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

The Men's 100 metre backstroke 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 | Ryan Murphy (USA) | 51.85 | Rio de Janeiro, Brazil | 13 August 2016 |
| Competition record | Xu Jiayu (CHN) | 52.17 | Gwangju, South Korea | 22 July 2019 |
The following new records were set during this competition.
| Date | Event | Name | Nationality | Time | Record |
| 19 June | Semifinal | Apostolos Christou | Greece | 52.09 | CR |
| 20 June | Final | Thomas Ceccon | Italy | 51.60 | WR |

## Results
### Heats

The heats were started on 19 June at 09:15.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | 4 | Hunter Armstrong | United States | 52.81 | Q |
| 2 | 5 | 6 | Ryosuke Irie | Japan | 53.16 | Q |
| 3 | 6 | 3 | Apostolos Christou | Greece | 53.21 | Q |
| 4 | 4 | 5 | Yohann Ndoye Brouard | France | 53.22 | Q |
| 5 | 6 | 2 | Ksawery Masiuk | Poland | 53.33 | Q, NR |
| 6 | 6 | 4 | Ryan Murphy | United States | 53.42 | Q |
| 7 | 6 | 5 | Xu Jiayu | China | 53.45 | Q |
| 8 | 4 | 3 | Mewen Tomac | France | 53.60 | Q |
| 9 | 4 | 4 | Thomas Ceccon | Italy | 53.70 | Q |
| 10 | 5 | 3 | Hugo González | Spain | 53.74 | Q |
| 11 | 5 | 5 | Mitch Larkin | Australia | 53.77 | Q |
| 12 | 4 | 2 | Lee Ju-ho | South Korea | 53.84 | Q |
| 13 | 6 | 6 | Robert Glință | Romania | 53.86 | Q |
| 14 | 5 | 2 | Isaac Cooper | Australia | 53.87 | Q |
| 15 | 4 | 6 | Luke Greenbank | Great Britain | 53.97 | Q |
| 16 | 5 | 7 | Ole Braunschweig | Germany | 54.22 | Q |
| 17 | 5 | 1 | Guilherme Basseto | Brazil | 54.26 | |
| 18 | 6 | 7 | Andrew Jeffcoat | New Zealand | 54.35 | |
| 19 | 5 | 0 | Benedek Kovács | Hungary | 54.47 | |
| 20 | 3 | 3 | Mohamed Samy | Egypt | 54.67 | NR |
| 21 | 4 | 8 | Oleksandr Zheltiakov | Ukraine | 54.86 | |
| 22 | 4 | 0 | Javier Acevedo | Canada | 54.97 | |
| 23 | 6 | 0 | Jan Čejka | Czech Republic | 55.22 | |
| 24 | 4 | 1 | Michael Laitarovsky | Israel | 55.25 | |
| 25 | 3 | 7 | Ģirts Feldbergs | Latvia | 55.43 | |
| 26 | 4 | 7 | Joe Litchfield | Great Britain | 55.52 | |
| 27 | 3 | 9 | Chuang Mu-lun | Chinese Taipei | 55.57 | |
| 28 | 3 | 5 | Ziyad Ahmed | Sudan | 55.75 | |
| 29 | 5 | 8 | Quah Zheng Wen | Singapore | 55.76 | |
| 30 | 4 | 9 | Armin Lelle | Estonia | 55.82 | |
| 31 | 6 | 9 | Omar Pinzón | Colombia | 55.95 | |
| 32 | 5 | 9 | Yeziel Morales | Puerto Rico | 56.52 | |
| 33 | 3 | 8 | Max Mannes | Luxembourg | 56.90 | |
| 34 | 3 | 4 | Charles Hockin | Paraguay | 57.01 | |
| 35 | 2 | 4 | Lau Shiu Yue | Hong Kong | 57.06 | |
| 36 | 3 | 0 | Farrel Tangkas | Indonesia | 57.17 | |
| 37 | 3 | 1 | Patrick Groters | Aruba | 57.37 | |
| 38 | 2 | 3 | Yazan Al-Bawwab | Palestine | 59.31 | |
| 39 | 2 | 5 | Bede Aitu | Cook Islands | 59.54 | NR |
| 40 | 1 | 5 | Omar Al-Rowaila | Brunei | 1:00.03 | |
| 41 | 2 | 1 | Juhn Tenorio | Northern Mariana Islands | 1:00.93 | |
| 42 | 1 | 3 | Mekhayl Engel | Curaçao | 1:01.46 | |
| 43 | 2 | 7 | Samiul Islam Rafi | Bangladesh | 1:02.31 | |
| 44 | 2 | 2 | Charles Bennici | Cambodia | 1:02.57 | |
| 45 | 1 | 4 | Benjamin Ko | Guam | 1:02.66 | |
| 46 | 2 | 6 | Dennis Mhini | Tanzania | 1:04.71 | |
| 47 | 2 | 0 | Mohamed Aan Hussain | Maldives | 1:05.77 | |
| 48 | 2 | 9 | Nasser Al-Kindi | Oman | 1:06.02 | |
| – | 2 | 8 | Faizan Akbar | Pakistan | Did not start | Did not start |
| – | 3 | 2 | Jack Kirby | Barbados | Did not start | Did not start |
| – | 6 | 8 | Roman Mityukov | Switzerland | Did not start | Did not start |
| – | 6 | 1 | Bernhard Reitshammer | Austria | Did not start | Did not start |
| – | 3 | 6 | Erikas Grigaitis | Lithuania | Disqualified | Disqualified |

### Semifinals

The semifinals were started on 19 June at 18:18.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 5 | Apostolos Christou | Greece | 52.09 | Q, CR, NR |
| 2 | 2 | 2 | Thomas Ceccon | Italy | 52.12 | Q, NR |
| 3 | 2 | 4 | Hunter Armstrong | United States | 52.37 | Q |
| 4 | 2 | 3 | Ksawery Masiuk | Poland | 52.58 | Q, NR |
| 5 | 1 | 5 | Yohann Ndoye Brouard | France | 52.72 | Q |
| 6 | 1 | 3 | Ryan Murphy | United States | 52.80 | Q |
| 7 | 1 | 4 | Ryosuke Irie | Japan | 52.85 | Q |
| 8 | 2 | 1 | Robert Glință | Romania | 53.00 | Q |
| 9 | 1 | 6 | Mewen Tomac | France | 53.41 | |
| 10 | 2 | 6 | Xu Jiayu | China | 53.49 | |
| 11 | 1 | 2 | Hugo González | Spain | 53.50 | |
| 12 | 1 | 1 | Isaac Cooper | Australia | 53.55 | |
| 13 | 2 | 7 | Mitch Larkin | Australia | 53.73 | |
| 14 | 2 | 8 | Luke Greenbank | Great Britain | 53.99 | |
| 15 | 1 | 7 | Lee Ju-ho | South Korea | 54.07 | |
| 16 | 1 | 8 | Ole Braunschweig | Germany | 54.18 | |

### Final

The final was held on 20 June at 19:00.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 5 | Thomas Ceccon | Italy | 51.60 | WR |
| | 7 | Ryan Murphy | United States | 51.97 | |
| | 3 | Hunter Armstrong | United States | 51.98 | |
| 4 | 2 | Yohann Ndoye Brouard | France | 52.50 | |
| 5 | 4 | Apostolos Christou | Greece | 52.57 | |
| 6 | 6 | Ksawery Masiuk | Poland | 52.75 | |
| 7 | 1 | Ryosuke Irie | Japan | 52.83 | |
| 8 | 8 | Robert Glință | Romania | 53.63 | |