2008 Allianz Suisse Open Gstaad – Singles

Paul-Henri Mathieu was the defending champion, but lost in the second round to Marin Čilić.

Unseeded Victor Hănescu won in the final 6–3, 6–4, against seventh-seeded Igor Andreev.

Seeds
The top four seeds receive a bye into the second round. • # Stanislas Wawrinka (semifinals)

• # 🇫🇷 Paul-Henri Mathieu (second round)

• # 🇷🇺 Mikhail Youzhny (quarterfinals)

• # Ivo Karlović (second round)

• # 🇮🇹 Andreas Seppi (first round)

• # 🇩🇪 Nicolas Kiefer (second round, withdrew due to a right toe injury)

• # 🇷🇺 Igor Andreev (final)

• # 🇦🇷 Guillermo Cañas (quarterfinals)