2025 Hangzhou Open – Singles
| Singles | |
|---|---|
| 2025 Hangzhou Open | |
| Champion | Alexander Bublik |
| Runner-up | Valentin Royer |
| Score | 7–6(7–4), 7–6(7–4) |
| Draw | 28 (4 Q / 3 WC ) |
| Seeds | 8 |
Alexander Bublik defeated Valentin Royer in the final, 7–6(7–4), 7–6(7–4) to win the singles tennis title at the 2025 Hangzhou Open. It was his eighth ATP Tour title. Bublik was the second player in the 2025 season to win a title without dropping serve during the tournament, after Taylor Fritz at the Stuttgart Open.
Marin Čilić was the defending champion, but lost in the first round to Nishesh Basavareddy.