2023 Open Quimper Bretagne – Singles

Vasek Pospisil was the defending champion but lost in the first round to Gijs Brouwer.

Grégoire Barrère won the title after defeating Arthur Fils 6–1, 6–4 in the final.

Seeds
• # 🇫🇷 Quentin Halys (withdrew)

• # 🇫🇷 Grégoire Barrère (champion)

• # 🇨🇦 Vasek Pospisil (first round)

• # 🇲🇩 Radu Albot (quarterfinals)

• # Dominic Stricker (quarterfinals, retired)

• # 🇦🇹 Dennis Novak (second round)

• # 🇮🇹 Matteo Arnaldi (first round)

• # 🇫🇷 Luca Van Assche (second round)