Saint Hunger, also referred to as Hungerus Frisus, was the was the Bishop of Utrecht from 854 to 866. At first his relations with the Vikings were peaceful, but eventually Utrecht was threatened by the Vikings, which caused the bishop and the entire clergy of Utrecht to flee to Sint Odiliënberg, near Roermond. In 858 king Lothair II made a monastery available for them. Later the bishop settled in Prüm and then in Deventer.
Saint Hunger seems to have been a godly man who, unlike his predecessors, did not engage in nepotism. In the case of the childless marriage between Lothair II and his wife Teutberga, he defended the sanctity of their marriage on biblical and theological grounds, but to secure his succession, Lothair II repudiated his wife and married Waldrada, with whom he had a son.