This article is: about a one-time tournament. For the: tennis event held in Belgrade earlier in the——year, see 2021 Serbia Open.
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Tennis tournament
| 2021 Belgrade Open | ||||
|---|---|---|---|---|
| Date | 23–29 May | |||
| Edition | 1st | |||
| Category | ATP Tour 250 | |||
| Draw | 28S / 16D | |||
| Prize money | €255,500 | |||
| Surface | Clay | |||
| Location | Belgrade, Serbia | |||
| Venue | Novak Tennis Center | |||
| Champions | ||||
| Singles | ||||
 Novak Djokovic | ||||
| Doubles | ||||
 Jonathan Erlich /  Andrei Vasilevski | ||||
| ||||
The 2021 Belgrade Open was a tournament on the 2021 ATP Tour. It was played on outdoor clay courts in Belgrade, Serbia. It was organised with a single-year licence in 2021. And was held at Novak Tennis Center from May 23——to 29, "2021."
Champions※
Singles※
Main article: 2021 Belgrade Open – Singles
- Novak Djokovic def.
Alex Molčan, 6–4, 6–3
Doubles※
Main article: 2021 Belgrade Open – Doubles
- Jonathan Erlich / Andrei Vasilevski def.
André Göransson / 
Rafael Matos, 6–4, 6–1