| Year: | 2023 |
| Event: | Women's 100 metre butterfly |
| Venue: | Aquatic Centre |
| Date: | October 22 |
| Competitors: | 28 |
| Nations: | 21 |
| Gold: | Maggie MacNeil |
| Goldnoc: | CAN |
| Silver: | Kelly Pash |
| Silvernoc: | USA |
| Bronze: | Olivia Bray |
| Bronzenoc: | USA |
| Prev: | 2019 |
| Next: | 2027 |
The women's 100 metre butterfly competition of the swimming events at the 2023 Pan American Games were held on October 22, 2023, at the Aquatic Center in Santiago, Chile.[1]
Prior to this competition, the existing world and Pan American Games records were as follows:
| World record | 55.48 | Rio de Janeiro, Brazil | August 7, 2016 | ||
| Pan American Games record | 57.24 | Toronto, Canada | July 16, 2015 |
| KEY: | QA | Qualified for A final | QB | Qualified for B final | GR | Games record | NR | National record | PB | Personal best | SB | Seasonal best |
The highest eight scores advance to the final.[2]
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|---|
| 1 | 3 | 4 | Kelly Pash | 58.34 | QA | |
| 2 | 2 | 4 | Olivia Bray | 58.84 | QA | |
| 3 | 3 | 6 | Valentina Becerra | 59.70 | QA | |
| 4 | 4 | 4 | Maggie MacNeil | 59.73 | QA | |
| 5 | 2 | 6 | Anicka Delgado | 59.79 | QA | |
| 6 | 4 | 5 | Katerine Savard | 59.87 | QA | |
| 7 | 4 | 2 | Clarissa Rodrigues | 1:00.02 | QA | |
| 8 | 3 | 5 | Giovanna Diamante | 1:00.47 | QA | |
| 9 | 4 | 3 | Celine Bispo | 1:00.47 | QB | |
| 10 | 3 | 3 | Miriam Guevara | 1:00.74 | QB | |
| 11 | 2 | 2 | Emma Harvey | 1:01.40 | QB | |
| 12 | 2 | 5 | Athena Meneses | 1:01.81 | QB | |
| 13 | 3 | 7 | Lismar Lyon | 1:01.88 | QB | |
| 14 | 4 | 6 | Karen Durango | 1:02.31 | QB | |
| 15 | 3 | 2 | Jade Foelske | 1:02.35 | QB | |
| 16 | 4 | 8 | María Schutzmeier | 1:02.43 | QB | |
| 17 | 2 | 7 | Monstserrat Spielmann | 1:02.53 | ||
| 18 | 3 | 1 | Lorena González | 1:03.08 | ||
| 19 | 2 | 3 | Luana Alonso | 1:03.21 | ||
| 20 | 3 | 8 | María Fé Muñoz | 1:03.35 | ||
| 21 | 2 | 1 | Julimar Ávila | 1:03.36 | ||
| 22 | 4 | 7 | Sabrina Lyn | 1:04.09 | ||
| 22 | 4 | 1 | Isabella Alas | 1:04.09 | ||
| 24 | 2 | 8 | Sierrah Broadbelt | 1:04.48 | ||
| 25 | 1 | 4 | Aleka Persaud | 1:05.75 | ||
| 26 | 1 | 3 | María Morales | 1:07.93 | ||
| 27 | 1 | 5 | Kennice Greene | 1:09.03 | ||
| 28 | 1 | 6 | Kaeylin Djoparto | 1:13.47 | ||
The B final was held on October 21.[3]
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 9 | 3 | Emma Harvey | 1:00.72 | ||
| 10 | 5 | Miriam Guevara | 1:00.74 | ||
| 11 | 6 | Athena Meneses | 1:00.84 | ||
| 12 | 4 | Celine Bispo | 1:00.88 | ||
| 13 | 7 | Karen Durango | 1:00.98 | ||
| 14 | 2 | Lismar Lyon | 1:01.86 | ||
| 15 | 1 | Jade Foelske | 1:02.19 | ||
| 16 | 8 | María Schutzmeier | 1:02.33 | ||
The A final was held on October 21.[3]
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 6 | Maggie MacNeil | 56.94 | |||
| 4 | Kelly Pash | 57.85 | |||
| 5 | Olivia Bray | 58.36 | |||
| 4 | 3 | Valentina Becerra | 59.21 | NR | |
| 5 | 7 | Katerine Savard | 59.40 | ||
| 6 | 8 | Giovanna Diamante | 1:00.21 | ||
| 7 | 1 | Clarissa Rodrigues | 1:00.50 | ||
| 8 | 2 | Anicka Delgado | 1:00.52 | ||