| Event: | Women's 100 metre backstroke S2 |
| Games: | 2020 Summer |
| Venue: | Tokyo Aquatics Centre |
| Dates: | 25 August 2021 |
| Competitors: | 9 |
| Nations: | 9 |
| Gold: | Yip Pin Xiu |
| Goldnpc: | SGP |
| Silver: | Miyuki Yamada |
| Silvernpc: | JPN |
| Bronze: | Fabiola Ramirez |
| Bronzenpc: | MEX |
The Women's 100 metre backstroke S2 event at the 2020 Paralympic Games took place on 25 August 2021 at the Tokyo Aquatics Centre.
The swimmers with the top eight times, regardless of heat, advanced to the final.[1]
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 2 | 4 | 2:14.46 | ||||
| 2 | 2 | 5 | 2:32.44 | ||||
| 3 | 1 | 4 | 2:34.35 | ||||
| 4 | 2 | 3 | 2:40.54 | ||||
| 5 | 1 | 3 | 2:40.97 | ||||
| 6 | 1 | 5 | 2:52.80 | ||||
| 7 | 2 | 6 | 3:09.16 | ||||
| 8 | 1 | 6 | 3:16.84 | ||||
| 9 | 2 | 2 | 3:28.25 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | 2:16.61 | |||||
| 3 | 2:26.18 | |||||
| 7 | 2:36.54 | |||||
| 4 | 5 | 2:37.04 | ||||
| 5 | 2 | 2:40.05 | ||||
| 6 | 6 | 2:43.58 | ||||
| 7 | 1 | 3:11.88 | ||||
| 8 | 8 | 3:13.39 |