The 1979 Porsche Tennis Grand Prix was a women's singles tennis tournament played on indoor carpet courts at the Tennis Sporthalle Filderstadt in Filderstadt in West Germany. The event was part of the AAA[a] category of the 1979 Colgate Series. It was the second edition of the tournament and was held from 5 November through 11 November 1979.[2] Third-seeded Tracy Austin won the singles event, successfully defending her 1978 title, after defeating world No. 1 Martina Navratilova in the final. Austin was entitled to $20,000 first-prize money but elected to receive a Porsche 924 instead.[2][1]