| 2021 Transylvania Open | |
|---|---|
| Date | 25–31 October |
| Edition | 1st |
| Category | WTA 250 |
| Draw | 32S / 16Q / 16D |
| Prize money | $235,238 |
| Surface | Hard (Indoor) |
| Location | Cluj-Napoca, Romania |
| Venue | BT Arena |
| Champions | |
| Singles | |
 Anett Kontaveit | |
| Doubles | |
 Irina Bara /  Ekaterine Gorgodze | |
The 2021 Transylvania Open was a women's tennis tournament played on indoor hard courts.[1] It was the first edition of the Transylvania Open, and part of the WTA 250 series of the 2021 WTA Tour. It was held at the BT Arena in Cluj-Napoca, Romania, from 25 October until 31 October 2021. Second-seeded Anett Kontaveit won the singles title. By winning the title, Kontaveit qualified for the WTA Finals.[2]