| Event: | Men's 100 metre butterfly S9 |
| Games: | 2012 Summer |
| Venue: | London Aquatics Centre |
| Dates: | 30 August |
| Competitors: | 16 |
| Nations: | 9 |
| Gold: | Tamás Sors |
| Goldnpc: | HUN |
| Silver: | Matthew Cowdrey |
| Silvernpc: | AUS |
| Bronze: | Federico Morlacchi |
| Bronzenpc: | ITA |
The men's 100 metre butterfly S9 event at the 2012 Paralympic Games took place on 30 August, at the London Aquatics Centre.
Two heats were held with eight swimmers in each. The swimmers with the eight fastest times advanced to the final.
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | Federico Morlacchi | 01:01.68 | Q | ||
| 2 | 2 | Tamás Tóth | 01:02.44 | Q | ||
| 3 | 3 | Andriy Sirovatchenko | 01:02.60 | Q | ||
| 4 | 5 | Kristijan Vincetic | 01:03.25 | |||
| 5 | 6 | Csaba Meilinger | 01:03.65 | |||
| 6 | 1 | Michael Auprince | 01:05.33 | |||
| 7 | 8 | Martin Schulz | 01:06.54 | |||
| 8 | 7 | Iurii Martynov | 01:08.81 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | Tamás Sors | 00:59.94 | Q | ||
| 2 | 3 | Jose Antonio Mari Alcaraz | 01:01.65 | Q | ||
| 3 | 6 | Brendan Hall | 01:01.82 | Q | ||
| 4 | 5 | Matthew Cowdrey | 01:02.31 | Q | ||
| 5 | 2 | Jesus Collado | 01:02.57 | Q | ||
| 6 | 1 | Eduard Samarin | 01:03.17 | |||
| 7 | 7 | Cory Bureau | 01:03.66 | |||
| 8 | 8 | Michael Prout | 01:05.22 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | Tamás Sors | 00:59.54 | ||||
| 2 | Matthew Cowdrey | 00:59.91 | ||||
| 3 | Federico Morlacchi | 01:00.77 | ||||
| 4 | 5 | Jose Antonio Mari Alcaraz | 01:00.98 | |||
| 5 | 1 | Jesus Collado | 01:01.28 | |||
| 6 | 6 | Brendan Hall | 01:01.31 | |||
| 7 | 7 | Tamás Tóth | 01:01.37 | |||
| 8 | 8 | Andriy Sirovatchenko | 01:03.63 |