The 2006 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts that was part of the Tier II category of the 2006 WTA Tour. The event was relocated to the Porsche-Arena in Stuttgart, Germany after having held all previous editions in Filderstadt. It was the 29th edition of the tournament and was played from 2 October until 8 October 2006. Fourth-seeded Nadia Petrova won the singles title and earned $100,000 first-prize money.[1]