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.
| 2008 Porsche Tennis Grand Prix | |
|---|---|
| Date | 27 September – 5 October |
| Edition | 31st |
| Category | Tier II Series |
| Surface | Hard / indoor |
| Location | Stuttgart, Germany |
| Venue | Porsche Arena |
| Champions | |
| Singles | |
 Jelena Janković | |
| Doubles | |
 Anna-Lena Grönefeld /  Patty Schnyder | |
Finals
editSingles
edit Jelena Janković defeated 
Nadia Petrova 6–4, 6–3
- It was Janković's 2nd singles title of the year, and her 8th overall.
Doubles
edit Anna-Lena Grönefeld / Patty Schnyder defeated 
Květa Peschke / 
Rennae Stubbs 6–2, 6–4