# 2012 FINA World Swimming Championships (25 m) – Men's 400 metre individual medley

The men's 400 metre individual medley event at the 11th FINA World Swimming Championships (25m) took place 13 December 2012 at the Sinan Erdem Dome.

## Records

Prior to this competition, the existing world and championship records were as follows.
| | Name | Nation | Time | Location | Date |
| World record Championship record | Ryan Lochte | United States | 3:55.50 | Dubai | 16 December 2010 |
No new records were set during this competition.

## Results
### Heats

43 swimmers participated in 5 heats.
| Rank | Heat | Lane | Name | Time | Notes |
| 1 | 5 | 4 | Daiya Seto (JPN) | 4:04.28 | Q |
| 2 | 4 | 4 | László Cseh (HUN) | 4:04.61 | Q |
| 3 | 4 | 5 | Gal Nevo (ISR) | 4:05.99 | Q |
| 4 | 3 | 4 | Dávid Verrasztó (HUN) | 4:06.64 | Q |
| 5 | 4 | 3 | Diogo Carvalho (POR) | 4:07.42 | Q |
| 6 | 5 | 5 | Kosuke Hagino (JPN) | 4:07.78 | Q |
| 7 | 3 | 5 | Chris Christensen (DEN) | 4:08.38 | Q |
| 8 | 5 | 1 | Michael Weiss (USA) | 4:08.46 | Q |
| 9 | 3 | 3 | Travis Mahoney (AUS) | 4:09.59 | |
| 10 | 4 | 0 | Liu Weijia (CHN) | 4:09.76 | |
| 11 | 4 | 6 | Jakub Maly (AUT) | 4:10.18 | |
| 12 | 5 | 9 | Stephen Schmuhl (USA) | 4:10.38 | |
| 13 | 4 | 1 | Michael Meyer (RSA) | 4:11.08 | |
| 14 | 5 | 2 | Roberto Pavoni (GBR) | 4:11.17 | |
| 15 | 4 | 2 | Jan Świtkowski (POL) | 4:11.60 | |
| 16 | 3 | 6 | Yury Suvorau (BLR) | 4:12.36 | |
| 17 | 5 | 6 | Victor Bromer (DEN) | 4:12.70 | |
| 18 | 3 | 1 | Matthew Johnson (GBR) | 4:13.75 | |
| 19 | 5 | 8 | Aleksey Derlyugov (UZB) | 4:14.42 | |
| 20 | 3 | 9 | Alexis Santos (POR) | 4:14.44 | |
| 21 | 3 | 2 | Esteban Enderica (ECU) | 4:14.60 | |
| 22 | 5 | 3 | Maksym Shemberev (UKR) | 4:14.89 | |
| 23 | 4 | 7 | Taki Mrabet (TUN) | 4:15.52 | |
| 24 | 4 | 8 | Karol Zaczynski (POL) | 4:15.55 | |
| 25 | 5 | 7 | Pedro Pinotes (ANG) | 4:16.20 | |
| 26 | 3 | 8 | Christoph Meier (LIE) | 4:17.68 | |
| 27 | 3 | 7 | Kristian Kron (SWE) | 4:18.17 | |
| 28 | 2 | 3 | Esteban Paz (ARG) | 4:18.54 | NR |
| 29 | 2 | 5 | Richárd Nagy (SVK) | 4:22.01 | NR |
| 30 | 3 | 0 | Pang Sheng Jun (SIN) | 4:23.98 | |
| 31 | 2 | 6 | Marko Blaževski (MKD) | 4:24.62 | |
| 32 | 1 | 6 | Andrew Rutherford (BOL) | 4:26.13 | NR |
| 33 | 2 | 2 | Ayman Klzie (SYR) | 4:26.32 | |
| 34 | 4 | 9 | Vasilii Danilov (KGZ) | 4:26.70 | |
| 35 | 2 | 1 | Jean Luis Gómez (DOM) | 4:28.05 | |
| 36 | 5 | 0 | Sobitjon Amilov (UZB) | 4:29.28 | |
| 37 | 2 | 7 | Yeziel Morales (PUR) | 4:30.70 | |
| 38 | 1 | 5 | Charles Alexander Keller (PAN) | 4:32.10 | |
| 39 | 2 | 8 | Agnishwar Jayaprakash (IND) | 4:35.81 | |
| 40 | 2 | 0 | Arvind Mani (IND) | 4:39.80 | |
| 41 | 2 | 9 | Khader Baqleh (JOR) | 4:54.29 | |
| | 1 | 4 | Franc Aleksi (ALB) | DSQ | |
| | 2 | 4 | Anton Sveinn McKee (ISL) | DSQ | |
| | 1 | 3 | Marcos Lavado (VEN) | DNS | |

### Final

The final was held at 19:10.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Daiya Seto | Japan | 3:59.15 | AS |
| | 5 | László Cseh | Hungary | 4:00.50 | |
| | 6 | Dávid Verrasztó | Hungary | 4:02.87 | |
| 4 | 7 | Kosuke Hagino | Japan | 4:04.13 | |
| 5 | 3 | Gal Nevo | Israel | 4:04.29 | NR |
| 6 | 1 | Chris Christensen | Denmark | 4:06.81 | |
| 7 | 8 | Michael Weiss | United States | 4:07.67 | |
| 8 | 2 | Diogo Carvalho | Portugal | 4:09.95 | |