René of Anjou (; ; 1409–1480), also known as René I of Naples and Good King René (; ), was count of Piedmont, duke of Bar (1430–80), duke of Lorraine (1431–53), duke of Anjou, count of Provence (1434–80), king of Naples (1435–42; titular 1442–80), titular king of Jerusalem (1438–80) and Aragon including Sicily, Majorca and Corsica (1466–80).