William of Jülich (disambiguation)

William of Jülich may refer to:


 * William of Jülich (died 1304)
 * William V, Duke of Jülich (died 1361)
 * William II, Duke of Jülich (died 1393)
 * William I of Gelders and Jülich (1364-1402)
 * William, Duke of Jülich-Cleves-Berg "the Rich" (1516-1592)