| 2021 Sofia Open | |
|---|---|
| Date | 27 September – 3 October |
| Edition | 6th |
| Category | ATP World Tour 250 series |
| Draw | 28S / 16D |
| Prize money | €419,470 |
| Surface | Hard (indoor) |
| Location | Sofia, Bulgaria |
| Venue | Arena Armeec |
| Champions | |
| Singles | |
 Jannik Sinner[1] | |
| Doubles | |
 Jonny O'Mara / Ken Skupski[2] | |
The 2021 Sofia Open was a men's tennis tournament played on indoor hard courts. It was the sixth edition of the Sofia Open as part of the ATP World Tour 250 series of the 2021 ATP Tour. It was played at the Arena Armeec in Sofia, Bulgaria, from 27 September to 3 October 2021. First-seeded Jannik Sinner won the singles title.[3]
- ^ "2021 Sofia – Singles draw". Association of Tennis Professionals (ATP).
- ^ "2021 Sofia – Doubles draw". Association of Tennis Professionals (ATP).
- ^ "Sofia Open Overview". atpworldtour.com.