1989 Porsche Tennis Grand Prix

The 1989 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor carpet courts at the Filderstadt Tennis Centre in Filderstadt, West Germany and was part of the Category 4 tier of the 1989 WTA Tour. It was the 12th edition of the tournament and was held from 9 October to 15 October 1989. First-seeded Gabriela Sabatini won the singles title.

Singles
🇦🇷 Gabriela Sabatini defeated 🇺🇸 Mary Joe Fernández 7–6(7–5), 6–4
 * It was Sabatini's 4th singles title of the year and the 13th of her career.

Doubles
🇺🇸 Gigi Fernández / 🇺🇸 Robin White defeated 🇮🇹 Raffaella Reggi / Elna Reinach 6–4, 7–6(7–2)