2017 Swiss Open Gstaad – Singles

Feliciano López was the defending champion, but lost in the second round to Yannick Hanfmann.

Fabio Fognini won the title, defeating Hanfmann in the final, 6–4, 7–5.

Seeds
The top four seeds receive a bye into the second round. • #🇧🇪 David Goffin (quarterfinals)

• #🇪🇸 Roberto Bautista Agut (semifinals)

• #🇪🇸 Feliciano López (second round)

• #🇮🇹 Fabio Fognini (champion)

• #🇮🇹 Paolo Lorenzi (second round)

• # Robin Haase (semifinals)

• #🇷🇸 Dušan Lajović (first round)

• # João Sousa (quarterfinals)

Seeds
• # 🇧🇪 Arthur De Greef (first round)

• # 🇧🇷 João Souza (qualifying competition)

• # 🇪🇸 Adrián Menéndez Maceiras (first round)

• # 🇩🇪 Yannick Hanfmann (qualified)

• # 🇭🇺 Attila Balázs (first round)

• # 🇮🇹 Stefano Napolitano (qualifying competition)

• # 🇮🇹 Lorenzo Giustino (qualified)

• # 🇫🇷 Gleb Sakharov (qualified)

Qualifiers
• # 🇫🇷 Gleb Sakharov

• # 🇮🇹 Lorenzo Giustino

• # 🇩🇪 Daniel Brands

• # 🇩🇪 Yannick Hanfmann