| Event: | Men's 100 metre freestyle |
| Competition: | 1975 FINA World Championships |
| Dates: | 27 July 1975 (heats) 27 July 1975 (final) |
| Competitors: | 31 |
| Win Value: | 51.25 seconds |
| Gold: | Andy Coan |
| Goldnoc: | USA |
| Silver: | Vladimir Bure |
| Silvernoc: | URS |
| Bronze: | Jim Montgomery |
| Bronzenoc: | USA |
| Prev: | 1973 |
| Next: | 1978 |
See main article: Swimming at the 1975 World Aquatics Championships.
The men's 100 metre freestyle event at the 1975 World Aquatics Championships took place 27 July.
| Rank | Swimmer | Nation | Time | Notes | |
|---|---|---|---|---|---|
| 1 | 51.23 | CR | |||
| 2 | 51.93 | ||||
| 3 | 52.13 | ||||
| 4 | 52.44 | ||||
| 5 | 52.48 | ||||
| 6 | 52.61 | ||||
| 7 | 53.06 | ||||
| 8 | 53.35 | ||||
| 9 | 53.92 | ||||
| 10 | 53.93 | ||||
| 11 | 53.95 | ||||
| 12 | 53.96 | ||||
| 13 | 54.26 | ||||
| 14 | 54.27 | ||||
| 15 | 54.36 | ||||
| 16 | 54.44 | ||||
| 17 | 54.55 | ||||
| 18 | 54.57 | ||||
| 19 | 54.76 | ||||
| 20 | 54.77 | ||||
| 21 | 55.47 | ||||
| 22 | 55.96 | ||||
| 23 | 56.07 | ||||
| 23 | 56.07 | ||||
| 25 | 56.19 | ||||
| 26 | 56.24 | ||||
| 27 | 56.83 | ||||
| 28 | 57.36 | ||||
| 29 | 57.80 | ||||
| 30 | 57.91 | ||||
| 31 | 57.99 |
| Rank | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|
| 51.25 | CR | ||||
| 51.32 | |||||
| 51.44 | |||||
| 4 | 52.15 | ||||
| 5 | 52.20 | ||||
| 6 | 52.55 | ||||
| 7 | 52.66 | ||||
| 8 | 53.71 |