2025 L'Open 35 de Saint-Malo – Singles
| Singles | |
|---|---|
| 2025 L'Open 35 de Saint-Malo | |
| Champion | Naomi Osaka |
| Runner-up | Kaja Juvan |
| Score | 6–1, 7–5 |
| Draw | 32 |
Naomi Osaka won the title, defeating Kaja Juvan 6–1, 7–5 in the final. It was Osaka's first title below the WTA Tour level, first professional title on clay courts, and her first title since winning the 2021 Australian Open. It was her first appearance in a tournament below WTA Tour level since 2015.
Defending champion Loïs Boisson lost in the first round to Léolia Jeanjean.