2025 Monterrey Open – Singles
| Singles | |
|---|---|
| 2025 Monterrey Open | |
| Champion | Diana Shnaider |
| Runner-up | Ekaterina Alexandrova |
| Score | 6–3, 4–6, 6–4 |
| Draw | 28 |
| Seeds | 8 |
Diana Shnaider defeated Ekaterina Alexandrova in the final, 6–3, 4–6, 6–4 to win the singles tennis title at the 2025 Monterrey Open. It was her fifth WTA Tour singles title, and she saved five match points en route, in the quarterfinals against Elise Mertens.
Linda Nosková was the defending champion, but lost in the quarterfinals to Alexandrova.