# Swimming at the 2024 World Aquatics Championships – Men's 50 metre backstroke

The Men's 50 metre backstroke competition at the 2024 World Aquatics Championships was held on 17 and 18 February 2024.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Kliment Kolesnikov (RUS) | 23.55 | Kazan, Russia | 27 July 2023 |
| Competition record | Liam Tancock (GBR) | 24.04 | Rome, Italy | 2 August 2009 |

## Results
### Heats

The heats were held on 17 February at 09:57.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | 5 | Ksawery Masiuk | Poland | 24.58 | Q |
| 1 | 5 | 4 | Hunter Armstrong | United States | 24.66 | Q |
| 3 | 3 | 7 | Hugo González | Spain | 24.72 | Q |
| 4 | 3 | 4 | Isaac Cooper | Australia | 24.75 | Q |
| 4 | 4 | 4 | Pieter Coetze | South Africa | 24.75 | Q |
| 6 | 4 | 5 | Michael Andrew | United States | 24.82 | Q |
| 7 | 5 | 6 | Michele Lamberti | Italy | 24.88 | Q |
| 8 | 5 | 3 | Ole Braunschweig | Germany | 24.94 | Q |
| 9 | 5 | 7 | Yoon Ji-hwan | South Korea | 25.01 | Q |
| 10 | 3 | 2 | Ulises Saravia | Argentina | 25.02 | Q |
| 11 | 3 | 5 | Apostolos Christou | Greece | 25.03 | Q |
| 12 | 4 | 7 | Björn Seeliger | Sweden | 25.10 | Q |
| 13 | 4 | 3 | Miroslav Knedla | Czech Republic | 25.14 | Q |
| 14 | 5 | 8 | Adrian Santos | Spain | 25.15 | Q |
| 15 | 3 | 3 | Andrew Jeffcoat | New Zealand | 25.16 | Q |
| 16 | 3 | 1 | Evangelos Makrygiannis | Greece | 25.18 | Q |
| 17 | 3 | 6 | Javier Acevedo | Canada | 25.28 | |
| 18 | 4 | 1 | Bradley Woodward | Australia | 25.41 | |
| 19 | 2 | 4 | Ádám Jászó | Hungary | 25.43 | |
| 20 | 5 | 2 | Oleksandr Zheltiakov | Ukraine | 25.60 | |
| 21 | 5 | 1 | Lamar Taylor | Bahamas | 25.80 | |
| 22 | 2 | 7 | Dimuth Peiris | Sri Lanka | 25.86 | |
| 23 | 5 | 0 | Jerard Jacinto | Philippines | 25.92 | |
| 24 | 5 | 9 | Diego Camacho | Mexico | 25.97 | |
| 25 | 3 | 9 | Dino Hasibović | Bosnia and Herzegovina | 26.06 | |
| 25 | 4 | 8 | I Gede Siman Sudartawa | Indonesia | 26.06 | |
| 27 | 2 | 6 | Ģirts Feldbergs | Latvia | 26.08 | |
| 28 | 3 | 8 | Yeziel Morales | Puerto Rico | 26.17 | |
| 29 | 2 | 3 | Kaloyan Levterov | Bulgaria | 26.25 | |
| 29 | 2 | 8 | Merdan Ataýew | Turkmenistan | 26.25 | |
| 31 | 4 | 9 | Bernhard Reitshammer | Austria | 26.33 | |
| 32 | 4 | 6 | Andrei-Mircea Anghel | Romania | 26.36 | |
| 33 | 2 | 2 | Xu Yifan | China | 26.37 | |
| 34 | 2 | 5 | Filippos Iakovidis | Cyprus | 26.43 | |
| 35 | 4 | 0 | Charles Hockin | Paraguay | 26.45 | |
| 36 | 2 | 9 | Erkhes Enkhtur | Mongolia | 26.72 | |
| 37 | 2 | 1 | Lau Shiu Yue | Hong Kong | 26.74 | |
| 38 | 1 | 4 | Guido Montero | Costa Rica | 27.71 | |
| 39 | 1 | 5 | Oscar Peyre | Rwanda | 27.79 | |
| 40 | 2 | 0 | Antoine De Lapparent | Cambodia | 27.93 | |
| 41 | 1 | 6 | Tajhari Williams | Turks and Caicos Islands | 28.78 | |
| 42 | 1 | 3 | Hasan Al-Zinkee | Iraq | 28.97 | |
| 43 | 1 | 1 | Brandon George | Saint Vincent and the Grenadines | 29.16 | |
| 44 | 1 | 2 | Giorgio Nguichie | Cameroon | 33.95 | |
| | 1 | 7 | Ibrahim Kamara | Sierra Leone | Did not start | Did not start |
| | 1 | 8 | Yousef Al-Khulaifi | Qatar | Did not start | Did not start |
| | 4 | 2 | Conor Ferguson | Ireland | Did not start | Did not start |
| | 3 | 0 | Mantas Kauspedas | Lithuania | Disqualified | Disqualified |

### Semifinals

The semifinals were held on 17 February at 20:06.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 5 | Isaac Cooper | Australia | 24.12 | Q, OC |
| 2 | 1 | 4 | Hunter Armstrong | United States | 24.43 | Q |
| 3 | 2 | 3 | Pieter Coetze | South Africa | 24.46 | Q |
| 3 | 2 | 4 | Ksawery Masiuk | Poland | 24.46 | Q |
| 5 | 2 | 5 | Hugo González | Spain | 24.60 | Q |
| 6 | 2 | 6 | Michele Lamberti | Italy | 24.68 | Q |
| 7 | 1 | 3 | Michael Andrew | United States | 24.70 | Q |
| 8 | 1 | 6 | Ole Braunschweig | Germany | 24.74 | Q |
| 9 | 1 | 8 | Evangelos Makrygiannis | Greece | 24.84 | |
| 10 | 2 | 8 | Andrew Jeffcoat | New Zealand | 24.88 | |
| 11 | 2 | 7 | Apostolos Christou | Greece | 25.01 | |
| 12 | 2 | 1 | Miroslav Knedla | Czech Republic | 25.06 | |
| 13 | 1 | 1 | Adrian Santos | Spain | 25.09 | |
| 14 | 1 | 7 | Björn Seeliger | Sweden | 25.10 | |
| 15 | 1 | 2 | Ulises Saravia | Argentina | 25.13 | |
| 16 | 2 | 2 | Yoon Ji-hwan | South Korea | 25.14 | |

### Final

The final was held on 18 February at 19:02.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Isaac Cooper | Australia | 24.13 | |
| | 5 | Hunter Armstrong | United States | 24.33 | |
| | 6 | Ksawery Masiuk | Poland | 24.44 | =NR |
| 4 | 3 | Pieter Coetze | South Africa | 24.59 | |
| 5 | 8 | Ole Braunschweig | Germany | 24.74 | |
| 6 | 2 | Hugo González | Spain | 24.77 | |
| 7 | 7 | Michele Lamberti | Italy | 24.82 | |
| 8 | 1 | Michael Andrew | United States | 24.86 | |