Louis III, Duke of Lower Bavaria

Louis III (1269–1296) was a younger son of Henry XIII of Lower Bavaria. After his father's death in 1290, Lower Bavaria was held by the three brothers Otto III, Louis and Stephen, though Louis and Stephen only became co-regents in summer 1294. In 1293 the brothers agreed on an ordinance to limit their courts, allowing each just twelve horses for his stable.

Louis nevertheless raised taxes to fund a lavish household. He married Isabelle, daughter of Frederick III of Lorraine, and died childless on 13 May 1296, his share falling to his brothers.