1983 World Championships in Athletics – Men's 400 metres hurdles

These are the official results of the men's 400 metres hurdles event at the 1983 IAAF World Championships in Helsinki, Finland. There were a total number of 34 participating athletes, with five qualifying heats, two semi-finals and the final held on 9 August 1983.

Records
Existing records at the start of the event.

Semi-finals

 * Held on Monday 1983-08-08

Qualifying heats

 * Held on Sunday 1983-08-07