Henri II d'Orléans, Duke of Longueville (1596-1663), was a French nobleman and military leader during the early 17th century. He was a member of the House of Orléans, a cadet branch of the royal House of Capet. Henri played a significant role in the French Wars of Religion and later in the Fronde, a series of civil wars in France. As Duke of Longueville, he held considerable influence and was known for his political alliances and military strategies. His contributions to the French court and his involvement in various conflicts helped shape the political landscape of France during his lifetime.