| 2023 Cassis Open Provence | |
|---|---|
| Date | 4–10 September |
| Edition | 5th |
| Surface | Hard |
| Location | Cassis, France |
| Champions | |
| Singles | |
 Mattia Bellucci | |
| Doubles | |
 Dan Added / Jonathan Eysseric | |
The 2023 Cassis Open Provence was a professional tennis tournament played on hard courts. It was the fifth edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Cassis, France between 4 and 10 September 2023.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| FRA | Alexandre Müller | 84 | 1 |
 GBR | Liam Broady | 107 | 2 |
| FRA | Benjamin Bonzi | 108 | 3 |
 CZE | Tomáš Macháč | 121 | 4 |
| ITA | Giulio Zeppieri | 136 | 5 |
| FRA | |||
| ITA | Mattia Bellucci | 182 | 7 |
| ITA | Federico Gaio | 215 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Elliot Benchetrit Charles Broom Daniel Cox 
August Holmgren 
Christian Langmo
Ramkumar Ramanathan The following players received entry as lucky losers:
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