Louis I (July 23, 1339 – September 20, 1384) is the second son of John II of France and the founder of the Angevin branch of the French royal house.

Bonne of Bohemia gives birth to him at the Château de Vincennes.

His father appoints him Count of Anjou and Count of Maine in 1356, then raises him to the title Duke of Anjou in 1360 and Duke of Touraine in 1370.

In 1382, as the adopted son of Joan I, he succeeds to the counties of Provence and Forcalquier.

He also inherits from her a claim to the kingdoms of Naples and Jerusalem.

He is already a veteran of the Hundred Years' War against the English when he leads an army into Italy to claim his Neapolitan inheritance.

He dies on the march and his claims and titles fall to his son and namesake, Louis II, who succeeds in ruling Naples for a time.