Charlotte-Rose de Caumont de La Force or Mademoiselle de La Force (1654–1724) was a French novelist and poet. Her best-known work was her 1698 fairy tale Persinette which was adapted by the Brothers Grimm as the story Rapunzel.
She was the daughter of François de Caumont de La Force (eighth son of Marshal de La Force), marquis de Castelmoron and of Marguerite de Viçose. Raised as a Protestant, she converted to Catholicism in 1686 and received a pension of 1000 écus from Louis XIV. Like other famous women writers of the 17th century, she was named a member of the Academy of the Ricovrati of Padua.
Her first novels were in the popular vein of "histoires secrètes", short novels recounting the "secret history" of a famous person and linking the action generally to an amorous intrigue, such as Histoire secrete de Bourgogne (1694), Histoire secrète de Henri IV, roi de Castille (1695), Histoire de Marguerite de Valois, reine de Navarre (1696).
She had a long affair with the much younger Charles Briou, finally managing to marry him secretly with the king's permission, but her family and his father intervened to have the marriage annulled.