2001 World Championships in Athletics – Men's 400 metres
These are the official results of the Men's 400 metres event at the 2001 IAAF World Championships in Edmonton, Canada. There were a total number of 55 participating athletes, with seven qualifying heats, three semi-finals and the final held on Monday 6 August 2001 at 18:25h.Medalists
Records
Final
Semi-Finals
| RANK | HEAT 1 | TIME |
| 1. | | 44.89 |
| 2. | | 45.11 |
| 3. | | 45.14 |
| 4. | | 45.22 |
| 5. | | 45.50 |
| 6. | | 45.83 |
| 7. | | 46.12 |
| — | | DQ |
| RANK | HEAT 2 | TIME |
| 1. | | 44.83 |
| 2. | | 44.92 |
| 3. | | 45.10 |
| 4. | | 45.39 |
| 5. | | 45.91 |
| 6. | | 45.99 |
| 7. | | 46.62 |
| 8. | | 46.72 |
| RANK | HEAT 3 | TIME |
| 1. | | 44.66 |
| 2. | | 44.84 |
| 3. | | 45.14 |
| 4. | | 45.43 |
| 5. | | 45.44 |
| 6. | | 45.62 |
| 7. | | 46.69 |
| — | | DNF |
Heats
Held on Tuesday 7 August 2001
| RANK | HEAT 1 | TIME |
| 1. | | 44.88 |
| 2. | | 45.20 |
| 3. | | 45.27 |
| 4. | | 45.47 |
| 5. | | 45.82 |
| 6. | | 45.90 |
| — | | DQ |
| RANK | HEAT 2 | TIME |
| 1. | | 45.66 |
| 2. | | 45.66 |
| 3. | | 45.92 |
| 4. | | 46.18 |
| 5. | | 46.29 |
| 6. | | 46.56 |
| 7. | | 46.68 |
| 8. | | 52.69 |
| RANK | HEAT 3 | TIME |
| 1. | | 45.00 |
| 2. | | 45.02 |
| 3. | | 45.41 |
| 4. | | 45.57 |
| 5. | | 45.82 |
| 6. | | 47.22 |
| 7. | | 47.46 |
| 8. | | 47.87 |
| RANK | HEAT 4 | TIME |
| 1. | | 45.94 |
| 2. | | 46.49 |
| 3. | | 46.96 |
| 4. | | 47.32 |
| 5. | | 48.18 |
| 6. | | 48.19 |
| — | | DNF |
| — | | DQ |
| RANK | HEAT 5 | TIME |
| 1. | | 45.54 |
| 2. | | 45.60 |
| 3. | | 45.92 |
| 4. | | 46.01 |
| 5. | | 46.12 |
| 6. | | 46.13 |
| 7. | | 46.46 |
| 8. | | 57.83 |
| RANK | HEAT 6 | TIME |
| 1. | | 45.11 |
| 2. | | 45.35 |
| 3. | | 45.41 |
| 4. | | 45.54 |
| 5. | | 46.46 |
| 6. | | 47.03 |
| 7. | | 47.26 |
| 8. | | 49.61 |
| RANK | HEAT 7 | TIME |
| 1. | | 45.13 |
| 2. | | 45.15 |
| 3. | | 45.55 |
| 4. | | 45.92 |
| 5. | | 46.15 |
| 6. | | 46.22 |
| 7. | | 46.86 |
| 8. | | 55.57 |
