# 2022 FINA World Swimming Championships (25 m) – Men's 400 metre freestyle

The Men's 400 metre freestyle competition of the 2022 FINA World Swimming Championships (25 m) was held on 15 December 2022.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Yannick Agnel (FRA) | 3:32.25 | Angers, France | 15 November 2012 |
| Competition record | Danas Rapšys (LTU) | 3:34.01 | Hangzhou, China | 11 December 2018 |

## Results
### Heats

The heats were started at 12:25.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | 4 | Kieran Smith | United States | 3:36.91 | Q |
| 2 | 5 | 3 | Matteo Ciampi | Italy | 3:37.73 | Q |
| 3 | 4 | 2 | Katsuhiro Matsumoto | Japan | 3:37.96 | Q |
| 4 | 4 | 3 | Mack Horton | Australia | 3:38.09 | Q |
| 5 | 4 | 6 | Thomas Neill | Australia | 3:38.23 | Q |
| 6 | 4 | 5 | Antonio Djakovic | Switzerland | 3:38.57 | Q |
| 7 | 4 | 4 | Danas Rapšys | Lithuania | 3:38.71 | Q |
| 8 | 5 | 6 | Jake Magahey | United States | 3:38.74 | Q |
| 9 | 3 | 6 | Kim Woo-min | South Korea | 3:38.86 | |
| 10 | 5 | 1 | Tom Dean | Great Britain | 3:39.79 | |
| 11 | 5 | 7 | Logan Fontaine | France | 3:39.84 | |
| 12 | 5 | 5 | Matthew Sates | South Africa | 3:41.05 | |
| 13 | 3 | 4 | Breno Correia | Brazil | 3:41.89 | |
| 14 | 4 | 7 | Shogo Takeda | Japan | 3:42.16 | |
| 15 | 3 | 1 | Daniel Jervis | Great Britain | 3:42.85 | |
| 16 | 2 | 3 | Luis Domínguez | Spain | 3:43.18 | |
| 17 | 5 | 2 | Luc Kroon | Netherlands | 3:44.76 | |
| 18 | 3 | 3 | Joaquín Vargas | Peru | 3:45.66 | |
| 19 | 2 | 6 | Yordan Yanchev | Bulgaria | 3:45.70 | |
| 20 | 3 | 2 | Louis Clark | New Zealand | 3:46.19 | |
| 21 | 1 | 4 | Mert Kılavuz | Turkey | 3:46.32 | |
| 22 | 2 | 5 | Santiago Corredor | Colombia | 3:47.60 | |
| 23 | 3 | 8 | Lucas Alba | Argentina | 3:48.47 | |
| 24 | 2 | 2 | Jakub Poliačik | Slovakia | 3:49.93 | |
| 25 | 2 | 4 | Cheuk Ming Ho | Hong Kong | 3:49.94 | |
| 26 | 2 | 8 | Wesley Roberts | Cook Islands | 3:50.03 | |
| 27 | 1 | 7 | Max Mannes | Luxembourg | 3:50.63 | |
| 28 | 1 | 6 | Luke Thompson | Bahamas | 3:56.22 | NR |
| 29 | 1 | 3 | Mark Ducaj | Albania | 3:56.41 | |
| 30 | 2 | 1 | Pavel Alovatki | Moldova | 3:56.60 | |
| 31 | 3 | 7 | David Popovici | Romania | 3:58.48 | |
| 32 | 1 | 5 | Dylan Cachia | Malta | 4:05.61 | |
| 33 | 1 | 2 | Ivan Hart | Suspended Member Federation | 4:08.64 | |
| 34 | 1 | 1 | Israel Poppe | Guam | 4:17.65 | |
| | 2 | 7 | Victor Johansson | Sweden | Did not start | Did not start |
| | 3 | 5 | Jon Jøntvedt | Norway | Did not start | Did not start |
| | 4 | 1 | Roman Fuchs | France | Did not start | Did not start |
| | 4 | 8 | Fei Liwei | China | Did not start | Did not start |
| | 5 | 8 | Marwan Elkamash | Egypt | Did not start | Did not start |

### Final

The final was held at 21:31.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Kieran Smith | United States | 3:34.38 | AM |
| | 2 | Thomas Neill | Australia | 3:35.05 | |
| | 1 | Danas Rapšys | Lithuania | 3:36.26 | |
| 4 | 3 | Katsuhiro Matsumoto | Japan | 3:36.87 | NR |
| 5 | 7 | Antonio Djakovic | Switzerland | 3:37.86 | |
| 6 | 6 | Mack Horton | Australia | 3:37.94 | |
| 7 | 8 | Jake Magahey | United States | 3:38.12 | |
| 8 | 5 | Matteo Ciampi | Italy | 3:38.98 | |