| 2021 Belgrade Challenger | |
|---|---|
| Date | 12–18 April (men) 26–31 July (women) |
| Edition | 9th (men) 1st (women) |
| Prize money | $115,000 |
| Surface | Clay |
| Location | Belgrade, Serbia |
| Venue | Novak Tennis Center |
| Champions | |
| Men's singles | |
 Roberto Carballés Baena | |
| Women's singles | |
 Anna Karolína Schmiedlová | |
| Men's doubles | |
 Guillermo Durán / Andrés Molteni | |
| Women's doubles | |
 Olga Govortsova / Lidziya Marozava | |
The 2021 Belgrade Challenger was a professional tennis tournament played on clay courts. It was the ninth edition of the tournament which was part of the 2021 ATP Challenger Tour.[1] It took place in Belgrade, Serbia between 12 and 18 April 2021.
For the first time, a women's tournament was also held between 26 and 31 July, categorized as a WTA 125[2] event at the same venue, which was part of 2021 WTA 125K series.
- ^ "Serbia Challenger Open Overview". atptour.com.
- ^ "Belgrade Ladies Open Overview". Women's Tennis Association. Retrieved 2021-07-03.