Athletics at the 2002 Asian Games – Men's 400 metres
The men's 400 metres competition at the 2002 Asian Games in Busan, South Korea was held on 7–9 October at the Busan Asiad Main Stadium.

Schedule
All times are Korea Standard Time (UTC+09:00)

Records

Results 
Legend
DNF — Did not finish

1st round 
 Qualification: First 4 in each heat (Q) and the next 4 fastest (q) advance to the semifinals.

Heat 1

Heat 2

Heat 3

Semifinals 
 Qualification: First 4 in each heat (Q) advance to the final.

Heat 1

Heat 2

Final