The 2015 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor clay courts. It was the 38th edition of the Porsche Tennis Grand Prix, and part of the Premier tournaments of the 2015 WTA Tour. It took place at the Porsche Arena in Stuttgart, Germany, from 20 April through 26 April 2015. Unseeded Angelique Kerber won the singles title.
<sub>* per team</sub>
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
The following pairs received wildcards into the main draw: