2015 Swiss Open Gstaad – Singles

Pablo Andújar was the defending champion, but lost to Thomaz Bellucci in the quarterfinals.

Dominic Thiem won the title, defeating David Goffin in the final, 7–5, 6–2.

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

• #🇪🇸 Feliciano López (semifinals)

• #🇦🇹 Dominic Thiem (champion)

• #🇪🇸 Pablo Andújar (quarterfinals)

• #🇧🇷 Thomaz Bellucci (semifinals)

• # João Sousa (quarterfinals)

• #🇪🇸 Pablo Carreño Busta (quarterfinals)

• #🇨🇴 Santiago Giraldo (quarterfinals)

Seeds
• # 🇦🇷 Facundo Bagnis (first round)

• # 🇦🇷 Horacio Zeballos (qualified)

• # 🇫🇷 Kenny de Schepper (qualifying competition)

• # 🇦🇹 Gerald Melzer (second round)

• # 🇮🇹 Andrea Arnaboldi (qualifying competition)

• # 🇷🇸 Laslo Djere (second round)

• # 🇪🇨 Giovanni Lapentti (first round)

• # 🇮🇹 Matteo Viola (first round)

Qualifiers
• # 🇫🇷 Maxime Teixeira

• # 🇦🇷 Horacio Zeballos

• # 🇩🇪 Julian Reister

• # 🇫🇷 Calvin Hemery