# Swimming at the 2023 Pan American Games – Women's 4 × 100 metre medley relay

The women's 4 × 100 metre medley relay competition of the swimming events at the 2023 Pan American Games were held on October 25, 2023, at the Aquatic Center in Santiago, Chile.

## Records

Prior to this competition, the existing world and Pan American Games records were as follows:
| World record | Regan Smith (57.57) Lilly King (1:04.81) Kelsi Dahlia (56.16) Simone Manuel (51.86) (USA) | 3:50.40 | Gwangju, South Korea | July 28 2019 |
| Pan American Games record | Natalie Coughlin (59.05) Katie Meili (1:06.06) Kelsi Worrell (57.34) Allison Schmitt (54.08) (USA) | 3:56.53 | Toronto, Canada | July 18, 2015 |

## Results

| KEY: | QA | Qualified for A final | QB | Qualified for B final | GR | Games record | NR | National record | PB | Personal best | SB | Seasonal best |

### Heats

The highest eight scores advance to the final.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 4 | Madelyn Gatrall (1:02.11) Sophie Angus (1:06.77) Katerine Savard (1:09.49) Brooklyn Douthwright (46.82) | Canada | 4:05.19 | Q |
| 2 | 2 | 4 | Reilly Tiltmann (1:01.80) Anna Keating (1:10.82) Olivia Bray (59.21) Gabi Albiero (54.60) | United States | 4:06.43 | Q |
| 3 | 2 | 6 | Isabella Arcila (1:02.68) Stefanía Gómez (1:09.54) Valentina Becerra Karen Durango | Colombia | 4:10.54 | Q |
| 4 | 2 | 5 | Julia Góes (1:04.71) Nichelly Lysy (1:11.28) Giovanna Diamante (1:01.17) Ana Carolina Vieira (54.22) | Brazil | 4:11.38 | Q |
| 5 | 1 | 5 | Andrea Sansores (1:02.40) Fernanda Jimenez (1:12.03) Miriam Guevara Athena Meneses | Mexico | 4:13.11 | Q |
| 6 | 1 | 3 | Carla González (1:03.04) Mercedes Toledo (1:10.16) María Yegres (1:02.46) Lismar Lyon (57.99) | Venezuela | 4:13.65 | Q |
| 7 | 2 | 3 | Candela Raviola (1:05.06) Martina Barbeito (1:10.22) Macarena Ceballos (1:02.05) Guillermina Ruggiero (56.64) | Argentina | 4:13.97 | Q |
| 8 | 1 | 6 | Laurent Estrada (1:03.89) Daysi Ramírez (1:13.93) Lorena González (1:04.44) Elisbet Gámez (56.31) | Cuba | 4:18.57 | Q |
| 9 | 2 | 7 | Sarah Szklaruk (1:05.52) Antonia Cubillos (1:13.83) Monstserrat Spielmann (1:02.52) Inés Marín (56.94) | Chile | 4:18.81 | R |
| 10 | 2 | 2 | Abril Aunchayna (1:05.36) Nicole Frank (1:12.53) María Solari (1:06.45) Luna Chabat (58.03) | Uruguay | 4:22.37 | R |
| 11 | 1 | 7 | Leanna Wainwright (1:07.03) Sabrina Lyn (1:13.99) Morgan Cogle (1:08.44) Emily MacDonald (58.20) | Jamaica | 4:27.66 | |
| 12 | 2 | 1 | Melissa Diego (1:05.58) Nicole Mack (1:18.12) María Morales (1:06.88) María Santis (1:00.74) | Independent Athletes Team | 4:31.32 | |
| 13 | 1 | 1 | Zaylie Thompson (1:09.78) Victoria Russell (1:17.91) Katelyn Cabral (1:05.44) Ariel Weech (1:00.90) | Bahamas | 4:34.03 | |
| | 1 | 2 | | Peru | DNS | |

### Final

The final was held on October 25.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Danielle Hanus (1:00.97) Rachel Nicol (1:07.14) Maggie MacNeil (56.83) Mary-Sophie Harvey (53.82) | Canada | 3:58.76 | |
| | 5 | Josephine Fuller (1:00.47) Emma Webber (1:07.39) Kelly Pash (57.62) Catie Deloof (53.91) | United States | 3:59.39 | |
| | 2 | Miranda Grana (1:01.86) Melissa Rodríguez (1:07.44) María José Mata (59.40) Sofía Revilak (56.03) | Mexico | 4:04.73 | |
| 4 | 3 | Isabella Arcila (1:02.15) Stefanía Gómez (1:08.45) Valentina Becerra (58.63) Sirena Rowe (55.56) | Colombia | 4:04.79 | NR |
| 5 | 6 | Maria Luiza Pessanha (1:02.88) Jhennifer Conceição (1:08.52) Clarissa Rodriguez (59.85) Stephanie Balduccini (53.70) | Brazil | 4:04.95 | |
| 6 | 1 | Andrea Berrino (1:01.88) Macarena Ceballos (1:07.80) Agostina Hein Lucía Gauna | Argentina | 4:07.70 | |
| 7 | 7 | Carla González (1:02.68) Mercedes Toledo (1:09.32) Lismar Lyon (1:01.02) María Yegres (58.13) | Venezuela | 4:11.15 | |
| 8 | 8 | Laurent Estrada (1:04.02) Daysi Ramírez (1:13.22) Lorena González (1:03.66) Elisbet Gámez (55.69) | Cuba | 4:16.59 | |