2023 HPP Open – Singles

Leandro Riedi was the defending champion but lost in the first round to Damir Džumhur.

Corentin Moutet won the title after defeating Sumit Nagal 6–3, 3–6, 6–2 in the final.

Seeds
• # 🇨🇿 Tomáš Macháč (first round, retired)

• # 🇫🇮 Emil Ruusuvuori (quarterfinals, retired)

• # Nuno Borges (second round)

• # 🇫🇷 Alexandre Müller (quarterfinals)

• # 🇪🇸 Jaume Munar (quarterfinals)

• # 🇮🇹 Flavio Cobolli (first round)

• # 🇫🇷 Arthur Rinderknech (semifinals)

• # 🇬🇧 Liam Broady (first round)