2021 Kremlin Cup – Women's singles

Women's singles
2021 Kremlin Cup
Champion Anett Kontaveit
Runner-up Ekaterina Alexandrova
Score4–6, 6–4, 7–5
Draw28
Seeds8

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.