2017 Open Sopra Steria de Lyon – Singles

Steve Darcis was the defending champion but chose not to defend his title.

Félix Auger-Aliassime won the title after defeating Mathias Bourgue 6–4, 6–1 in the final.

Seeds
• # 🇦🇷 Horacio Zeballos (quarterfinals)

• # 🇪🇸 Marcel Granollers (first round)

• # Henri Laaksonen (first round)

• # 🇳🇴 Casper Ruud (quarterfinals)

• # 🇫🇷 Paul-Henri Mathieu (quarterfinals)

• # 🇧🇪 Arthur De Greef (second round)

• # 🇰🇷 Lee Duck-hee (first round)

• # 🇧🇷 João Souza (first round)