Swimming at the 2020 Summer Paralympics – Women's 100 metre backstroke S11
# Swimming at the 2020 Summer Paralympics – Women's 100 metre backstroke S11

The Women's 100 metre backstroke S11 event at the 2020 Paralympic Games took place on 28 August 2021, at the Tokyo Aquatics Centre.

## Final

| Rank | Lane | Name | Nationality | Time | Notes |
| - | - | - | - | - | - |
| | 5 | Cai Liwen | China | 1:13.46 | WR |
| | 4 | Wang Xinyi | China | 1:13.71 | |
| | 3 | Li Guizhi | China | 1:16.98 | |
| 4 | 6 | Anastasiia Shevchenko | RPC | 1:20.00 | |
| 5 | 2 | Sofiia Polikarpova | RPC | 1:21.52 | |
| 6 | 7 | Maryna Piddubna | Ukraine | 1:21.65 | |
| 7 | 1 | Kateryna Tkachuk | Ukraine | 1:21.76 | |
| 8 | 8 | Martina Rabbolini | Italy | 1:24.34 | |
