# Swimming at the 2007 World Aquatics Championships – Men's 400 metre individual medley

The men's 400 metre individual medley (IM) at the 2007 World Aquatics Championships took place on 1 April (heats and final) at the Rod Laver Arena in Melbourne, Australia. As the event was over 400 meters in length, no semifinals were held in it and the top 8 swimmers from the preliminary heats advance directly to the single final heat. 50 swimmers were entered in the event, of which 49 swam.
Existing records at the start of the event were:
* World record (WR): 4:08.26, Michael Phelps (USA), August 17, 2004 in Athens, Greece
* Championship record (CR): 4:09.09, Michael Phelps (USA), Barcelona, Spain (July 27, 2003)

## Results
### Finals

| Place | Name | Nationality | Time | Note |
| 1 | Michael Phelps | USA | 4:06.22 | WR 25.56/55.05 1:26.70/1:58.18 2:33.30/3:09.33 3:38.43/4:06.22 |
| 2 | Ryan Lochte | USA | 4:09.74 | |
| 3 | Luca Marin | Italy | 4:09.88 | |
| 4 | László Cseh | Hungary | 4:14.76 | |
| 5 | Ioannis Drymonakos | Greece | 4:15.75 | |
| 6 | Vasileios Demetis | Greece | 4:16.83 | |
| 7 | Tamás Kerékjártó | Hungary | 4:17.32 | |
| -- | Oussama Mellouli | Tunisia | 4:11.68 | Result nullified (see his record for note) |

### Heats

| Rank | Swimmer | Nation | Time | Note |
| 1 | Michael Phelps | USA | 4:12.01 | Q |
| 2 | Luca Marin | Italy | 4:13.33 | Q |
| 3 | Oussama Mellouli | Tunisia | 4:13.44 | Q |
| 4 | Ryan Lochte | USA | 4:13.71 | Q |
| 5 | László Cseh | Hungary | 4:15.41 | Q |
| 6 | Ioannis Drymonakos | Greece | 4:16.65 | Q |
| 7 | Tamás Kerékjártó | Hungary | 4:17.68 | Q |
| 8 | Vasileios Demetis | Greece | 4:17.73 | Q |
| 9 | Andrey Krylov | Russia | 4:18.15 | |
| 10 | Dean Kent | New Zealand | 4:18.32 | |
| 11 | Alessio Boggiatto | Italy | 4:18.82 | |
| 12 | Brian Johns | Canada | 4:19.39 | |
| 13 | Travis Nederpelt | Australia | 4:20.22 | |
| 14 | Paweł Korzeniowski | Poland | 4:20.99 | |
| 15 | Shinya Taniguchi | Japan | 4:22.43 | |
| 16 | Hidemasa Sano | Japan | 4:22.68 | |
| 17 | David Carry | Great Britain | 4:22.76 | |
| 18 | Mihail Alexandrov | Bulgaria | 4:23.24 | NR |
| 19 | ZHAO Tao | China | 4:24.37 | |
| 20 | Dinko Jukić | Austria | 4:24.65 | |
| 21 | Kvetosla Svoboda | Czech Republic | 4:25.13 | |
| 22 | Gard Kvale | Norway | 4:25.37 | NR |
| 23 | LI Ziqiang | China | 4:25.72 | |
| 24 | Carlos Almeida | Portugal | 4:26.42 | |
| 25 | Adam Lucas | Australia | 4:26.45 | |
| 26 | Andre Schultz | Brazil | 4:27.00 | |
| 27 | Ahmed Mathlouthi | Tunisia | 4:28.32 | |
| 28 | Duarte Mourao | Portugal | 4:28.87 | |
| 29 | Chris Christensen | Denmark | 4:28.93 | |
| 30 | Saša Imprić | Croatia | 4:29.75 | |
| 31 | Miguel Molina | Philippines | 4:34.23 | |
| 32 | Vasilii Danilov | Kyrgyzstan | 4:35.63 | |
| 33 | Diego Bonilla | Colombia | 4:35.96 | |
| 34 | Benjamin Guzman Blanco | Chile | 4:36.80 | |
| 35 | Shohruh Yunusov | Uzbekistan | 4:36.81 | |
| 36 | Rehan Poncha | India | 4:37.32 | |
| 37 | Sobitjon Amilov | Uzbekistan | 4:37.92 | |
| 38 | Dmitriy Gordiyenko | Kazakhstan | 4:39.15 | |
| 39 | Zhi Cong Lim | Singapore | 4:41.01 | |
| 40 | Iurii Zakharov | Kyrgyzstan | 4:41.75 | |
| 41 | Gianmarco Mosto | Peru | 4:43.17 | |
| 42 | Diego Castillo Granados | Panama | 4:47.72 | |
| 43 | Juan Montenegro | Guatemala | 4:47.79 | |
| 44 | Colin Bensadon | Gibraltar | 4:48.26 | |
| 45 | Wing Cheung Victor Wong | Macau | 4:48.99 | |
| 46 | Melvin Chua | Malaysia | 4:49.73 | |
| 47 | Eli Ebenezer Wong | Northern Mariana Islands | 5:10.44 | |
| -- | Nicolas Rostoucher | France | DNS | |
| -- | Jehad Al Henidi | Jordan | DQ | |
| -- | Thiago Pereira | Brazil | DQ | |