| Event: | Men's 50 metre breaststroke SB2 |
| Games: | 2012 Summer |
| Venue: | London Aquatics Centre |
| Dates: | 30 August |
| Competitors: | 13 |
| Nations: | 11 |
| Gold: | Jianping Du |
| Goldnpc: | CHN |
| Silver: | Arnulfo Castorena |
| Silvernpc: | MEX |
| Bronze: | Dmytro Vynohradets |
| Bronzenpc: | UKR |
The men's 50 metre breaststroke SB2 event at the 2012 Paralympic Games took place on 30 August, at the London Aquatics Centre.
Two heats were held, one with six swimmers and one with seven swimmers. The swimmers with the eight fastest times advanced to the final.
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 4 | Arnulfo Castorena | 59.01 | Q | |
| 2 | 5 | Dmytro Vynohradets | 59.56 EU | Q | |
| 3 | 3 | Cristopher Tronco | 1:00.12 | Q | |
| 4 | 6 | Grant Patterson | 1:05.86 | Q | |
| 5 | 7 | Hanhua Li | 1:07.82 | ||
| 6 | 7 | Charkorn Kaewsri | 1:08.49 | ||
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 4 | Jianping Du | 57.83 AS | Q | |
| 2 | 6 | Andrey Meshcheryakov | 1:00.11 | Q | |
| 3 | 3 | Michael Demarco | 1:02.39 | Q | |
| 4 | 5 | Somchai Doungkaew | 1:02.72 | Q | |
| 5 | 2 | Ioannis Kostakis | 1:05.94 | ||
| 6 | 7 | Byeong-Eon Min | 1:10.22 | ||
| 7 | 1 | Mark Chirino | 1:18.66 | ||
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | Du Jianping | 57.50 | AS | |||
| 5 | Arnulfo Castorena | 58.23 | ||||
| 3 | Dmytro Vynohradets | 58.51 | EU | |||
| 4 | 2 | Cristopher Tronco | 01:01.12 | |||
| 5 | 7 | Michael Demarco | 1:01.50 | |||
| 6 | 1 | Somchai Doungkaew | 1:01.84 | |||
| 7 | 6 | Andrey Meshcheryakov | 1:02.31 | |||
| 8 | 8 | Grant Patterson | 1:07.52 |