| Event: | Men's 100 metre freestyle |
| Games: | 1979 |
| Venue: | Piscina Olimpica Del Escambron |
| Dates: | July 8 (preliminaries and finals) |
| Competitors: | - |
| Nations: | - |
| Win Label: | Winning score |
| Gold: | David McCagg |
| Goldnoc: | USA |
| Silver: | Fernando Cañales |
| Silvernoc: | PUR |
| Bronze: | John Newton |
| Bronzenoc: | USA |
| Prev: | 1975 |
| Next: | 1983 |
The men's 100 metre freestyle competition of the swimming events at the 1979 Pan American Games took place on 8 July at the Piscina Olimpica Del Escambron.[1] The last Pan American Games champion was Richard Abbott of US.[2] [3] [4] [5] [6] [7]
This race consisted of two lengths of the pool, both lengths being in freestyle.[8]
All times are in minutes and seconds.
The first round was held on July 8.
| Rank | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|
| 1 | 51.43 | Q | |||
| 2 | 52.07 | Q | |||
| 3 | 52.36 | Q | |||
| 4 | 53.15 | Q | |||
| 5 | 53.32 | Q | |||
| 6 | 53.80 | Q, NR | |||
| 7 | 53.82 | Q | |||
| 8 | 54.21 | Q | |||
| 9 | 54.54 | NR | |||
| 10 | 54.63 | NR | |||
| 11 | 54.73 | ||||
| 12 | 54.81 | ||||
| 13 | 55.08 | ||||
| 14 | 55.24 | ||||
| 15 | 55.25 | ||||
| 16 | 55.49 | ||||
| 17 | 55.87 | ||||
| 18 | 56.13 | ||||
| 19 | 57.04 | ||||
| 20 | 57.20 | ||||
| 21 | 57.20 | ||||
| 22 | 58.21 | NR | |||
| 23 | 58.58 | ||||
| 24 | 1:00.03 |
The final was held on July 8.
| Rank | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|
| 50.77 | |||||
| 51.25 | |||||
| 51.45 | |||||
| 4 | 52.93 | ||||
| 5 | 53.26 | NR | |||
| 6 | 53.28 | ||||
| 7 | 53.37 | ||||
| 8 | 54.15 |