Adolf of Nassau may refer to:Adolf, King of Germany, King of the Romans Adolph I, Count of Nassau-Wiesbaden-Idstein (1307–1370) Adolf I, of the House of Nassau-Wiesbaden-Idstein Adolf I, Count of Nassau-Siegen (1362–1420) Adolph II, Count of Nassau-Wiesbaden-Idstein (1386–1426) Adolf II (1423–1475), of the House of Nassau-Wiesbaden-Idstein Adolph III, Count of Nassau-Wiesbaden-Idstein (1443–1511) Adolph IV, Count of Nassau-Wiesbaden-Idstein (1518–1556) Adolph, Count of Nassau-Saarbrücken (1526–1559) Adolf of Nassau (1540–1568), brother of Louis of Nassau and William I of Orange, killed in the Battle of Heiligerlee Adolf of Nassau-Siegen (1586–1608), son of Count John VII Adolph, Prince of Nassau-Schaumburg (1629–1676), son of Louis Henry of Nassau-Dillenburg Adolph, Count of Ottweiler (1789–1812) Adolphe, Grand Duke of Luxembourg (1817–1905), Duke of Nassau and later Grand Duke of Luxembourg