| Event: | Men's 400 metre freestyle |
| Games: | 2002 Asian Games |
| Venue: | Sajik Swimming Pool |
| Date: | 2 October 2002 |
| Competitors: | 10 |
| Nations: | 7 |
| Gold: | Shunichi Fujita |
| Goldnoc: | JPN |
| Silver: | Yu Cheng |
| Silvernoc: | CHN |
| Bronze: | Han Kyu-chul |
| Bronzenoc: | KOR |
| Prev: | 1998 |
| Next: | 2006 |
See main article: Swimming at the 2002 Asian Games.
The men's 400 metre freestyle swimming competition at the 2002 Asian Games in Busan was held on 2 October at the Sajik Swimming Pool.
All times are Korea Standard Time
| width=220 | Date | width=50 | Time | width=100 | Event |
|---|---|---|---|---|---|
| Wednesday, 2 October 2002 | 10:00 | Heats | |||
| 19:00 | Final |
| width=40 | Rank | width=40 | Heat | width=250 | Athlete | width=80 | Time | width=50 | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3:53.23 | |||||||
| 2 | 1 | 3:56.75 | |||||||
| 3 | 2 | 3:57.49 | |||||||
| 4 | 2 | 3:57.52 | |||||||
| 5 | 2 | 4:03.94 | |||||||
| 6 | 1 | 4:04.13 | |||||||
| 7 | 1 | 4:04.18 | |||||||
| 8 | 1 | 4:05.59 | |||||||
| 9 | 2 | 4:10.38 | |||||||
| — | 1 | DNS |
| width=40 | Rank | width=250 | Athlete | width=80 | Time | width=50 | Notes |
|---|---|---|---|---|---|---|---|
| 3:50.41 | |||||||
| 3:54.57 | |||||||
| 3:56.10 | |||||||
| 4 | 3:57.87 | ||||||
| 5 | 4:01.11 | ||||||
| 6 | 4:02.09 | ||||||
| 7 | 4:02.98 | ||||||
| 8 | 4:06.10 |