2021 Belgrade Open – Singles

Singles
2021 Belgrade Open
Champion Novak Djokovic
Runner-up Alex Molčan
Score6–4, 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).