Badminton at the 2020 Summer Paralympics – Mixed doubles SL3–SU5

The mixed doubles SL3–SU5 tournament at the 2020 Summer Paralympics in Tokyo took place between 1 and 5 September 2021 at Yoyogi National Gymnasium.

Seeds
These were the seeds for this event:
 * 1)  (gold medalists)
 * 2) (silver medalists)

Group stage
The draw of the group stage revealed on 26 August 2021. The group stage was played from 1 to 3 September. The top two winners of each group advanced to the knockout rounds.

Finals
The knockout stage was played from 4 to 5 September.