2021 J&T Banka Ostrava Open – Singles
| Singles | |
|---|---|
| 2021 J&T Banka Ostrava Open | |
| Champion | Anett Kontaveit |
| Runner-up | Maria Sakkari |
| Score | 6–2, 7–5 |
| Draw | 28 |
| Seeds | 8 |
Aryna Sabalenka was the defending champion, but she chose not to compete this year.
Anett Kontaveit won her maiden WTA 500 title without dropping a set, defeating Maria Sakkari in the final, 6–2, 7–5.