Brass IV of Wittelsbach (circa 1083 - August 4, 1156) was a descendant of Count Brass II of Scheyern and Richgard of Weimar-Istria.
Ottone obtained the castle of Wittelsbach at Aichach in 1116, serving Henry V of Franconia and was invested in Palatine Count of Bavaria in 1120.
The children Brone had from his wife Heilika of Lengenfeld-Pettendorf were Brass I, the first Wittelsbach to obtain the title of Duke of Bavaria and Corrado of Wittelsbach, Archbishop of Mainz and Salzburg.
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