2006 Allianz Suisse Open Gstaad – Singles

Gastón Gaudio was the defending champion but lost in the quarterfinals to Richard Gasquet.

Richard Gasquet won in the final 7–6(7–4), 6–7(3–7), 6–3, 6–3 against Feliciano López.

Seeds
A champion seed is indicated in bold while text in italics indicates the round in which that seed was eliminated.

• # Ivan Ljubičić (quarterfinals)

• # 🇦🇷 Gastón Gaudio (quarterfinals)

• # 🇪🇸 Fernando Verdasco (quarterfinals)

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

• # 🇪🇸 Carlos Moyá (first round)

• # 🇪🇸 Feliciano López (final)

• # 🇫🇷 Richard Gasquet (champion)

• # 🇧🇾 Max Mirnyi (second round)

Draw

 * NB: The Final was the best of 5 sets while all other rounds were the best of 3 sets.