Swimming at the 1991 Pan American Games – Men's 100 metre breaststroke
# Swimming at the 1991 Pan American Games – Men's 100 metre breaststroke

The men's 100 metre breaststroke competition of the swimming events at the 1991 Pan American Games took place on 12 August. The last Pan American Games champion was Richard Korhammer of US.

This race consisted of two lengths of the pool, both lengths being in breaststroke.

## Results

All times are in minutes and seconds.

| KEY: | q | Fastest non-qualifiers | Q | Qualified | GR | Games record | NR | National record | PB | Personal best | SB | Seasonal best |
| - | - | - | - | - | - | - | - | - | - | - | - | - |

### Final

The final was held on August 12.

| Rank | Name | Nationality | Time |
| - | - | - | - |
| | Hans Dersch | United States | 1:02.57 |
| | Todd Torres | Puerto Rico | 1:02.83 |
| | Jeff Commings | United States | 1:03.02 |
| 4 | Pedro Hernández | Cuba | 1:03.26 |
| 5 | Mario González | Cuba | 1:03.56 |
| 6 | Robert Fox | Canada | 1:03.86 |
| 7 | Jaime Mitropoulos | Brazil | 1:05.04 |
| 8 | Gustavo Gorriaran | Uruguay | 1:05.82 |
