2008 Porsche Tennis Grand Prix – Singles

Justine Henin was the defending champion, but retired from the sport on May 14, 2008.

Jelena Janković won in the final 6–4, 6–3, against Nadia Petrova. Janković became the highest ranking singles player by winning the final.

Seeds
The top four seeds received a bye into the second round. • # 🇺🇸 Serena Williams (second round)

• # 🇷🇸 Jelena Janković (champion)

• # 🇷🇺 Dinara Safina (quarterfinals)

• # 🇷🇺 Elena Dementieva (quarterfinals)

• # 🇷🇺 Svetlana Kuznetsova (first round)

• # 🇺🇸 Venus Williams (semifinals)

• # 🇷🇺 Vera Zvonareva (quarterfinals)

• # 🇵🇱 Agnieszka Radwańska (second round)