2023 Internationaux de Tennis de Blois – Singles

Alexandre Müller was the defending champion but chose not to defend his title.

Quentin Halys won the title after Kyrian Jacquet retired in the final. Halys led 4–6, 6–2, 2–0 at the time of retirement.

Seeds
• # 🇫🇷 Quentin Halys (champion)

• # 🇪🇸 Pedro Martínez (second round)

• # 🇰🇿 Timofey Skatov (first round)

• # 🇧🇷 Felipe Meligeni Alves (withdrew)

• # 🇧🇪 Kimmer Coppejans (second round)

• # 🇫🇷 Harold Mayot (quarterfinals)

• # 🇸🇪 Dragoș Nicolae Mădăraș (first round)

• # Evgeny Donskoy (first round)