Christine Wilhelmine Friederike von Grävenitz (4 February 1684 in Schwerin – 21 October 1744 in Berlin) was a German noblewoman who was the royal mistress to Eberhard Louis, Duke of Württemberg, between 1706 and 1731.

Her sister Eleonore served as lady-in-waiting and a confidante of Sophia Louise, Queen of Prussia, while her brother Friedrich Wilhelm [de] was a councilor to Eberhard Louis, Duke of Württemberg.

Their motives for that support are unknown,[3] though their designs were frustrated when Wilhelmine contracted smallpox and her trip to Württemberg had to be delayed by a year.

At the time, Eberhard Louis was pursuing a Madame von Geyling,[4] but Wilhelmine and the Duke would eventually meet and began a relationship.

Eberhard Louis had no love for his wife and viewed his relationship with Wilhelmine as legitimate, but conducted his romance with her publicly and once forced her to respect another of the Duke's extramarital affairs.