| Event: | Mixed 4 × 400 metres relay |
| Games: | 2023 |
| Venue: | Julio Martínez National Stadium |
| Dates: | October 30 |
| Competitors: | 28 |
| Nations: | 7 |
| Win Value: | 3:16.05 |
| Gold: | Ezequiel Suárez Anabel Medina Robert King Marileidy Paulino |
| Goldnoc: | DOM |
| Silver: | Douglas Mendes Letícia Nonato Lucas Vilar Tiffani Marinho |
| Silvernoc: | BRA |
| Bronze: | Demarius Smith Honour Finley Richard Kuykendoll Jada Griffin |
| Bronzenoc: | USA |
| Prev: | 2019 |
| Next: | 2027 |
The mixed 4 × 400 metres relay competition of the athletics events at the 2023 Pan American Games took place on October 30 at the Julio Martínez National Stadium of Santiago, Chile.[1]
Prior to this competition, the existing world and Pan American Games records were as follows:
| World record | 3:08.80 | Budapest, Hungary | August 19, 2023 | ||
| Pan American Games record | Inaugural event | — | — | — |
All times shown are in seconds.
| KEY: | bgcolor=ccffcc align=center | q | bgcolor=ccffcc align=center | Q | Qualified | NR | National record | PB | Personal best | SB | Seasonal best | DQ | Disqualified |
The results were as follows[2]
| Rank | Lane | Nation | Name | Time | Notes | |
|---|---|---|---|---|---|---|
| 7 | 3:16.05 | |||||
| 8 | 3:18.55 | |||||
| 3 | 3:19.41 | |||||
| 4 | 5 | 3:21.20 | ||||
| 5 | 6 | 3:23.09 | ||||
| 6 | 2 | 3:23.17 | ||||
| 7 | 4 | 3:28.77 |