These are the official results of the Men's 50 km Walk event at the 1991 World Championships held on Saturday August 31, 1991, in Tokyo, Japan, with the start at 07:00h local time. There were a total number of 38 participating athletes.
Although just one gold medal was awarded, the silver medallist was given the same time as the gold medallist. As of 2024, this is the only time the men's 50 km walk was won by less than ten seconds at these championships. In 2022, the event was replaced with the 35 km walk.
| Gold | Aleksandr Potashov Soviet Union (URS) | |
| Silver | Andrey Perlov Soviet Union (URS) | |
| Bronze | Hartwig Gauder Germany (GER) |
| DNS | did not start | |
| NM | no mark | |
| WR | world record | |
| WL | world leading | |
| AR | area record | |
| NR | national record | |
| PB | personal best | |
| SB | season best |
| RANK | FINAL | TIME | |
|---|---|---|---|
| 3:53:09 | |||
| 3:53:09 | |||
| 3:55:14 | |||
| 4. | 4:00:10 | ||
| 5. | 4:02:34 | ||
| 6. | 4:03:43 | ||
| 7. | 4:06:07 | ||
| 8. | 4:06:30 | ||
| 9. | 4:07:44 | ||
| 10. | 4:09:18 | ||
| 11. | 4:11:56 | ||
| 12. | 4:13:19 | ||
| 13. | 4:13:32 | ||
| 14. | 4:14:23 | ||
| 15. | 4:14:35 | ||
| 16. | 4:14:59 | ||
| 17. | 4:16:36 | ||
| 18. | 4:26:24 | ||
| 19. | 4:27:23 | ||
| 20. | 4:29:45 | ||
| 21. | 4:34:41 | ||
| 22. | 4:35:22 | ||
| 23. | 4:38:09 | ||
| 24. | 4:39:15 | ||
| - | DNF | ||
| - | DNF | ||
| - | DNF | ||
| - | DNF | ||
| - | DNF | ||
| - | DNF | ||
| - | DNF | ||
| - | DNF | ||
| - | DNF | ||
| - | DNF | ||
| - | DNF | ||
| - | DNF | ||
| - | DSQ | ||
| - | DSQ |