# Swimming at the 2023 Pan American Games – Mixed 4 × 100 metre medley relay

The mixed 4 × 100 metre medley relay competition of the swimming events at the 2023 Pan American Games were held on October 23, 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 | Kathleen Dawson (58.80) Adam Peaty (56.78) James Guy (50.00) Anna Hopkin (52.00) (GBR) | 3:37.58 | Tokyo, Japan | July 31, 2021 |
| Pan American Games record | Kennedy Noble (59.72) Jacob Foster (1:00.09) Kelly Pash (57.51) Jonny Kulow (47.39) (USA) | 3:48.27 | Lima, Peru | August 8, 2019 |

## 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 | 4 | Jack Aikins (54.09) Arsenio Bustos (1:02.69) Olivia Bray (59.48) Kayla Wilson (55.49) | United States | 3:51.75 | Q |
| 2 | 1 | 4 | Blake Tierney (55.92) James Dergousoff (1:01.87) Katerine Savard (59.95) Brooklyn Douthwright (55.65) | Canada | 3:53.39 | Q |
| 3 | 2 | 5 | Gabriel Fantoni (55.83) Jhennifer Conceição (1:09.72) Victor Baganha (53.06) Giovanna Diamante (57.11) | Brazil | 3:55.72 | Q |
| 4 | 2 | 3 | Anthony Rincón (56.83) Juan García (1:03.77) Valentina Becerra (1:00.13) Karen Durango (57.73) | Colombia | 3:58.46 | Q |
| 5 | 1 | 5 | Maximiliano Vega (57.14) Carlos Kossio (1:04.06) Miriam Guevara Susana Hernández | Mexico | 4:01.13 | Q |
| 6 | 1 | 3 | Agustín Hernández (57.67) Julia Sebastián Federico Ludueña Madgalena Portela (58.61) | Argentina | 4:02.60 | Q |
| 7 | 1 | 7 | Carolina Cermelli (1:06.56) Emily Santos (1:10.30) Jeancarlo Calderón (56.02) Isaac Beitia (51.19) | Panama | 4:04.07 | Q |
| 8 | 2 | 6 | Jesús López (1:00.48) Eric Veit (1:03.59) Lismar Lyon (1:01.68) Fabiana Pesce (58.81) | Venezuela | 4:04.56 | Q |
| 9 | 1 | 1 | Manuel Osorio (57.94) Maximiliano Cereceda (1:04.38) Monstserrat Spielmann (1:01.78) Mahina Valdivia (1:02.15) | Chile | 4:06.25 | R |
| 10 | 1 | 6 | Carlos Cobos (58.99) McKenna DeBever (1:11.26) Alexia Sotomayor (1:02.51) Ricardo Espinosa (53.56) | Peru | 4:10.32 | R |
| 11 | 2 | 1 | Katelyn Cabral (1:09.70) Mark-Anthony Thompson (1:06.46) Emmanuel Gadson (56.14) Ariel Weech (1:00.50) | Bahamas | 4:12.80 | |
| 12 | 2 | 2 | Sidrell Williams (1:05.34) Kito Campbell (1:06.52) Sabrina Lyn (1:04.08) Emily MacDonald (58.51) | Jamaica | 4:14.45 | |
| 13 | 2 | 7 | Miguel Turcios (1:01.92) Nicole Mack Christopher Gossmann Melissa Diego (1:01.46) | Independent Athletes Team | 4:!9.38 | |
| | 2 | 8 | | Uruguay | DNS | |
| | 1 | 2 | | Dominican Republic | DNS | |

### Final

The final was held on October 23.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Helen Noble (59.72) Jacob Foster (1:00.09) Kelly Pash (57.51) Jonathan Kulow (47.39) | United States | 3:44.71 | PR |
| | 5 | Javier Acevedo (54.45) Gabe Mastromatteo (1:00.78) Maggie MacNeil (56.67) Mary-Sophie Harvey (54.30) | Canada | 3:46.20 | |
| | 3 | Guilherme Basseto (55.67) João Gomes Júnior (1:00.47) Clarissa Rodrigues Stephanie Balduccini | Brazil | 3:49.24 | |
| 4 | 6 | Omar Pinzón (55.47) Jorge Murillo (1:00.24) Valentina Becerra (59.28) Sirena Rowe (55.44) | Colombia | 3:50.43 | |
| 5 | 7 | Ulises Saravia (54.87) Macarena Ceballos (1:07.47) Joaquín Piñero (53.90) Lucía Gauna (56.60) | Argentina | 3:52.84 | |
| 6 | 2 | Miranda Grana (1:03.06) Miguel de Lara (1:00.48) Angel Martínez (54.20) Athena Meneses (56.63) | Mexico | 3:54.37 | |
| 7 | 8 | Carla González (1:02.95) Mercedes Toledo (1:09.45) Jorge Otaiza (52.98) Emil Pérez (51.28) | Venezuela | 3:56.66 | |
| 8 | 1 | Carolina Cermelli (1:05.78) Emily Santos (1:09.70) Jeancarlo Calderón (55.62) Isaac Beitia (51.98) | Panama | 4:03.08 | |