Athletics at the 2020 Summer Paralympics – Women's 400 metres T13

The women's 400 metres T13 event at the 2020 Summer Paralympics in Tokyo, took place between 2–4 September 2021.

Records
Prior to the competition, the existing records were as follows:

Heats
Heat 1 took place on 2 September 2021, at 21:21:

Heat 2 took place on 2 September 2021, at 21:29:

Heat 3 took place on 2 September 2021, at 21:37:

Final
The final took place on 4 September 2021, at 10:08: