Swimming at the 2020 Summer Paralympics – Men's 400 metre freestyle S9
# Swimming at the 2020 Summer Paralympics – Men's 400 metre freestyle S9

The Men's 400 metre freestyle S9 event at the 2020 Paralympic Games took place on 25 August 2021, at the Tokyo Aquatics Centre.

## Records

| World Record | Brenden Hall (AUS) | 4:09.93 | Montreal, Canada | 16 August 2013 |
| - | - | - | - | - |
| Paralympic Record | William Martin (AUS) | 4:10.25 | Tokyo, Japan | 25 August 2021 |

## Heats

The swimmers with the top 8 times, regardless of heat, advanced to the final.

| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| - | - | - | - | - | - | - |
| 1 | 2 | 5 | Alexander Tuckfield | Australia | 4:14.26 | Q |
| 2 | 2 | 4 | Ugo Didier | France | 4:15.23 | Q |
| 3 | 1 | 3 | Simone Barlaam | Italy | 4:17.95 | Q |
| 4 | 1 | 6 | William Martin | Australia | 4:17.99 | Q |
| 5 | 1 | 4 | Brenden Hall | Australia | 4:19.30 | Q |
| 6 | 1 | 5 | Jacobo Garrido | Spain | 4:20.28 | Q |
| 7 | 2 | 3 | Federico Morlacchi | Italy | 4:25.33 | Q |
| 8 | 2 | 6 | Igor Hrehorowicz | Poland | 4:26.13 | Q |
| 9 | 2 | 7 | Barry McClements | Ireland | 4:27.11 | |
| 10 | 2 | 2 | David Grachat | Portugal | 4:27.96 | |
| 11 | 1 | 2 | José Antonio Mari | Spain | 4:28.70 | |
| 12 | 2 | 1 | Jesse Reynolds | New Zealand | 4:30.34 | |
| 13 | 1 | 7 | Jonáš Kešnar | Czech Republic | 4:33.76 | |

## Final

400m freestyle final :

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