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

The women's 4 × 100 metre freestyle relay competition of the swimming events at the 2023 Pan American Games were held on October 21, 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 | Australia (AUS) Mollie O'Callaghan (52.08) Shayna Jack (51.69) Meg Harris (52.29) Emma McKeon (51.90) | 3:27.96 | Fukuoka, Japan | July 23, 2023 |
| Pan American Games record | Canada (CAN) Sandrine Mainville (54.43) Michelle Williams (54.42) Katerine Savard (54.53) Chantal van Landeghem (53.42) | 3:36.80 | Toronto, Canada | July 14, 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 | 2 | 5 | Stephanie Balduccini (55.61) Ana Vieira (54.63) Celine Bispo (55.90) Cristina Versiani (56.60) | Brazil | 3:42.74 | Q |
| 2 | 2 | 4 | Reilly Tiltmann (56.12) Camille Spink (55.49) Kayla Wilson (55.30) Olivia Bray (55.96) | United States | 3:42.47 | Q |
| 3 | 1 | 4 | Katerine Savard (55.70) Brooklyn Douthwright (55.50) Emma O'Croinin (55.67) Julie Brousseau (56.21) | Canada | 3:43.08 | Q |
| 4 | 2 | 3 | Laurent Estrada (56.91) Andrea Becali (56.63) Lorena González (57.19) Elisbet Gámez (55.90) | Cuba | 3:46.63 | Q |
| 5 | 1 | 3 | Sirena Rowe (56.93) Valentina Becerra (58.05) Isabella Bedoya (57.25) Isabella Arcila (56.40) | Colombia | 3:48.63 | Q |
| 6 | 2 | 6 | Guillermina Ruggiero (57.14) Florencia Perotti (57.76) Andrea Berrino (56.88) Lucía Gauna (57.24) | Argentina | 3:49.02 | Q |
| 7 | 1 | 5 | Sofía Revilak (57.12) Andrea Sansores (57.19) Susana Hernandez (57.84) Miranda Grana (57.54) | Mexico | 3:49.69 | Q |
| 8 | 2 | 2 | Carla Gonzalez (56.60) María Yegres (57.61) Fabiana Pesce (58.14) Mercedes Toledo (58.03) | Venezuela | 3:50.28 | Q |
| 9 | 1 | 6 | McKenna DeBever (57.16) Rafaela Fernandini (57.57) Sophia Ribeiro (59.26) Alexia Sotomayor (58.78) | Peru | 3:52.77 | R |
| 10 | 2 | 7 | Abril Aunchayna (59.29) María Solari (58.92) Nicole Frank (59.70) Luna Chabat (57.73) | Uruguay | 3:55.64 | R |
| 11 | 1 | 2 | Emily Macdonald (57.74) Morgan Cogle (1:02.42) Leanna Wainwright (1:01.60) Sabrina Lyn (59.97) | Jamaica | 4:01.73 | |
| 12 | 1 | 7 | María Santis (59.64) María Morales (59.80) Melissa Diego (1:01.69) Lucero Mejia (1:01.59) | Independent Athletes Team | 4:02.72 | |
| 13 | 2 | 1 | Zaylie Thompson (59.60) Katelyn Cabral (1:02.71) Ariel Weech (1:02.57) Victoria Russell (1:03.96) | Bahamas | 4:08.84 | |

### Final

The final was held on October 21.
| Rank | Lane | Name | Nationality | Time |
| | 3 | Mary-Sophie Harvey (54.69) Brooklyn Douthwright (54.99) Maggie Macneil (53.14) Katerine Savard (54.93) | Canada | 3:37.75 |
| | 5 | Gabi Albiero (55.02) Catie De Loof (54.19) Kayla Wilson (54.85) Amy Fulmer54.36 | United States | 3:38.42 |
| | 4 | Ana Vieira (54.67) Stephanie Balduccini (54.08) Giovanna Diamante (55.39) Celine Bispo (55.80) | Brazil | 3:39.94 |
| 4 | 1 | Athena Meneses (56.46) Sofía Revilak (55.90) Andrea Sansores (56.45) María Mata Cocco (56.09) | Mexico | 3:44.90 |
| 5 | 6 | Lorena González (57.31) Andrea Becali (55.64) Laurent Estrada (56.71) Elisbet Gámez (55.31) | Cuba | 3:44.97 |
| 6 | 7 | Andrea Berrino (57.14) Guillermina Ruggiero (56.67) Macaderna Ceballos (57.73) Lucía Gauna (56.30) | Argentina | 3:47.84 |
| 7 | 2 | Sirena Rowe (56.90) Isabella Bedoya (57.59) Karen Durango (57.42) Isabella Arcila (56.30) | Colombia | 3:48.21 |
| 8 | 8 | Carla Gonzalez (56.03) María Yegres (57.00) Fabiana Pesce (58.21) Mercedes Toledo (57.01) | Venezuela | 3:48.25 |