David Nalbandian was the defending champion but did not participate this year.
Olivier Rochus won the title, defeating Kristof Vliegen 6–4, 6–2 in the all-Belgian final.
Seeds
Guillermo Coria (first round) Mario Ančić (first round) Jarkko Nieminen (semifinals) Tommy Haas (first round) Olivier Rochus (champion) Paradorn Srichaphan (first round) Mikhail Youzhny (first round) Florent Serra (first round)
Draw
Finals
Top half
Bottom half
External links 2006 BMW Open draw 2006 BMW Open Qualifying draw