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

The Men's 100 metre breaststroke competition at the 2022 World Aquatics Championships was held on 18 and 19 June 2022.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Adam Peaty (GBR) | 56.88 | Gwangju, South Korea | 21 July 2019 |
| Competition record | Adam Peaty (GBR) | 56.88 | Gwangju, South Korea | 21 July 2019 |

## Results
### Heats

The heats were started on 18 June at 10:36.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 7 | 4 | Arno Kamminga | Netherlands | 58.69 | Q |
| 2 | 7 | 5 | Nic Fink | United States | 58.81 | Q |
| 3 | 6 | 4 | Michael Andrew | United States | 58.96 | Q |
| 4 | 5 | 4 | Nicolò Martinenghi | Italy | 59.06 | Q |
| 5 | 5 | 5 | Yan Zibei | China | 59.83 | Q |
| 6 | 6 | 6 | Caspar Corbeau | Netherlands | 59.89 | Q |
| 7 | 5 | 3 | Ryuya Mura | Japan | 59.90 | Q |
| 7 | 6 | 3 | Andrius Šidlauskas | Lithuania | 59.90 | Q |
| 9 | 7 | 6 | Lucas Matzerath | Germany | 59.94 | Q |
| 10 | 5 | 6 | Zac Stubblety-Cook | Australia | 1:00.12 | Q |
| 11 | 6 | 5 | James Wilby | Great Britain | 1:00.14 | Q |
| 12 | 7 | 1 | Erik Persson | Sweden | 1:00.34 | Q |
| 13 | 6 | 7 | Matti Mattsson | Finland | 1:00.37 | Q |
| 13 | 7 | 2 | Cho Sung-jae | South Korea | 1:00.37 | Q |
| 15 | 7 | 7 | Bernhard Reitshammer | Austria | 1:00.66 | Q |
| 16 | 6 | 8 | Kristian Pitshugin | Israel | 1:00.70 | Q |
| 17 | 4 | 3 | Dawid Wiekiera | Poland | 1:00.80 | |
| 17 | 7 | 0 | Anton McKee | Iceland | 1:00.80 | |
| 19 | 7 | 3 | Berkay Ömer Öğretir | Turkey | 1:00.82 | |
| 20 | 6 | 2 | Denis Petrashov | Kyrgyzstan | 1:00.86 | |
| 21 | 7 | 8 | Lyubomir Epitropov | Bulgaria | 1:01.06 | |
| 22 | 5 | 1 | Jérémy Desplanches | Switzerland | 1:01.24 | |
| 23 | 6 | 9 | Brenden Crawford | South Africa | 1:01.25 | |
| 24 | 5 | 2 | Felipe França Silva | Brazil | 1:01.41 | |
| 25 | 6 | 0 | Konstantinos Meretsolias | Greece | 1:01.46 | |
| 26 | 5 | 8 | Carl Aitkaci | France | 1:01.51 | |
| 27 | 4 | 6 | Maximillian Wei Ang | Singapore | 1:01.76 | |
| 28 | 5 | 9 | Tamás Takács | Hungary | 1:01.86 | |
| 29 | 4 | 9 | Amro Al-Wir | Jordan | 1:01.87 | NR |
| 30 | 5 | 7 | André Klippenberg Grindheim | Norway | 1:01.99 | |
| 31 | 4 | 7 | Youssef El-Kamash | Egypt | 1:02.04 | |
| 32 | 4 | 5 | Julio Horrego | Honduras | 1:02.07 | |
| 33 | 6 | 1 | Volodymyr Lisovets | Ukraine | 1:02.33 | |
| 34 | 4 | 2 | Carles Coll | Spain | 1:02.52 | |
| 35 | 3 | 4 | Cai Bing-rong | Chinese Taipei | 1:02.75 | |
| 36 | 3 | 6 | Daniils Bobrovs | Latvia | 1:02.85 | |
| 37 | 4 | 1 | Taichi Vakasama | Fiji | 1:02.86 | |
| 38 | 4 | 0 | Adam Chillingworth | Hong Kong | 1:02.91 | |
| 39 | 4 | 4 | Phạm Thanh Bảo | Vietnam | 1:03.19 | |
| 40 | 3 | 9 | Adrian Robinson | Botswana | 1:03.43 | |
| 41 | 3 | 3 | Aibek Kamzenov | Kazakhstan | 1:03.46 | |
| 42 | 5 | 0 | Izaak Bastian | Bahamas | 1:03.79 | |
| 43 | 3 | 7 | Jonathan Cook | Philippines | 1:03.95 | |
| 44 | 2 | 6 | Julio Calero | Cuba | 1:04.12 | |
| 45 | 2 | 4 | Abobakr Abass | Sudan | 1:04.13 | |
| 46 | 3 | 8 | Rashed Al-Tarmoom | Kuwait | 1:04.19 | |
| 47 | 3 | 1 | Andres Martijena | Dominican Republic | 1:04.24 | |
| 48 | 2 | 5 | Tasi Limtiaco | Micronesia | 1:04.63 | |
| 49 | 4 | 8 | Édgar Crespo | Panama | 1:05.09 | |
| 50 | 2 | 8 | Jonathan Raharvel | Madagascar | 1:05.13 | |
| 51 | 3 | 0 | Giacomo Casadei | San Marino | 1:05.17 | |
| 52 | 2 | 3 | Kito Campbell | Jamaica | 1:05.27 | |
| 53 | 2 | 2 | Abdulaziz Al-Obaidly | Qatar | 1:05.37 | |
| 54 | 2 | 1 | Jonathan Chung Yee | Mauritius | 1:06.04 | |
| 55 | 1 | 6 | Saud Ghali | Bahrain | 1:06.46 | |
| 56 | 2 | 7 | Filipe Gomes | Malawi | 1:06.57 | |
| 57 | 3 | 2 | Sébastien Kouma | Mali | 1:07.43 | |
| 58 | 1 | 3 | Zandanbal Gunsennorov | Mongolia | 1:07.79 | |
| 59 | 2 | 0 | Kumaren Naidu | Zambia | 1:11.40 | |
| 60 | 1 | 5 | Jion Hosei | Palau | 1:18.51 | |
| | 2 | 9 | Ahmed Al-Hasani | Iraq | Did not start | Did not start |
| | 3 | 5 | Adriel Sanes | U.S. Virgin Islands | Disqualified | Disqualified |
| | 7 | 9 | James Dergousoff | Canada | Disqualified | Disqualified |
| | 1 | 4 | Daoud Ali | Djibouti | Disqualified | Disqualified |

### Semifinals

The semifinals were started on 18 June at 18:53.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 5 | Nicolò Martinenghi | Italy | 58.46 | Q |
| 2 | 1 | 4 | Nic Fink | United States | 58.55 | Q |
| 3 | 2 | 4 | Arno Kamminga | Netherlands | 58.89 | Q |
| 4 | 2 | 7 | James Wilby | Great Britain | 59.23 | Q |
| 5 | 2 | 3 | Yan Zibei | China | 59.34 | Q |
| 6 | 2 | 2 | Lucas Matzerath | Germany | 59.35 | Q |
| 7 | 1 | 2 | Zac Stubblety-Cook | Australia | 59.51 | Q |
| 8 | 1 | 6 | Andrius Šidlauskas | Lithuania | 59.52 | Q |
| 9 | 2 | 5 | Michael Andrew | United States | 59.63 | |
| 10 | 2 | 6 | Ryuya Mura | Japan | 59.64 | |
| 11 | 1 | 1 | Cho Sung-jae | South Korea | 59.75 | |
| 12 | 2 | 8 | Bernhard Reitshammer | Austria | 1:00.03 | |
| 13 | 1 | 3 | Caspar Corbeau | Netherlands | 1:00.24 | |
| 14 | 1 | 8 | Kristian Pitshugin | Israel | 1:00.33 | NR |
| 15 | 1 | 7 | Erik Persson | Sweden | 1:00.38 | |
| 16 | 2 | 1 | Matti Mattsson | Finland | 1:00.66 | |

### Final

The final was held on 19 June at 18:02.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Nicolò Martinenghi | Italy | 58.26 | NR |
| | 3 | Arno Kamminga | Netherlands | 58.62 | |
| | 5 | Nic Fink | United States | 58.65 | |
| 4 | 6 | James Wilby | Great Britain | 58.93 | |
| 5 | 2 | Yan Zibei | China | 59.22 | |
| 6 | 7 | Lucas Matzerath | Germany | 59.50 | |
| 7 | 1 | Zac Stubblety-Cook | Australia | 59.65 | |
| 8 | 8 | Andrius Šidlauskas | Lithuania | 59.80 | |