Swimming at the 2019 Pan American Games – Women's 100 metre freestyle
The women's 100 metre freestyle competition of the swimming events at the 2019 Pan American Games are scheduled to be held August 8th, 2019 at the Villa Deportiva Nacional Videna cluster.
Records
Prior to this competition, the existing world and Pan American Games records were as follows:| World Record | 51.71 | Budapest, Hungary | July 23, 2017 | |
| Pan American Games record | 53.83 | Toronto, Canada | July 14, 2015 |
Results
Heats
The first round was held on August 8.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | 4 | Margo Geer | 54.65 | QA | |
| 2 | 4 | 5 | Alexia Zevnik | 55.36 | QA | |
| 3 | 2 | 5 | Alyson Ackman | 55.78 | QA | |
| 4 | 2 | 4 | Larissa Oliveira | 56.02 | QA | |
| 5 | 3 | 4 | Lia Neal | 56.49 | QA | |
| 6 | 3 | 5 | Daynara de Paula | 56.65 | QA | |
| 7 | 4 | 3 | Elisbet Gámez Matos | 57.03 | QA | |
| 8 | 2 | 3 | Karen Torrez | 57.19 | QA | |
| 9 | 3 | 6 | Allyson Ponson | 57.28 | QB | |
| 10 | 1 | 5 | Sirena Rowe | 57.48 | QB | |
| 11 | 4 | 6 | Anicka Delgado | 57.51 | QB | |
| 12 | 3 | 3 | Jeserik Pinto | 57.57 | WD | |
| 13 | 4 | 8 | Inés Marín | 58.08 | QB | |
| 14 | 4 | 2 | Julimar Avila | 58.15 | QB | |
| 15 | 3 | 2 | Emily MacDonald | 58.19 | QB | |
| 16 | 2 | 6 | María Mejia | 58.57 | QB | |
| 17 | 2 | 2 | Madelyn Moore | 59.02 | QB | |
| 18 | 3 | 8 | Jessica Cattaneo | 59.05 | ||
| 19 | 2 | 1 | Rafaela Erazo | 59.31 | ||
| 20 | 2 | 8 | Lillian Higgs | 59.32 | ||
| 20 | 3 | 7 | Maria Schutzmeier | 59.32 | ||
| 22 | 4 | 7 | Giselle Gursoy | 59.34 | ||
| 23 | 3 | 1 | Catharine Cooper | 59.66 | ||
| 24 | 2 | 7 | Inés Remersaro | 59.69 | ||
| 25 | 4 | 1 | Lauren Hew | |||
| 26 | 1 | 5 | Mya de Freitas | |||
| 27 | 1 | 4 | Bianca Mitchell | |||
| 28 | 1 | 3 | Nikita Fiedtkou |
Final B
The b final was also held on August 8.| Rank | Lane | Name | Nationality | Time | Notes |
| 9 | 4 | Allyson Ponson | 57.06 | ||
| 10 | 3 | Anicka Delgado | 57.13 | ||
| 11 | 5 | Sirena Rowe | 57.64 | ||
| 12 | 2 | Julimar Avila | 57.74 | NR | |
| 13 | 6 | Inés Marín | 57.89 | ||
| 14 | 1 | María Mejia | 57.94 | ||
| 15 | 7 | Emily MacDonald | 58.07 | ||
| 16 | 8 | Madelyn Moore | 58.68 |
Final A
The A final was also held on August 8.| Rank | Lane | Name | Nationality | Time | Notes |
| 4 | Margo Geer | 54.17 | |||
| 5 | Alexia Zevnik | 55.04 | |||
| 6 | Larissa Oliveira | 55.25 | |||
| 4 | 2 | Lia Neal | 55.62 | ||
| 5 | 3 | Alyson Ackman | 55.81 | ||
| 6 | 8 | Karen Torrez | 56.59 | ||
| 7 | 7 | Daynara de Paula | 56.88 | ||
| 8 | 1 | Elisbet Gámez Matos | 57.05 |