| Event: | Women's 400 metre freestyle S9 |
| Games: | 2020 Summer |
| Venue: | Tokyo Aquatics Centre |
| Dates: | 25 August 2021 |
| Competitors: | 14 |
| Nations: | 10 |
| Gold: | Lakeisha Patterson |
| Goldnpc: | AUS |
| Silver: | Zsofia Konkoly |
| Silvernpc: | HUN |
| Bronze: | Toni Shaw |
| Bronzenpc: | GBR |
The Women's 400 metre freestyle S9 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 | 1 | 5 | 4:44.74 | ||||
| 2 | 1 | 4 | 4:46.19 | ||||
| 3 | 2 | 5 | 4:48.29 | ||||
| 4 | 2 | 4 | 4:49.91 | ||||
| 5 | 1 | 3 | 4:53.53 | ||||
| 6 | 2 | 3 | 4:54.94 | ||||
| 7 | 1 | 2 | 4:56.51 | ||||
| 8 | 2 | 7 | 4:57.11 | ||||
| 9 | 2 | 2 | 4:57.51 | ||||
| 10 | 1 | 6 | 4:58.40 | ||||
| 11 | 2 | 6 | 5:00.28 | ||||
| 12 | 1 | 7 | 5:00.92 | ||||
| 13 | 2 | 1 | 5:11.19 | ||||
| 14 | 1 | 1 | 5:23.14 |
| Rank | Lane | Name | Nationality | Time | Notes | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 4:36.68 | +400m freestyle final | 4 | 4:36.76 | ||||||||
| 5 | 4:39.32 | |||||||||||
| 4 | 3 | 4:43.98 | ||||||||||
| 5 | 7 | Xu Jialing | 4:51.00 | |||||||||
| 6 | 2 | 4:52.64 | ||||||||||
| 7 | 8 | Summer Schmit | 4:56.92 | |||||||||
| 8 | 1 | 4:58.55 |