| Event: | Women's 100 metre freestyle S8 |
| Games: | 2016 Summer |
| Venue: | Olympic Aquatics Stadium |
| Dates: | 11 September |
| Competitors: | 14 |
| Nations: | 9 |
| Gold: | Maddison Elliott |
| Goldnpc: | AUS |
| Silvernpc: | AUS |
| Bronze: | Stephanie Millward |
| Bronzenpc: | GBR |
| Prev: | 2012 |
The women's 100 metre freestyle S8 event at the 2016 Paralympic Games took place on 11 September 2016, at the Olympic Aquatics Stadium. Two heats were held, with seven swimmers in each. The swimmers with the eight fastest times advanced to the final, which was won by Australia's Maddison Elliott.
Prior to the competition, the existing World and Paralympic records were as follows:
| World record | 1:04:71 | Glasgow, Great Britain | 2015 | ||
| Paralympic record | 1:04:73 | Rio de Janeiro, Brazil | 2016 |
11:20 11 September 2016
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 1:06.07 | Q | |||
| 2 | 5 | 1:07.45 | Q | |||
| 3 | 2 | 1:10.30 | Q | |||
| 4 | 3 | 1:11.17 | Q | |||
| 5 | 6 | 1:11.90 | ||||
| 6 | 7 | 1:15.80 | ||||
| 6 | 1 | 1:20.65 |
11:23 11 September 2016
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 1:07.69 | Q | |||
| 2 | 5 | 1:08.24 | Q | |||
| 3 | 7 | 1:09.73 | Q | |||
| 4 | 6 | 1:09.92 | Q | |||
| 5 | 2 | 1:14.41 | ||||
| 6 | 1 | 1:15.41 | ||||
| 7 | 8 | 1:20.29 |
19:36 11 September 2016
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 3 | 1:04.73 | PR | ||||
| 5 | 1:05.08 | |||||
| 6 | 1:05.16 | |||||
| 4 | 4 | 1:05.72 | ||||
| 5 | 7 | 1:09.67 | ||||
| 6 | 2 | 1:09.83 | ||||
| 7 | 1 | 1:10.40 | ||||
| 8 | 8 | 1.11.80 |