Swimming at the 1979 Pan American Games – Women's 100 metre butterfly Results Final

| Rank_ | Name_ | Nationality | Time_ | Notes_ |
|---|---|---|---|---|
| 1 | Jill Sterkel | United States | 1:00.53 | NR, GR |
| 2 | Lisa Buese | United States | 1:00.59 |  |
| 3 | Nancy Garapick | Canada | 1:02.96 |  |
| 4 | Shelley Cramer | U.S. Virgin Islands | 1:03.51 | NR |
| 5 | Susan Sloan | Canada | 1:03.52 |  |
| 6 | Maria Paris | Costa Rica | 1:03.58 |  |
| 7 | Rosanna Juncos | Argentina | 1:04.75 |  |
| 8 | Adriana Pereira | Brazil | 1:06.79 |  |