The 1986 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts in Filderstadt, West Germany that was part of the 1986 WTA Tour. It was the ninth edition of the tournament and was held from 13 October through 19 October 1986. First-seeded Martina Navratilova won the singles title.
Finals
Singles
Martina Navratilova defeated Hana Mandlíková 6–2, 6–3
It was Navratilova's 11th singles title of the year and the 122nd of her career.
Doubles
Martina Navratilova / Pam Shriver defeated Zina Garrison / Gabriela Sabatini 7–6(7–5), 6–4