| 2021 Kremlin Cup | |
|---|---|
| Date | 18–24 October |
| Edition | 31st (men) / 25th (women) |
| Category | ATP 250 (men) WTA 500 (women) |
| Prize money | ATP $697,125 WTA $565,530 |
| Surface | Hard (indoor) |
| Location | Moscow, Russia |
| Venue | Irina Viner-Usmanova Gymnastics Palace Luzhniki Palace of Sports |
| Champions | |
| Men's singles | |
 Aslan Karatsev | |
| Women's singles | |
 Anett Kontaveit | |
| Men's doubles | |
 Harri Heliövaara /  Matwé Middelkoop | |
| Women's doubles | |
 Jeļena Ostapenko /  Kateřina Siniaková | |
The 2021 Kremlin Cup (also known as the 2021 VTB Kremlin Cup for sponsorship reasons) was a professional tennis tournament played on indoor hard courts. It was the 31st edition of the Kremlin Cup for the men and the 25th edition for the women. The tournament was part of the ATP 250 series of the 2021 ATP Tour,[1] and of the WTA 500 series of the 2021 WTA Tour.[2] It was held at the Irina Viner-Usmanova Gymnastics Palace and the Luzhniki Palace of Sports in Moscow, Russia, from 18 October through 24 October 2021.[3]
- ^ "ATP Kremlin Cup Overview". atptour.com.
- ^ "VTB Kremlin Cup Overview". wtatennis.com.
- ^ The VTB Kremlin Cup 2021 will be held in one week!