Swimming at the 2016 Summer Paralympics – Men's 100 metre backstroke S11
The Men's 100 metre backstroke S11 event at the 2016 Paralympic Games took place on 9 September 2016, at the Olympic Aquatics Stadium. Two heats were held. The swimmers with the eight fastest times advanced to the final.Heats
10:23 9 September 2016:
| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | | | 1:09.40 | ' |
| 2 | 2 | | | 1:10.44 | ' |
| 3 | 5 | | | 1:11.36 | ' |
| 4 | 3 | | | 1:11.64 | ' |
| 5 | 6 | | | 1:14.44 | |
| 6 | 7 | | | 1:17.75 | |
Heat 2
10:28 9 September 2016:
| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 3 | | | 1:09.79 | ' |
| 2 | 5 | | | 1:10.40 | ' |
| 3 | 4 | | | 1:10.84 | ' |
| 4 | 6 | | | 1:13.69 | ' |
| 5 | 7 | | | 1:14.39 | |
| 6 | 2 | | | 1:14.75 | |
| 7 | 1 | | | 1:25.29 | |
Final
19:11 9 September 2016:
| Rank | Lane | Name | Nationality | Time | Notes |
| 2 | | | 1:06.66 | |
| 4 | | | 1:08.28 | |
| 6 | | | 1:08.28 | |
| 4 | 7 | | | 1:08.55 | |
| 5 | 5 | | | 1:09.11 | |
| 6 | 3 | | | 1:09.89 | |
| 7 | 1 | | | 1:12.20 | |
| 8 | 8 | | | 1:15.85 | |
