The 2005 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Club in Filderstadt, Germany that was part of Tier II of the 2005 WTA Tour. It was the 28th edition of the tournament and was held from 3 October until 9 October 2005. First-seeded Lindsay Davenport won the singles title and earned $98,500 first-prize money.[1]
See main article: 2005 Porsche Tennis Grand Prix – Singles. 
Lindsay Davenport defeated 
Amélie Mauresmo 6–2, 6–4
See main article: 2005 Porsche Tennis Grand Prix – Doubles. 
Daniela Hantuchová / 
Anastasia Myskina defeated 
Květa Peschke / 
Francesca Schiavone 6–0, 3–6, 7–5
| Event | W | F | SF | QF | Round of 16 | Round of 32 | ||
| style=background:#efefef | Singles | $98,500 | $53,000 | $28,300 | $15,150 | $8,100 | $4,350 |
|---|