Élisabeth Charlotte d'Orléans (13 September 1676 – 23 December 1744) was a niece of Louis XIV and wife of Leopold, Duke of Lorraine. She was later regent of Lorraine. As a widow she was created Princess of Commercy. Among her children was Francis I, Holy Roman Emperor, father of Marie Antoinette. She also had much input in the construction of the "Château de Lunéville". She also introduced the future architect "Germain Boffrand" to the royal courts in 1711. 