Princess Elisabeth Charlotte (; known as Liselotte von der Pfalz, 27 May 1652 – 8 December 1722), was a German princess and the wife of Philippe of France, Duke of Orléans, younger brother of Louis XIV. She is best known for her vast correspondence detailing the court of her brother in law. She was referred to at court as simply "Madame", as well as "La Palatine" and the "Princess Palatine" ("Princesse Palatine")