| 2025 Cassis Open Provence | |
|---|---|
| Date | 1–7 September |
| Edition | 7th |
| Surface | Hard |
| Location | Cassis, France |
| 2024 Champions | |
| Singles | |
 Richard Gasquet | |
| Doubles | |
 Jaime Faria / Henrique Rocha | |
The 2025 Cassis Open Provence was a professional tennis tournament played on hard courts. It was the seventh edition of the tournament which was part of the 2025 ATP Challenger Tour. It took place in Cassis, France between 1 and 7 September 2025.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| FRA | Quentin Halys | 70 | 1 |
 EST | Mark Lajal | 147 | 2 |
 GBR | Billy Harris | 151 | 3 |
 AUT | Jurij Rodionov | 154 | 4 |
| FRA | Titouan Droguet | 159 | 5 |
 KAZ | Timofey Skatov | 192 | 6 |
| FRA | Sascha Gueymard Wayenburg | 206 | 7 |
 MON | Valentin Vacherot | 216 | 8 |
The following players received wildcards into the singles main draw:
Étienne Donnet Maé Malige Benoît Paire The following player received entry into the singles main draw through the Next Gen Accelerator programme:
Aryan ShahThe following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
vs. / vs. / 