Joan of Valois, Duchess of Alençon

Joan of Valois (13 September 1409, in Blois – 19 May 1432, in Angers) was the only surviving child of Charles, Duke of Orléans, and Isabella of Valois.

Joan's mother Isabella had previously been the queen-consort of Richard II of England, a childless marriage. Joan's father Charles would later remarry and become the father of Louis XII of France through his third wife, Marie of Cleves. She had no siblings as her mother died giving birth to Joan. It would not be until her father's third marriage that her half siblings would be born, Marie d'Orleans, Louis XII of France and Anne d'Orleans.

In 1424 at Blois, Joan married John II of Alençon, but they remained childless. She died in 1432, leaving him free to later marry Marie of Armagnac.