| 2018 Porsche Tennis Grand Prix | |
|---|---|
| Date | 22–29 April |
| Edition | 41st |
| Category | Premier |
| Draw | 28S / 16D |
| Prize money | $816,000 |
| Surface | Clay (indoor) |
| Location | Stuttgart, Germany |
| Venue | Porsche-Arena |
| Champions | |
| Singles | |
 Karolína Plíšková | |
| Doubles | |
 Raquel Atawo /  Anna-Lena Grönefeld | |
The 2018 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor clay courts. It was the 41st edition of the Porsche Tennis Grand Prix, and part of the Premier tournaments of the 2018 WTA Tour. It took place at the Porsche Arena in Stuttgart, Germany, from 23 to 29 April 2018.