The War of the Priests (1467-1479, , ) was a conflict in the Polish province of Warmia between the King of Poland Casimir IV and Nicolaus von Tüngen who had been chosen as new Bishop of Warmia without the king's approval by the Warmian chapter. The latter was supported by the Teutonic Knights, by this point vassals of Poland, who were seeking a revision of the recently signed Second Peace of Toruń.