2021 Belgrade Open – Singles
| Singles | |
|---|---|
| 2021 Belgrade Open | |
| Champion | Novak Djokovic |
| Runner-up | Alex Molčan |
| Score | 6–4, 6–3 |
This was the first edition of the tournament, primarily created due to the one-week delay of the 2021 French Open.
Novak Djokovic won the title, defeating Alex Molčan in the final, 6–4, 6–3. It was Djokovic's third title ever in a tournament held in Serbia (excluding the Davis Cup).