thailand | 1:13.23 | |
| 43 | 2 | 1 | Tessa Ip Hen Cheung | Mauritius | 1:14.83 | |
| 44 | 2 | 2 | Kirsten Fisher-Marsters | Cook Islands | 1:15.57 | |
| 45 | 2 | 7 | Marina Abu Shamaleh | Palestine | 1:15.80 | |
| 46 | 2 | 0 | Polyxeni Toumazou | Cyprus | 1:16.14 | |
| 47 | 1 | 3 | Duana Lama | Nepal | 1:17.58 | NR |
| 48 | 2 | 8 | Jayla Pina | Cape Verde | 1:18.02 | |
| 49 | 2 | 9 | Maria Freitas | Angola | 1:18.55 | |
| 50 | 1 | 4 | Lara Dashti | Kuwait | 1:21.00 | |
| 51 | 1 | 6 | Makelyta Singsombath | Laos | 1:22.75 | |
| 52 | 1 | 5 | Maria Battalones | Northern Mariana Islands | 1:26.01 | |
| – | 4 | 2 | Lisa Mamié | Switzerland | Did not start | Did not start |
| – | 5 | 9 | Phee Jinq En | Malaysia | Did not start | Did not start |

### Semifinals

The semifinals were started on 18 June at 18:29.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 3 | Anna Elendt | Germany | 1:05.62 | Q |
| 2 | 1 | 6 | Benedetta Pilato | Italy | 1:05.88 | Q |
| 3 | 2 | 4 | Tang Qianting | China | 1:05.97 | Q |
| 4 | 2 | 2 | Rūta Meilutytė | Lithuania | 1:06.04 | Q |
| 5 | 1 | 8 | Reona Aoki | Japan | 1:06.07 | Q |
| 6 | 1 | 3 | Sophie Hansson | Sweden | 1:06.30 | Q |
| 7 | 2 | 7 | Molly Renshaw | Great Britain | 1:06.39 | Q |
| 8 | 2 | 6 | Lilly King | United States | 1:06.40 | Q |
| 9 | 2 | 1 | Eneli Jefimova | Estonia | 1:06.48 | |
| 10 | 1 | 4 | Jenna Strauch | Australia | 1:06.49 | |
| 11 | 1 | 5 | Arianna Castiglioni | Italy | 1:06.59 | |
| 12 | 1 | 7 | Kotryna Teterevkova | Lithuania | 1:06.74 | |
| 13 | 1 | 2 | Lara van Niekerk | South Africa | 1:06.75 | |
| 14 | 2 | 8 | Yu Jingyao | China | 1:06.78 | |
| 15 | 1 | 1 | Tes Schouten | Netherlands | 1:07.20 | |
| | 2 | 5 | Annie Lazor | United States | Disqualified | Disqualified |

### Final

The finals was started on 20 June at 19:48.
| Rank | Lane | Name | Nationality | Time |
| | 5 | Benedetta Pilato | Italy | 1:05.93 |
| | 4 | Anna Elendt | Germany | 1:05.98 |
| | 6 | Rūta Meilutytė | Lithuania | 1:06.02 |
| 4 | 8 | Lilly King | United States | 1:06.07 |
| 5 | 2 | Reona Aoki | Japan | 1:06.38 |
| 6 | 7 | Sophie Hansson | Sweden | 1:06.39 |
| 7 | 3 | Tang Qianting | China | 1:06.41 |
| 8 | 1 | Molly Renshaw | Great Britain | 1:06.60 |