| Event: | Men's 100 metre butterfly S8 |
| Games: | 2012 Summer |
| Venue: | London Aquatics Centre |
| Dates: | 30 August 2012 |
| Competitors: | 19 |
| Nations: | 11 |
| Gold: | Charles Rozoy |
| Goldnpc: | FRA |
| Silver: | Yanpeng Wei |
| Silvernpc: | CHN |
| Bronze: | Maodang Song |
| Bronzenpc: | CHN |
The men's 100 metre butterfly S8 event at the 2012 Paralympic Games took place on 30 August, at the London Aquatics Centre.
Three heats were held, two with six swimmers each and one with seven swimmers. The swimmers with the eight fastest times advanced to the final.
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 4 | Jiachao Wang | 1:03.94 | ||
| 2 | 3 | Evgeny Zimin | 1:05.82 | ||
| 3 | 5 | Sean Fraser | 1:05.94 | ||
| 4 | 7 | Sharath Gayakwad | 1:07.12 | ||
| 5 | 6 | Niels Korfitz Mortensen | 1:08.75 | ||
| 6 | 2 | Rudy Garcia-Tolson | 1:09.94 | ||
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 5 | Maodang Song | 1:02.77 | ||
| 2 | 4 | Yanpeng Wei | 1:02.93 | ||
| 3 | 2 | Michele Ferrarin | 1:07.26 | ||
| 4 | 3 | Ferenc Csuri | 1:07.41 | ||
| 5 | 6 | Evan Ryan Austin | 1:08.61 | ||
| 6 | 7 | Alejandro Sanchez Palomero | 1:12.72 | ||
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 4 | Charles Rozoy | 1:01.18 EU | ||
| 2 | 5 | Denis Tarasov | 1:05.22 | ||
| 3 | 3 | Jaime Bailon Galindo | 1:06.54 | ||
| 4 | 6 | Oliver Hynd | 1:07.62 | ||
| 5 | 2 | Luis Armando Andrade Guillen | 1:08.06 | ||
| 6 | 7 | Andreas Onea | 1:09.43 | ||
| 1 | Mikkel Asmussen | Did not start | |||
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | Charles Rozoy | 1:01.24 | ||||
| 3 | Yanpeng Wei | 1:01.66 | ||||
| 5 | Maodang Song | 1:01.99 | ||||
| 4 | 6 | Jiachao Wang | 1:02.00 | |||
| 5 | 2 | Denis Tarasov | 1:02.05 | |||
| 6 | 1 | Sean Fraser | 1:05.99 | |||
| 7 | 7 | Evgeny Zimin | 1:06.34 | |||
| 8 | 8 | Jaime Bailon Galindo | 1:06.35 |