Swimming at the 2020 Summer Paralympics – Men's 400 metre freestyle S8
# Swimming at the 2020 Summer Paralympics – Men's 400 metre freestyle S8

The men's 400 metre freestyle S8 event at the 2020 Paralympic Games took place on 31 August 2021, at the Tokyo Aquatics Centre.

## Heats

The swimmers with the top eight times, regardless of heat, advanced to the final.

| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| - | - | - | - | - | - | - |
| 1 | 1 | 4 | Matthew Torres | United States | 4:31.77 | Q |
| 2 | 2 | 5 | Andrei Nikolaev | RPC | 4:31.88 | Q |
| 3 | 2 | 3 | Robert Griswold | United States | 4:34.35 | Q |
| 4 | 2 | 4 | Xu Haijiao | China | 4:34.47 | Q |
| 5 | 2 | 6 | Caio Amorim | Brazil | 4:38.44 | Q |
| 6 | 1 | 5 | Alberto Amodeo | Italy | 4:39.52 | Q |
| 7 | 1 | 6 | Iñigo Llopis Sanz | Spain | 4:44.19 | Q |
| 8 | 1 | 3 | Ben Popham | Australia | 4:45.05 | Q |
| 9 | 2 | 2 | Zach Zona | Canada | 4:49.09 | |

## Final

400m freestyle final :

| Rank | Lane | Name | Nationality | Time | Notes |
| - | - | - | - | - | - |
