The 2009 Porsche Tennis Grand Prix was a women's tennis tournament, for the first time played on indoor clay courts. It was the 32nd edition of the Porsche Tennis Grand Prix, and was part of the Premier tournaments of the 2009 WTA Tour. It took place at the Porsche Arena in Stuttgart, Germany, from 27 April through 3 May 2009. Svetlana Kuznetsova won the singles title.
| Player | Nationality | Ranking* | Seeding | |
|---|---|---|---|---|
| Dinara Safina |  Russia | 1 | 1 | |
| Elena Dementieva | Russia | 3 | 2 | |
| Jelena Janković |  Serbia | 4 | 3 | |
| Victoria Azarenka |  Belarus | 8 | 4 | |
| Svetlana Kuznetsova | Russia | 9 | 5 | |
| Nadia Petrova | Russia | 10 | 6 | |
| Caroline Wozniacki | Denmark | 11 | 7 | |
| Agnieszka Radwańska |  Poland | 12 | 8 |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
See main article: 2009 Porsche Tennis Grand Prix – Singles. Svetlana Kuznetsova defeated Dinara Safina, 6–4, 6–3
See main article: 2009 Porsche Tennis Grand Prix – Doubles. 
Bethanie Mattek-Sands / Nadia Petrova defeated 
Gisela Dulko / 
Flavia Pennetta, 5–7, 6–3, 10–7