| Event: | Men's 400 metre individual medley |
| Competition: | 2007 FINA World Championships |
| Venue: | Rod Laver Arena |
| Date: | 1 April 2007 |
| Competitors: | 50 |
| Win Value: | 4:06.22 |
| Gold: | Michael Phelps |
| Goldnoc: | USA |
| Silver: | Ryan Lochte |
| Silvernoc: | USA |
| Bronze: | Luca Marin |
| Bronzenoc: | ITA |
| Prev: | 2005 |
| Next: | 2009 |
See main article: Swimming at the 2007 World Aquatics Championships.
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:
4:08.26, Michael Phelps (USA), August 17, 2004 in Athens, Greece
4:09.09, Michael Phelps (USA), Barcelona, Spain (July 27, 2003)
| Place | Name | Nationality | Time | Note |
|---|---|---|---|---|
| 1 | 4:06.22 | 25.56/55.05 1:26.70/1:58.18 2:33.30/3:09.33 3:38.43/4:06.22 | ||
| 2 | 4:09.74 | |||
| 3 | 4:09.88 | |||
| 4 | 4:14.76 | |||
| 5 | 4:15.75 | |||
| 6 | 4:16.83 | |||
| 7 | 4:17.32 | |||
| -- | Result nullified (see his record for note) | |||
| Rank | Swimmer | Nation | Time | Note |
|---|---|---|---|---|
| 1 | 4:12.01 | Q | ||
| 2 | 4:13.33 | Q | ||
| 3 | Q | |||
| 4 | 4:13.71 | Q | ||
| 5 | 4:15.41 | Q | ||
| 6 | 4:16.65 | Q | ||
| 7 | 4:17.68 | Q | ||
| 8 | 4:17.73 | Q | ||
| 9 | 4:18.15 | |||
| 10 | 4:18.32 | |||
| 11 | 4:18.82 | |||
| 12 | 4:19.39 | |||
| 13 | 4:20.22 | |||
| 14 | 4:20.99 | |||
| 15 | 4:22.43 | |||
| 16 | 4:22.68 | |||
| 17 | 4:22.76 | |||
| 18 | 4:23.24 | NR | ||
| 19 | 4:24.37 | |||
| 20 | 4:24.65 | |||
| 21 | 4:25.13 | |||
| 22 | 4:25.37 | NR | ||
| 23 | 4:25.72 | |||
| 24 | 4:26.42 | |||
| 25 | 4:26.45 | |||
| 26 | 4:27.00 | |||
| 27 | 4:28.32 | |||
| 28 | 4:28.87 | |||
| 29 | 4:28.93 | |||
| 30 | 4:29.75 | |||
| 31 | 4:34.23 | |||
| 32 | 4:35.63 | |||
| 33 | 4:35.96 | |||
| 34 | 4:36.80 | |||
| 35 | 4:36.81 | |||
| 36 | 4:37.32 | |||
| 37 | 4:37.92 | |||
| 38 | 4:39.15 | |||
| 39 | 4:41.01 | |||
| 40 | 4:41.75 | |||
| 41 | 4:43.17 | |||
| 42 | 4:47.72 | |||
| 43 | 4:47.79 | |||
| 44 | 4:48.26 | |||
| 45 | 4:48.99 | |||
| 46 | 4:49.73 | |||
| 47 | 5:10.44 | |||
| -- | DNS | |||
| -- | DQ | |||
| -- | DQ | |||