| Event: | Men's 100 metre freestyle S5 |
| Games: | 2008 Summer |
| Venue: | Beijing National Aquatics Center |
| Dates: | September 7 |
| Competitors: | 9 |
| Nations: | 7 |
| Gold: | Daniel Dias |
| Silver: | Dmytro Kryzhanovskyy |
| Bronze: | Roy Perkins |
| Silvernpc: | UKR |
| Goldnpc: | BRA |
| Bronzenpc: | USA |
The men's 100 metre freestyle S5 event at the 2008 Paralympic Games took place on September 7, at the Beijing National Aquatics Center.
Two heats were held, with four swimmers in the first heat and five swimmers in the second heat. The swimmers with the eight fastest times advanced to the final; there, they all competed in a single final heat to earn final placements.
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 3 | Roy Perkins | 1:17.86 | Q | ||
| 2 | 4 | Sebastián Rodríguez | 1:18.44 | Q | ||
| 3 | 5 | Anthony Stephens | 1:19.10 | Q | ||
| 4 | 6 | Takayuki Suzuki | 1:25.51 | Q |
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 4 | Daniel Dias | 1:14.14 | Q | |
| 2 | 5 | Dmytro Kryzhanovskyy | 1:14.45 | Q | |
| 3 | 3 | Clodoaldo Silva | 1:18.81 | Q | |
| 4 | 6 | Jordi Gordillo | 1:25.91 | Q | |
| 5 | 2 | Moises Fuentes | 1:30.90 | ||
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | 1:11.05 | |||||
| 5 | 1:12.73 | |||||
| 3 | 1:15.31 | |||||
| 4 | 7 | 1:16.07 | ||||
| 5 | 6 | 1:16.15 | ||||
| 6 | 2 | 1:21.14 | ||||
| 7 | 1 | 1:25.29 | ||||
| 8 | 8 | 1:25.94 |