Swimming at the 2012 Summer Paralympics – Men's 50 metre freestyle S4 Heats Heat 1

| Rank_ | Lane | Name_ | Nationality | Time_ | Notes_ |
|---|---|---|---|---|---|
| 1 | 5 | Eskender Mustafaiev | Ukraine | 38.77 | Q |
| 2 | 4 | David Smetanine | France | 38.97 | Q |
| 3 | 3 | Kyunghyun Kim | South Korea | 40.37 | Q |
| 4 | 6 | Christoffer Lindhe | Sweden | 41.52 | Q |
| 5 | 7 | Arnost Petracek | Czech Republic | 43.12 |  |
| 6 | 2 | Ronystony Cordeiro da Silva | Brazil | 44.22 |  |
| 7 | 8 | Grant Patterson | Australia | 55.49 |  |
| 8 | 1 | Arnulfo Castorena | Mexico | 1:03.49 |  |