| Event: | Women's 400 metres hurdles |
| Games: | 2015 |
| Venue: | CIBC Pan Am and Parapan Am Athletics Stadium |
| Dates: | July 21–22 |
| Competitors: | 16 |
| Nations: | 12 |
| Win Value: | 55.50 |
| Win Label: | Winning time |
| Gold: | Shamier Little |
| Goldnoc: | USA |
| Silver: | Sarah Wells |
| Silvernoc: | CAN |
| Bronze: | Déborah Rodríguez |
| Bronzenoc: | URU |
| Prev: | 2011 |
| Next: | 2019 |
The women's 400 metres hurdles sprint competition of the athletics events at the 2015 Pan American Games will take place between July 21 and July 22 at the CIBC Pan Am and Parapan Am Athletics Stadium.[1] The defending Pan American Games champion is Princesa Oliveros of Colombia.
Prior to this competition, the existing world and Pan American Games records were as follows:
| World record | 52.34 | Tula, Russia | August 8, 2003 | ||
| Pan American Games record | 53.44 | Winnipeg, Canada | July 28, 1999 |
See main article: article and Athletics at the 2015 Pan American Games – Qualification. Each National Olympic Committee (NOC) was able to enter up to two entrants providing they had met the minimum standard (59.56) in the qualifying period (January 1, 2014 to June 28, 2015).[2]
| Date | Time | Round | |
|---|---|---|---|
| July 21, 2015 | 12:05 | Semifinals | |
| July 22, 2015 | 19:15 | Final |
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 |
| Rank | Heat | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 2 | 56.08 | Q | |||
| 2 | 1 | 56.56 | Q, SB | |||
| 3 | 2 | 56.77 | Q | |||
| 4 | 2 | 56.82 | Q, SB | |||
| 5 | 2 | 56.86 | q | |||
| 6 | 2 | 57.58 | q, SB | |||
| 7 | 1 | 57.64 | Q, SB | |||
| 8 | 1 | 57.76 | Q, SB | |||
| 9 | 2 | 58.30 | ||||
| 10 | 1 | 58.36 | ||||
| 11 | 1 | 58.62 | ||||
| 12 | 1 | 58.72 | ||||
| 13 | 1 | 58.95 | ||||
| 14 | 2 | |||||
| 15 | 2 | |||||
| 1 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | Shamier Little | 55.50 | ||||
| 3 | Sarah Wells | 56.17 | ||||
| 2 | Déborah Rodríguez | 56.41 | ||||
| 4 | 8 | Zurian Hechavarria | 56.72 | SB | ||
| 5 | 5 | Sparkle McKnight | 57.30 | |||
| 6 | 6 | Zudikey Rodríguez | 57.65 | |||
| 7 | 7 | Sharolyn Scott | 58.65 | |||
| 8 | 1 | Jessica Gelibert |