The 1999 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts in Filderstadt, Germany.

that was part of Tier II of the 1999 WTA Tour.

It was the 22nd edition of the tournament and was held from 4 October until 10 October 1999.

First seeded Martina Hingis won the singles title, her third at the event after 1996 and 1997, and earned $80,000 first prize money.

[2][3] The following players received wildcards into the singles main draw: The following players received wildcards into the doubles main draw: The following players received entry from the singles qualifying draw: The following players received entry as lucky losers: The following players received entry from the doubles qualifying draw: Martina Hingis defeated Mary Pierce, 6–4, 6–1 Chanda Rubin / Sandrine Testud defeated Arantxa Sánchez Vicario / Larisa Neiland, 6–3, 6–4