Louis I, Duke of Anjou (23 July 1339 – 20 September 1384) was a French prince, the second son of John II of France and Bonne of Bohemia. His career was markedly unsuccessful. Born at the Château de Vincennes, Louis was the first of the Angevin branch of the Valois royal house. His father appointed him Count of Anjou and Count of Maine in 1356, and then raised him to the title Duke of Anjou in 1360 and Duke of Touraine in 1370.
He fought in the Battle of Poitiers (1356), in which his father the king was captured by the English. In 1360, he was one of a group of hostages the French surrendered to the English in exchange for the king. He escaped from England, after which his father felt bound in honour to return to English custody, where he later died.