2019 Porsche Tennis Grand Prix – Singles

Karolína Plíšková was the defending champion, but lost in the second round to Victoria Azarenka.

Petra Kvitová won the title, defeating Anett Kontaveit in the final, 6–3, 7–6.

Naomi Osaka retained the WTA no. 1 singles ranking by reaching the quarterfinals. Kvitová was also in contention for the top ranking at the beginning of the tournament.