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| 2021 Serbia Open | |
|---|---|
| Date | 19–25 April (men) 17–23 May (women) |
| Edition | 5th (men) 1st (women) |
| Category | ATP Tour 250 (men) WTA 250 (women) |
| Draw | 28S / 16D (men) 32S / 16D (women) |
| Prize money | €711,800 (men) $235,238 (women) |
| Surface | Clay |
| Location | Belgrade, Serbia |
| Venue | Novak Tennis Center |
| Champions | |
| Men's singles | |
 Matteo Berrettini | |
| Women's singles | |
 Paula Badosa | |
| Men's doubles | |
 Ivan Sabanov / Matej Sabanov | |
| Women's doubles | |
 Aleksandra Krunić / Nina Stojanović | |
The 2021 Serbia Open was a tennis tournament played on outdoor clay courts. It was the 5th and 1st edition of the event for male and female professional tennis players, respectively. It was part of the 2021 ATP Tour and the 2021 WTA Tour and took place in Belgrade, Serbia; in mid-April for men and mid-May for women.[1][2] A second ATP tournament, called the Belgrade Open, was played in men's singles the week before the French Open.