| Event: | Men's 100 metre backstroke S2 |
| Games: | 2020 Summer |
| Venue: | Tokyo Aquatics Centre |
| Dates: | 25 August 2021 |
| Competitors: | 12 |
| Nations: | 9 |
| Gold: | Alberto Abarza |
| Goldnpc: | CHI |
| Silver: | Gabriel Geraldo dos Santos Araujo |
| Silvernpc: | BRA |
| Bronze: | Vladimir Danilenko |
| Bronzenpc: | RPC |
The Men'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 8 times, regardless of heat, advanced to the final.[1]
| Rank | Heat | Lane | Name | Nationality | Time | Notes | ||
|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 5 | 2:02.07 | |||||
| 2 | 1 | 4 | 2:02.28 | |||||
| 3 | 1 | 5 | 2:08.72 | |||||
| 4 | 2 | 4 | 2:09.73 | |||||
| 5 | 2 | 3 | 2:12.80 | |||||
| 6 | 1 | 3 | 2:14.25 | |||||
| 7 | 1 | 6 | 2:17.68 | |||||
| 8 | 2 | 7 | 2:20.41 | |||||
| 9 | 2 | 2 | 2:26.15 | |||||
| 10 | 1 | 2 | 2:29.46 | |||||
| 11 | 1 | 7 | 2:38.70 | |||||
| 12 | 2 | 6 | data-sort-value=9:99.99 |
| Rank | Lane | Name | Nationality | Time | Notes | +100m backstroke final |
|---|---|---|---|---|---|---|
| 5 | 2:00.40 | |||||
| 6 | 2:02.47 | |||||
| 4 | 2:02.74 | |||||
| 4 | 7 | 2:12.53 | ||||
| 5 | 1 | 2:14.54 | ||||
| 6 | 2 | 2:15.09 | ||||
| 7 | 3 | 2:16.71 | ||||
| 8 | 8 | 2:21.95 |