Conrad of Krosigk was a German prelate, crusader and monk. He served as the bishop of Halberstadt from 1201 until 1208 and took part in the Fourth Crusade in 1202–1204. He resigned his see to become a Cistercian monk at Sittichenbach Abbey. In his retirement, he undertook frequent Papal missions.

The Diocese of Halberstadt was a Roman Catholic diocese from 804 until 1648. From 1180, the bishops or administrators of Halberstadt ruled a state within the Holy Roman Empire, the prince-bishopric of Halberstadt. The diocesan seat and secular capital was Halberstadt in present-day Saxony-Anhalt.