Petra Scharbach, best known as Petra, is a German actress, model, singer and painter. She was sometimes credited as Petra Rockstar.

Born in Frankfurt, at 6 moved to Parma with her mother. In Italy, after having participated and won several beauty contests and worked as a model in local fashion shows, debuted in the mid-eighties as singer and softcore actress. In the same period she appeared on the cover of Playmen and of the French edition of Penthouse.