2021 Kremlin Cup – Women's singles
| Women's singles | |
|---|---|
| 2021 Kremlin Cup | |
| Champion | Anett Kontaveit |
| Runner-up | Ekaterina Alexandrova |
| Score | 4–6, 6–4, 7–5 |
| Draw | 28 |
| Seeds | 8 |
Belinda Bencic was the defending champion, having won the previous edition in 2019, but she withdrew before the tournament began.
Anett Kontaveit won the title, defeating Ekaterina Alexandrova in the final, 4–6, 6–4, 7–5.