The 2008 Porsche Tennis Grand Prix was a tennis tournament played on indoor hard courts. It was the 31st edition of the Porsche Tennis Grand Prix, and was part of the Tier II Series of the 2008 WTA Tour. It took place at the Porsche Arena in Stuttgart, Germany, from 27 September through 5 October 2008. Second-seeded Jelena Janković won the singles title.
See main article: 2008 Porsche Tennis Grand Prix – Singles. 
Jelena Janković defeated 
Nadia Petrova 6–4, 6–3
See main article: 2008 Porsche Tennis Grand Prix – Doubles. Anna-Lena Grönefeld / Patty Schnyder defeated 
Květa Peschke / 
Rennae Stubbs 6–2, 6–4