Swimming at the 1991 Pan American Games – Women's 100 metre butterfly
# Swimming at the 1991 Pan American Games – Women's 100 metre butterfly

The women's 100 metre butterfly competition of the swimming events at the 1991 Pan American Games took place on 16 August. The last Pan American Games champion was Janel Jorgensen of US.

This race consisted of two lengths of the pool, all in butterfly.

## 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 16.

| Rank | Name | Nationality | Time |
| - | - | - | - |
| | Kristin Topham | Canada | 1:01.19 |
| | Angie Wester-Krieg | United States | 1:01.55 |
| | Suzy Buckovich | United States | 1:01.60 |
| 4 | Niuvis Rosales | Cuba | 1:03.10 |
| 5 | Gabriela Gaja | Mexico | 1:03.32 |
| 6 | Beth Hazel | Canada | 1:03.64 |
| 7 | Celina Endo | Brazil | 1:04.23 |
| 8 | Shelley Cramer | U.S. Virgin Islands | 1:04.82 |
