Marie Christine de Rouvroy (May 7, 1728 - July 4, 1774) was a French noblewoman. She was later a member of the House of Grimaldi by marriage. She was a granddaughter of the famous writer, the "duc de Saint-Simon" (1675-1755). She was known as the Countess of Valentinois or as Princess Charles Maurice of Monaco. She was a lady-in-waiting to three of the daughters of Louis XV of France and to the Countess of Provence.