Jean Marie du Lau was an 18th-century French prelate who served as the final Archbishop of Arles. Born into an aristocratic family in Biras, he rose through the ecclesiastical hierarchy to hold several significant positions, including Agent General of the Clergy of France. During the French Revolution, he represented the clergy in the Estates-General. His tenure as archbishop ended when the National Assembly abolished his diocese, making him the last person to hold that specific title.