Léopold Clément, Hereditary Prince of Lorraine (Léopold Clément Charles; 25 April 1707 – 4 June 1723) was heir apparent to the throne of the sovereign Duchy of Lorraine. His father was the reigning Duke of Lorraine and his mother a member of the House of Bourbon, then ruling the Kingdom of France. He became the Hereditary Prince at the death of his older brother Louis in 1711, but died of smallpox in 1723 at the age of sixteen, unmarried and without descendants.