Swimming at the 2020 Summer Paralympics – Men's 400 metre freestyle S6
# Swimming at the 2020 Summer Paralympics – Men's 400 metre freestyle S6

The men's 400 metre freestyle S6 event at the 2020 Paralympic Games took place on 2 September 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 | Talisson Glock | Brazil | 5:06.28 | Q |
| 2 | 1 | 3 | Viacheslav Lenskii | RPC | 5:11.07 | Q |
| 3 | 2 | 4 | Antonio Fantin | Italy | 5:12.08 | Q |
| 4 | 2 | 5 | Juan Gutierrez Bermudez | Mexico | 5:14.10 | Q |
| 5 | 1 | 5 | Andrei Granichka | RPC | 5:15.38 | Q |
| 6 | 2 | 3 | Raul Gutierrez Bermudez | Mexico | 5:26.10 | Q |
| 7 | 1 | 6 | Lorenzo Perez Escalona | Cuba | 5:26.57 | Q |
| 8 | 2 | 6 | Daniel Videira | Portugal | 5:26.88 | Q |
| 9 | 2 | 7 | Zach Shattuck | United States | 5:29.95 | |
| 10 | 2 | 2 | Nelson Crispín | Colombia | 5:36.25 | |
| 11 | 1 | 2 | Leo McCrea | Switzerland | 5:40.08 | |
| 12 | 2 | 1 | Patrick Flanagan | Ireland | 5:40.48 | |
| 13 | 1 | 7 | Gary Bejino | Philippines | 5:52.28 | |

## Final

400m freestyle final :

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