2017 Open Harmonie mutuelle – Singles

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

Egor Gerasimov won the title after defeating Tobias Kamke 7–6(7–3), 7–6(7–5) in the final.

Seeds
• # 🇦🇹 Gerald Melzer (first round)

• # 🇺🇦 Sergiy Stakhovsky (quarterfinals)

• # 🇸🇰 Norbert Gombos (first round)

• # 🇸🇰 Lukáš Lacko (quarterfinals)

• # 🇫🇷 Quentin Halys (first round)

• # 🇫🇷 Kenny de Schepper (second round)

• # 🇪🇸 Rubén Ramírez Hidalgo (second round)

• # 🇩🇪 Tobias Kamke (final)