Marc de Beauvau (François Vincent Marc; 29 April 1679 - 10 March 1754) was a member of the powerful French House of Beauvau. He was a Prince of the Holy Roman Empire and known as the Prince of Craon. He also acted at Viceroy of the Grand Duchy of Tuscany. He was also the Prince of Beauvau but known better as the Prince of Craon. He and his wife were close friends with the then Duke and Duchess of Lorraine his wife later being the mistress of the duke. He was also made a "Grandee of Spain".