2006 Hypo Group Tennis International – Singles

Filippo Volandri was the defending champion but chose to compete in the 2006 World Team Cup which was held in the same week. Nikolay Davydenko defeated Andrei Pavel 6–3, 6–0 to win the 2006 Hypo Group Tennis International singles event.

Seeds
• # 🇷🇺 Nikolay Davydenko (champion)

• # 🇦🇺 Lleyton Hewitt (first round)

• # 🇸🇰 Dominik Hrbatý (first round)

• # 🇷🇺 Dmitry Tursunov (first round)

• # 🇦🇷 Juan Ignacio Chela (second round)

• # 🇪🇸 Nicolás Almagro (second round)

• # 🇵🇪 Luis Horna (semifinals, withdrew due to a back injury)

• # 🇫🇷 Gilles Simon (second round)