2021 Adelaide International – Singles
| Singles | |
|---|---|
| 2021 Adelaide International | |
| Champion | Iga Świątek |
| Runner-up | Belinda Bencic |
| Score | 6–2, 6–2 |
| Draw | 28 (6 Q / 4 WC ) |
| Seeds | 8 |
Ashleigh Barty was the defending champion, but she lost in the second round to Danielle Collins, in a rematch of the previous year's semifinal.
Iga Świątek won the title, defeating Belinda Bencic in the final, 6–2, 6–2. Świątek did not drop a set throughout the entire tournament.