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

The Men's 400 metre individual medley competition of the 2022 FINA World Swimming Championships (25 m) was held on 17 December 2022.

## Records

Prior to the competition, the existing world and championship records were as follows.

| World record | Daiya Seto (JPN) | 3:54.81 | Las Vegas, United States | 20 December 2019 |
| - | - | - | - | - |
| Competition record | Ryan Lochte (USA) | 3:55.50 | Dubai, United Arab Emirates | 16 December 2010 |

## Results

### Heats

The heats were started at 11:47.

| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| - | - | - | - | - | - | - |
| 1 | 3 | 4 | Daiya Seto | Japan | 4:00.35 | Q |
| 2 | 2 | 4 | Carson Foster | United States | 4:01.34 | Q |
| 3 | 3 | 6 | Matthew Sates | South Africa | 4:02.18 | Q |
| 4 | 1 | 4 | Jake Foster | United States | 4:02.64 | Q |
| 5 | 3 | 3 | David Schlicht | Australia | 4:02.85 | Q |
| 6 | 2 | 3 | So Ogata | Japan | 4:03.29 | Q |
| 7 | 2 | 5 | Alberto Razzetti | Italy | 4:04.32 | Q |
| 8 | 3 | 8 | Richard Nagy | Slovakia | 4:06.26 | Q |
| 9 | 3 | 7 | Finlay Knox | Canada | 4:07.12 | |
| 10 | 3 | 1 | Émilien Mattenet | France | 4:08.06 | |
| 11 | 2 | 7 | Thomas Jansen | Netherlands | 4:08.29 | |
| 12 | 1 | 2 | Wang Hsing-hao | Chinese Taipei | 4:09.74 | NR |
| 13 | 2 | 8 | Luan Grobbelaar | New Zealand | 4:09.98 | |
| 14 | 2 | 1 | Jakub Bursa | Czech Republic | 4:10.28 | |
| 15 | 1 | 5 | Erick Gordillo | Guatemala | 4:10.97 | NR |
| 16 | 2 | 6 | Andreas Vazaios | Greece | 4:11.39 | |
| 17 | 2 | 2 | Huang Zhiwei | China | 4:13.19 | |
| 18 | 1 | 7 | Matheo Mateos | Paraguay | 4:14.73 | NR |
| 19 | 1 | 6 | Tao Guannan | China | 4:14.85 | |
| 20 | 1 | 3 | Kristaps Miķelsons | Latvia | 4:19.33 | |
| 21 | 1 | 1 | Mubal Azzam Ibrahim | Maldives | 5:00.64 | |
| | 3 | 5 | Brendon Smith | Australia | Disqualified | Disqualified |
| | 3 | 2 | Leonardo Coelho Santos | Brazil | Did not start | Did not start |

### Final

The final was held at 20:50.

| Rank | Lane | Name | Nationality | Time | Notes |
| - | - | - | - | - | - |
| | 4 | Daiya Seto | Japan | 3:55.75 | |
| | 5 | Carson Foster | United States | 3:57.63 | |
| | 3 | Matthew Sates | South Africa | 3:59.21 | NR |
| 4 | 1 | Alberto Razzetti | Italy | 4:00.45 | |
| 5 | 7 | So Ogata | Japan | 4:02.21 | |
| 6 | 6 | Jake Foster | United States | 4:02.51 | |
| 7 | 2 | David Schlicht | Australia | 4:04.33 | |
| 8 | 8 | Richard Nagy | Slovakia | 4:05.57 | |
