The 2023 Saint-Tropez Open was a professional tennis tournament played on hard courts.

It was the third edition of the tournament which was part of the 2023 ATP Challenger Tour.

It took place in Saint-Tropez, France between 18 and 24 September 2023.

The following players received wildcards into the singles main draw: The following players received entry into the singles main draw as alternates: The following players received entry from the qualifying draw: The following players received entry as lucky losers: