| Event: | Men's 400 metres T20 |
| Games: | 2023 |
| Venue: | Mario Recordón Athletics Training Center |
| Dates: | November 23 - November 24 |
| Competitors: | 11 |
| Nations: | 8 |
| Win Value: | 46.48 |
| Win Label: | Winning time |
| Gold: | Samuel Oliveira |
| Goldnoc: | BRA |
| Silver: | Jhon Obando |
| Silvernoc: | COL |
| Bronze: | Luis Felipe Rodríguez |
| Bronzenoc: | VEN |
| Prev: | 2019 |
| Next: | 2027 |
The men's T20 400 metres competition of the athletics events at the 2023 Parapan American Games was held on November 23 - 24 at the Mario Recordón Athletics Training Center within 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 | 47.58 | Sao Paulo, Brazil | April 27, 2019 | ||
| Parapan American Games record | 47.58 | Lima, Peru | August 27, 2019 | ||
| Americas record | 47.58 | Sao Paulo, Brazil | April 27, 2019 |
| Date | Time | Round | |
|---|---|---|---|
| November 23, 2023 | 17:29 | Semifinals | |
| November 24, 2023 | 15:30 | Final |
All times shown are in seconds.
| KEY: | bgcolor=ccffcc align=center | q | bgcolor=ccffcc align=center | Q | Qualified | PR | Parapan Games record | NR | National record | SB | Seasonal best | DQ | Disqualified |
The fastest two athletes of each semifinal advance to the final. The results were as follows:[2]
| Rank | Heat | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 2 | 48.46 | Q | ||
| 2 | 2 | 49.14 | Q | ||
| 3 | 2 | 49.17 | Q | ||
| 4 | 1 | 49.47 | Q | ||
| 5 | 2 | 49.55 | q | ||
| 6 | 1 | 49.74 | Q | ||
| 7 | 1 | 49.87 | Q | ||
| 8 | 1 | 50.39 | q | ||
| 9 | 2 | 52.38 | |||
| 10 | 2 | 53.68 | |||
| 11 | 1 | 57.78 | SB | ||
The results were as follows:[3]
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 6 | 46.48 | WR | |||
| 4 | 46.79 | ||||
| 5 | 47.40 | SB | |||
| 4 | 3 | 48.46 | |||
| 5 | 7 | 49.02 | |||
| 6 | 2 | 49.58 | |||
| 7 | 8 | 50.11 | |||
| 8 | 1 | 50.19 | |||