2023 Saint-Tropez Open – Singles

Mattia Bellucci was the defending champion but lost in the first round to Emilio Nava.

Constant Lestienne won the title after defeating Liam Broady 4–6, 6–3, 6–4 in the final.

Seeds
• # 🇫🇷 Ugo Humbert (withdrew)

• # 🇦🇹 Sebastian Ofner (quarterfinals, retired)

• # 🇫🇷 Grégoire Barrère (second round)

• # 🇫🇷 Richard Gasquet (first round)

• # 🇺🇸 Michael Mmoh (semifinals, retired)

• # 🇫🇷 Hugo Gaston (first round)

• # 🇧🇪 David Goffin (withdrew)

• # 🇫🇷 Benjamin Bonzi (withdrew)

• # 🇬🇧 Liam Broady (final)