King Leopold may refer to: Leopold I of Belgium (1790–1865), first king of the Belgians Leopold II of Belgium (1835–1909), second king of the Belgians and founder and owner of the Congo Free State Leopold III of Belgium (1901–1983), fourth king of the Belgians Leopold I, Holy Roman Emperor (1640–1705), also king of Hungary, Bohemia and Croatia Leopold II, Holy Roman Emperor (1747–1792), also king of Hungary, Bohemia and Croatia