Swimming at the 2020 Summer Paralympics – Men's 50 metre freestyle S3
# Swimming at the 2020 Summer Paralympics – Men's 50 metre freestyle S3

The men's 50 metre freestyle S3 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 | 3 | Josia Topf | Germany | 46.48 | Q |
| 2 | 1 | 5 | Denys Ostapchenko | Ukraine | 46.73 | Q |
| 3 | 2 | 4 | Diego López Díaz | Mexico | 47.34 | Q |
| 4 | 2 | 5 | Jesús Hernández Hernández | Mexico | 47.43 | Q |
| 5 | 1 | 4 | Zou Liankang | China | 47.49 | Q |
| 6 | 2 | 3 | Serhii Palamarchuk | Ukraine | 48.17 | Q |
| 7 | 2 | 6 | Vincenzo Boni | Italy | 49.78 | Q |
| 8 | 1 | 6 | Miguel Angel Martinez Tajuelo | Spain | 54.09 | Q |
| 9 | 2 | 2 | Grant Patterson | Australia | 54.49 | |
| 10 | 1 | 2 | Charkorn Kaewsri | Thailand | 55.61 | |
| 11 | 1 | 1 | Emmanuele Marigliano | Italy | 58.80 | |
| 12 | 2 | 1 | Yurii Dvorskyi | Ukraine | 59.79 | |
| 13 | 1 | 8 | Ioannis Kostakis | Greece | 1:00.67 | |
| 14 | 1 | 8 | Bruno Becker | Brazil | 1:01.30 | |
| 15 | 2 | 8 | Youssef Elsayed | Egypt | 1:03.46 | |
| | 1 | 7 | Aleksandr Beliaev | RPC | DNS | |

## Final

50m freestyle final :

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