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

The Men's 100 metre butterfly competition at the 2022 World Aquatics Championships was held on 23 and 24 June 2022.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Caeleb Dressel (USA) | 49.45 | Tokyo, Japan | 31 July 2021 |
| Competition record | Caeleb Dressel (USA) | 49.50 | Gwangju, South Korea | 26 July 2019 |

## Results
### Heats

The heats were started on 23 June at 09:00.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 6 | 4 | Kristóf Milák | Hungary | 50.68 | Q |
| 2 | 7 | 3 | Joshua Liendo | Canada | 50.97 | Q |
| 3 | 7 | 5 | Noè Ponti | Switzerland | 51.17 | Q |
| 4 | 6 | 1 | Simon Bucher | Austria | 51.18 | Q, NR |
| 5 | 5 | 5 | Naoki Mizunuma | Japan | 51.46 | Q |
| 6 | 6 | 3 | Jakub Majerski | Poland | 51.50 | Q |
| 7 | 6 | 5 | Michael Andrew | United States | 51.57 | Q |
| 8 | 5 | 3 | James Guy | Great Britain | 51.68 | Q |
| 9 | 6 | 7 | Piero Codia | Italy | 51.69 | Q |
| 10 | 5 | 2 | Jacob Peters | Great Britain | 51.75 | Q |
| 11 | 7 | 6 | Katsuhiro Matsumoto | Japan | 51.78 | Q |
| 12 | 5 | 4 | Matthew Temple | Australia | 51.86 | Q |
| 13 | 6 | 6 | Federico Burdisso | Italy | 51.92 | Q |
| 14 | 6 | 0 | Gal Cohen Groumi | Israel | 51.96 | Q |
| 15 | 7 | 2 | Nyls Korstanje | Netherlands | 51.97 | Q |
| 16 | 5 | 1 | Tomer Frankel | Israel | 52.12 | Q |
| 17 | 7 | 7 | Wang Changhao | China | 52.15 | |
| 18 | 6 | 2 | Matheus Gonche | Brazil | 52.27 | |
| 19 | 4 | 4 | Jan Eric Friese | Germany | 52.39 | |
| 20 | 7 | 1 | Youssef Ramadan | Egypt | 52.42 | |
| 21 | 3 | 4 | Rasmus Nickelsen | Denmark | 52.54 | |
| 22 | 5 | 7 | Kyle Chalmers | Australia | 52.70 | |
| 23 | 4 | 3 | Clément Secchi | France | 52.76 | |
| 24 | 3 | 6 | Konstantinos Stamou | Greece | 52.77 | |
| 25 | 4 | 0 | Jorge Eliezer Otaiza Hernandez | Venezuela | 52.78 | |
| 25 | 7 | 8 | Vinicius Lanza | Brazil | 52.78 | |
| 27 | 4 | 5 | Wang Kuan-hung | Chinese Taipei | 52.80 | |
| 28 | 4 | 1 | Alex Ahtiainen | Estonia | 52.86 | |
| 29 | 7 | 9 | Chen Juner | China | 52.91 | |
| 30 | 4 | 6 | Alberto Lozano | Spain | 52.98 | |
| 31 | 5 | 8 | Finlay Knox | Canada | 53.05 | |
| 32 | 4 | 2 | Adilbek Mussin | Kazakhstan | 53.09 | |
| 33 | 3 | 5 | Navaphat Wongcharoen | Thailand | 53.20 | |
| 34 | 4 | 7 | José Ángel Martínez | Mexico | 53.22 | |
| 35 | 5 | 0 | Antani Ivanov | Bulgaria | 53.36 | |
| 36 | 6 | 9 | Louis Croenen | Belgium | 53.38 | |
| 37 | 4 | 8 | Deividas Margevičius | Lithuania | 53.44 | |
| 38 | 3 | 8 | Oskar Hoff | Sweden | 53.58 | |
| 38 | 4 | 9 | Moon Seung-woo | South Korea | 53.58 | |
| 40 | 3 | 9 | Adam Halas | Slovakia | 54.02 | |
| 41 | 6 | 8 | Matthew Sates | South Africa | 54.17 | |
| 42 | 3 | 2 | Sajan Prakash | India | 54.39 | |
| 43 | 2 | 4 | Steven Aimable | Senegal | 54.65 | |
| 44 | 3 | 7 | Abeku Jackson | Ghana | 54.67 | |
| 45 | 3 | 1 | Nicholas Lim | Hong Kong | 54.77 | |
| 46 | 2 | 6 | Tomas Lomero Arenas | Andorra | 55.04 | NR |
| 47 | 3 | 0 | Mehrshad Afghari | Iran | 55.12 | |
| 48 | 2 | 3 | Felipe Baffico | Chile | 55.32 | |
| 49 | 2 | 7 | Yousuf Al-Matrooshi | United Arab Emirates | 55.37 | |
| 50 | 2 | 2 | Esteban Nuñez Del Prado | Bolivia | 55.61 | |
| 51 | 3 | 3 | Glenn Sutanto | Indonesia | 55.94 | |
| 52 | 1 | 1 | Mathieu Bachmann | Egypt | 56.85 | |
| 53 | 1 | 0 | Gerald Hernández | Nicaragua | 57.75 | |
| 54 | 2 | 1 | Collins Saliboko | Tanzania | 57.90 | |
| 55 | 1 | 3 | Mahmoud Abu Gharbieh | Palestine | 58.36 | |
| 56 | 2 | 0 | Raphael Emmanuel Grand'Pierre | Haiti | 59.08 | |
| 57 | 1 | 6 | Jenebi Benoit | Grenada | 59.63 | |
| 58 | 1 | 2 | Mohamad Masoud | FINA Refugee Team | 59.78 | |
| 59 | 2 | 8 | Finau Ohuafi | Tonga | 59.83 | |
| 60 | 1 | 9 | Abdulhai Abdulmenem Sh Ashour | Libya | 1:00.68 | |
| 61 | 2 | 9 | Isihaka Irankunda | Rwanda | 1:02.25 | |
| 62 | 1 | 8 | Israel Poppe | Guam | 1:02.72 | |
| 63 | 1 | 7 | Nasser Saif Al Kindi | Kuwait | 1:03.73 | |
| 64 | 1 | 5 | Kinley Lhendup | Bhutan | 1:04.07 | |
| 65 | 1 | 4 | Simanga Dlamini | Eswatini | 1:04.46 | |
| | 2 | 5 | Salvador Gordo | Angola | Did not start | Did not start |
| | 5 | 6 | Szebasztián Szabó | Hungary | Did not start | Did not start |
| | 7 | 0 | Chad Le Clos | South Africa | Did not start | Did not start |
| | 7 | 4 | Caeleb Dressel | United States | Did not start | Did not start |
| | 5 | 9 | Teong Tzen Wei | Singapore | Disqualified | Disqualified |

### Semifinals

The semifinals were started on 23 June at 18:10.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Kristóf Milák | Hungary | 50.14 | Q |
| 2 | 2 | 3 | Naoki Mizunuma | Japan | 50.81 | Q, NR |
| 3 | 1 | 4 | Joshua Liendo | Canada | 51.14 | Q |
| 4 | 2 | 5 | Noè Ponti | Switzerland | 51.18 | Q |
| 5 | 1 | 5 | Simon Bucher | Austria | 51.22 | Q |
| 6 | 1 | 3 | Jakub Majerski | Poland | 51.24 | Q |
| 6 | 1 | 7 | Matthew Temple | Australia | 51.24 | Q |
| 8 | 2 | 6 | Michael Andrew | United States | 51.28 | Q |
| 9 | 2 | 8 | Nyls Korstanje | Netherlands | 51.41 | NR |
| 10 | 2 | 1 | Federico Burdisso | Italy | 51.45 | |
| 11 | 1 | 2 | Jacob Peters | Great Britain | 51.50 | |
| 11 | 1 | 6 | James Guy | Great Britain | 51.50 | |
| 13 | 2 | 7 | Katsuhiro Matsumoto | Japan | 51.57 | |
| 14 | 2 | 2 | Piero Codia | Italy | 51.73 | |
| 15 | 1 | 1 | Gal Cohen Groumi | Israel | 51.79 | NR |
| 16 | 1 | 8 | Tomer Frankel | Israel | 51.83 | |

### Final

The Final was held on 24 June at 18:44.
| Rank | Lane | Name | Nationality | Time |
| | 4 | Kristóf Milák | Hungary | 50.14 |
| | 5 | Naoki Mizunuma | Japan | 50.94 |
| | 3 | Joshua Liendo | Canada | 50.97 |
| 4 | 8 | Michael Andrew | United States | 51.11 |
| 5 | 1 | Matthew Temple | Australia | 51.15 |
| 6 | 2 | Simon Bucher | Austria | 51.28 |
| 7 | 7 | Jakub Majerski | Poland | 51.35 |
| 8 | 6 | Noè Ponti | Switzerland | 51.51 |