| Event: | Men's 100 metre freestyle S4 |
| Games: | 2008 Summer |
| Venue: | Beijing National Aquatics Center |
| Dates: | September 7 |
| Competitors: | 9 |
| Nations: | 9 |
| Gold: | David Smetanine |
| Silver: | Richard Oribe |
| Bronze: | Jan Povysil |
| Silvernpc: | ESP |
| Goldnpc: | FRA |
| Bronzenpc: | CZE |
The men's 100 metre freestyle S4 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 | 4 | Richard Oribe | 1:26.96 | Q | ||
| 2 | 3 | Ivan Khmelnitskiy | 1:32.66 | Q | ||
| 3 | 5 | Luca Mazzone | 1:37.23 | Q | ||
| 4 | 6 | Stylianos Tsakonas | 1:40.63 |
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 4 | David Smetanine | 1:23.87 | Q | |
| 2 | 5 | Jan Povysil | 1:25.72 | Q | |
| 3 | 2 | Christoffer Lindhe | 1:32.98 | Q | |
| 4 | 6 | Juan Reyes | 1:36.25 | Q | |
| 5 | 3 | Joe McCarthy | 1:40.19 | Q | |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | 1:24.67 | |||||
| 3 | 1:26.62 | |||||
| 5 | 1:26.75 | |||||
| 4 | 6 | 1:30.92 | ||||
| 5 | 1 | 1:31.21 | ||||
| 6 | 2 | 1:33.37 | ||||
| 7 | 8 | 1:34.37 | ||||
| 8 | 7 | 1:37.30 |