# Swimming at the 2022 World Aquatics Championships – Men's 400 metre freestyle

The Men's 400 metre freestyle competition at the 2022 World Aquatics Championships was held on 18 June 2022.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Paul Biedermann (GER) | 3:40.07 | Rome, Italy | 26 July 2009 |
| Competition record | Paul Biedermann (GER) | 3:40.07 | Rome, Italy | 26 July 2009 |

## Results
### Heats

The heats were started at 09:16.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | 5 | Felix Auböck | Austria | 3:43.83 | Q, NR |
| 2 | 4 | 4 | Elijah Winnington | Australia | 3:44.42 | Q |
| 3 | 4 | 2 | Guilherme Costa | Brazil | 3:44.52 | Q, SA |
| 4 | 5 | 4 | Lukas Märtens | Germany | 3:45.04 | Q |
| 5 | 4 | 3 | Kieran Smith | United States | 3:45.70 | Q |
| 6 | 3 | 4 | Kim Woo-min | South Korea | 3:45.87 | Q |
| 7 | 4 | 1 | Trey Freeman | United States | 3:46.12 | Q |
| 8 | 5 | 6 | Marco De Tullio | Italy | 3:46.47 | Q |
| 9 | 5 | 3 | Mack Horton | Australia | 3:46.57 | |
| 10 | 5 | 2 | Antonio Djakovic | Switzerland | 3:46.90 | |
| 11 | 5 | 5 | Henning Mühlleitner | Germany | 3:47.17 | |
| 12 | 5 | 7 | Lorenzo Galossi | Italy | 3:47.19 | |
| 13 | 5 | 8 | Marwan Elkamash | Egypt | 3:47.21 | |
| 14 | 4 | 7 | Daniel Jervis | Great Britain | 3:48.66 | |
| 15 | 3 | 2 | Khiew Hoe Yean | Malaysia | 3:48.72 | NR |
| 16 | 3 | 9 | Bar Soloveychik | Israel | 3:49.87 | |
| 17 | 3 | 5 | Dimitrios Markos | Greece | 3:49.93 | |
| 18 | 4 | 6 | Danas Rapšys | Lithuania | 3:50.03 | |
| 19 | 5 | 1 | Henrik Christiansen | Norway | 3:50.18 | |
| 20 | 5 | 0 | Kregor Zirk | Estonia | 3:50.62 | |
| 21 | 3 | 6 | Jeremy Bagshaw | Canada | 3:50.77 | |
| 22 | 3 | 8 | Juan Morales | Colombia | 3:51.50 | |
| 23 | 4 | 8 | Ji Xinjie | China | 3:51.84 | |
| 24 | 4 | 9 | Mykhailo Romanchuk | Ukraine | 3:52.92 | |
| 25 | 5 | 9 | Zhang Ziyang | China | 3:53.55 | |
| 26 | 4 | 0 | Nguyễn Huy Hoàng | Vietnam | 3:54.05 | |
| 27 | 2 | 5 | Glen Lim Jun Wei | Singapore | 3:54.63 | |
| 28 | 2 | 1 | Pavel Alovatki | Moldova | 3:55.64 | |
| 29 | 3 | 0 | Yordan Yanchev | Bulgaria | 3:56.52 | |
| 30 | 3 | 1 | José Paulo Lopes | Portugal | 3:56.59 | |
| 31 | 2 | 2 | Tonnam Kanteemool | Thailand | 3:56.96 | |
| 32 | 3 | 7 | Cheuk Ming Ho | Hong Kong | 3:58.38 | |
| 33 | 2 | 3 | Kushagra Rawat | India | 3:59.69 | |
| 34 | 2 | 4 | Wesley Roberts | Cook Islands | 4:00.67 | |
| 35 | 2 | 6 | Irakli Revishvili | Georgia | 4:02.01 | |
| 36 | 2 | 7 | Adib Khalil | Lebanon | 4:02.64 | |
| 37 | 2 | 8 | Noah Mascoll-Gomes | Antigua and Barbuda | 4:02.93 | |
| 38 | 2 | 0 | Loris Bianchi | San Marino | 4:04.57 | |
| 39 | 2 | 9 | Ramazan Omarov | Kyrgyzstan | 4:16.22 | |
| 40 | 1 | 3 | Muhammad Siddiqui | Pakistan | 4:18.03 | |
| 41 | 1 | 4 | Haziq Samil | Brunei | 4:23.59 | |
| 42 | 1 | 5 | Charles Bennici | Cambodia | 4:26.82 | |
| — | 3 | 3 | Matthew Sates | South Africa | DNS | DNS |

### Final

The final was held at 18:02.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 5 | Elijah Winnington | Australia | 3:41.22 | |
| | 6 | Lukas Märtens | Germany | 3:42.85 | |
| | 3 | Guilherme Costa | Brazil | 3:43.31 | SA |
| 4 | 4 | Felix Auböck | Austria | 3:43.58 | NR |
| 5 | 8 | Marco De Tullio | Italy | 3:44.14 | |
| 6 | 7 | Kim Woo-min | South Korea | 3:45.64 | |
| 7 | 2 | Kieran Smith | United States | 3:46.43 | |
| 8 | 1 | Trey Freeman | United States | 3:46.53 | |