# Swimming at the 2019 World Aquatics Championships – Men's 400 metre individual medley

The Men's 400 metre individual medley competition at the 2019 World Championships was held on 28 July 2019.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Michael Phelps (USA) | 4:03.84 | Beijing, China | 10 August 2008 |
| Competition record | Chase Kalisz (USA) | 4:05.90 | Budapest, Hungary | 30 July 2017 |

## Results
### Heats

The heats were held at 10:00.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | 4 | Daiya Seto | Japan | 4:12.27 | Q |
| 2 | 5 | 8 | Arjan Knipping | Netherlands | 4:13.46 | Q, NR |
| 3 | 5 | 5 | Jay Litherland | United States | 4:13.78 | Q |
| 4 | 5 | 3 | Max Litchfield | Great Britain | 4:14.35 | Q |
| 5 | 4 | 7 | Lewis Clareburt | New Zealand | 4:14.56 | Q |
| 6 | 5 | 6 | Maksym Shemberev | Azerbaijan | 4:14.62 | Q |
| 7 | 4 | 2 | Joan Lluís Pons | Spain | 4:15.14 | Q |
| 8 | 5 | 7 | Philip Heintz | Germany | 4:15.24 | Q, WD |
| 9 | 4 | 3 | Péter Bernek | Hungary | 4:15.49 | Q |
| 10 | 5 | 4 | Chase Kalisz | United States | 4:15.62 | |
| 11 | 4 | 6 | Brandonn Almeida | Brazil | 4:15.92 | |
| 12 | 5 | 1 | Thomas Fraser-Holmes | Australia | 4:16.93 | |
| 13 | 4 | 5 | Dávid Verrasztó | Hungary | 4:16.95 | |
| 14 | 5 | 0 | João Vital | Portugal | 4:17.18 | |
| 15 | 3 | 3 | Tristan Cote | Canada | 4:17.22 | |
| 16 | 5 | 9 | Dawid Szwedzki | Poland | 4:17.48 | |
| 17 | 3 | 4 | Tomas Peribonio | Ecuador | 4:17.83 | |
| 18 | 3 | 2 | Jarod Arroyo | Puerto Rico | 4:18.94 | NR |
| 19 | 3 | 5 | Ayrton Sweeney | South Africa | 4:20.32 | |
| 20 | 4 | 8 | Wang Hsing-hao | Chinese Taipei | 4:21.65 | |
| 21 | 3 | 6 | Kim Min-suk | South Korea | 4:22.06 | |
| 22 | 3 | 7 | Christoph Meier | Liechtenstein | 4:22.56 | |
| 23 | 5 | 2 | Wang Shun | China | 4:23.23 | |
| 24 | 2 | 5 | Denys Kesil | Ukraine | 4:24.99 | |
| 25 | 3 | 8 | Trần Hưng Nguyễn | Vietnam | 4:25.49 | |
| 26 | 2 | 4 | Aflah Prawira | Indonesia | 4:26.49 | |
| 27 | 3 | 0 | Svetlozar Nikolov | Bulgaria | 4:26.88 | |
| 28 | 3 | 1 | Raphaël Stacchiotti | Luxembourg | 4:27.80 | |
| 29 | 2 | 6 | Erick Gordillo | Guatemala | 4:28.57 | |
| 30 | 3 | 9 | Jaouad Syoud | Algeria | 4:28.65 | |
| 31 | 2 | 2 | Pang Sheng Jun | Singapore | 4:28.93 | |
| 32 | 2 | 7 | Brandon Schuster | Samoa | 4:29.84 | |
| 33 | 2 | 3 | Ahmed Hamdy | Egypt | 4:30.17 | |
| 34 | 4 | 9 | Wang Yizhe | China | 4:31.14 | |
| 35 | 2 | 8 | Alvi Hjelm | Faroe Islands | 4:33.28 | |
| 36 | 1 | 3 | Gustavo Gutiérrez | Peru | 4:33.87 | |
| 37 | 1 | 4 | Faang Der Tiaa | Malaysia | 4:33.88 | |
| 38 | 2 | 1 | Munzer Kabbara | Lebanon | 4:35.58 | |
| 39 | 1 | 5 | Simon Bachmann | Seychelles | 4:41.42 | |
| | 4 | 0 | Richard Nagy | Slovakia | DSQ | DSQ |
| | 4 | 1 | Patrick Stäber | Austria | DSQ | DSQ |

### Final

The final was held on 28 July at 21:01.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Daiya Seto | Japan | 4:08.95 | |
| | 3 | Jay Litherland | United States | 4:09.22 | |
| | 2 | Lewis Clareburt | New Zealand | 4:12.07 | NR |
| 4 | 1 | Joan Lluís Pons | Spain | 4:13.30 | NR |
| 5 | 8 | Péter Bernek | Hungary | 4:13.83 | |
| 6 | 7 | Maksym Shemberev | Azerbaijan | 4:14.10 | |
| 7 | 6 | Max Litchfield | Great Britain | 4:14.75 | |
| 8 | 5 | Arjan Knipping | Netherlands | 4:17.06 | |