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.Medalists
Records
Existing records at the start of the event.Final
Semi-Finals
| RANK | HEAT 1 | TIME |
| 1. | | 48.11 |
| 2. | | 48.99 |
| 3. | | 49.18 |
| 4. | | 49.75 |
| 5. | | 50.04 |
| 6. | | 50.31 |
| 7. | | 50.54 |
| — | | DNS |
| RANK | HEAT 2 | TIME |
| 1. | | 48.57 |
| 2. | | 48.63 |
| 3. | | 49.17 NR |
| 4. | | 49.18 |
| 5. | | 49.51 |
| 6. | | 49.91 |
| 7. | | 49.99 |
| 8. | | 50.91 |
Qualifying heats
| RANK | HEAT 1 | TIME |
| 1. | | 50.44 |
| 2. | | 50.99 |
| 3. | | 51.23 |
| 4. | | 51.45 |
| 5. | | 53.25 |
| 6. | | 54.68 |
| — | | DNF |
| RANK | HEAT 2 | TIME |
| 1. | | 50.12 |
| 2. | | 50.23 |
| 3. | | 50.53 |
| 4. | | 50.86 |
| 5. | | 50.97 |
| 6. | | 50.99 |
| RANK | HEAT 3 | TIME |
| 1. | | 50.15 |
| 3. | | 50.39 |
| 3. | | 50.64 |
| 4. | | 50.68 |
| 5. | | 50.76 |
| 6. | | 51.80 |
| 7. | | 52.32 |
| RANK | HEAT 4 | TIME |
| 1. | | 49.54 |
| 2. | | 50.44 |
| 3. | | 50.59 |
| 4. | | 50.62 |
| 5. | | 50.92 |
| 6. | | 52.34 |
| 7. | | DSQ |
| RANK | HEAT 5 | TIME |
| 1. | | 49.99 |
| 2. | | 50.09 |
| 3. | | 50.09 |
| 4. | | 50.53 |
| 5. | | 51.67 |
| 6. | | 51.92 |
| 7. | | 52.02 |
