Otto II of Bavaria (German: Otto II der Erlauchte, Herzog von Bayern, Pfalzgraf bei Rhein, 7 April 1206 in Kelheim – 29 November 1253) known as Otto the Illustrious was the Duke of Bavaria and Count Palatine of the Rhine (see Electorate of the Palatinate).
He was the son of Ludwig I and Ludmilla of Bohemia and a member of the Wittelsbach dynasty.