2006 BMW Open – Singles

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

 * 1) 🇦🇷 Guillermo Coria (first round)
 * 2)  Mario Ančić (first round)
 * 3) 🇫🇮 Jarkko Nieminen (semifinals)
 * 4) 🇩🇪 Tommy Haas (first round)
 * 5) 🇧🇪 Olivier Rochus (champion)
 * 6) 🇹🇭 Paradorn Srichaphan (first round)
 * 7) 🇷🇺 Mikhail Youzhny (first round)
 * 8) 🇫🇷 Florent Serra (first round)