| Event: | Men's 400 metre individual medley |
| Competition: | 1998 FINA World Championships |
| Date: | 13 January 1998 |
| Competitors: | 25 |
| Win Value: | 4 minutes 14.95 seconds |
| Gold: | Tom Dolan |
| Goldnoc: | USA |
| Silver: | Marcel Wouda |
| Silvernoc: | NED |
| Bronze: | Curtis Myden |
| Bronzenoc: | CAN |
| Prev: | 1994 |
| Next: | 2001 |
The finals and the qualifying heats of the men's 400 metre individual medley event at the 1998 World Aquatics Championships were held on Tuesday 13 January 1998 in Perth, Western Australia.
| Rank | Name | Time | |
|---|---|---|---|
| 4:14.95 | |||
| 4:15.53 | |||
| 4:16.45 | |||
| 4 | 4:16.76 | ||
| 5 | 4:20.28 | ||
| 6 | 4:20.56 | ||
| 7 | 4:21.86 | ||
| 8 | 4:21.91 |
| Rank | Name | Time | |
|---|---|---|---|
| 9 | 4:21.66 | ||
| 10 | 4:22.14 | ||
| 11 | 4:23.24 | ||
| 12 | 4:26.79 | ||
| 13 | 4:27.18 | ||
| 14 | 4:29.75 | ||
| 15 | 4:30.66 | ||
| - | DSQ |
| Rank | Name | Time | |
|---|---|---|---|
| 1 | 4:17.91 | ||
| 2 | 4:18.70 | ||
| 3 | 4:19.67 | ||
| 4 | 4:20.13 | ||
| 5 | 4:21.22 | ||
| 6 | 4:21.50 | ||
| 7 | 4:21.95 | ||
| 8 | 4:22.07 | ||
| 9 | 4:22.77 | ||
| 10 | 4:22.90 | ||
| 11 | 4:23.93 | ||
| 12 | 4:28.70 | ||
| 13 | 4:28.72 | ||
| 14 | 4:29.42 | ||
| 15 | 4:29.71 | ||
| 16 | 4:30.83 | ||
| 17 | 4:30.91 | ||
| 18 | 4:30.94 | ||
| 19 | 4:31.47 | ||
| 20 | 4:31.89 | ||
| 21 | 4:32.76 | ||
| 22 | 4:32.91 | ||
| 23 | 4:33.52 | ||
| 24 | 4:33.95 | ||
| 25 | 4:34.72 |