Amatus of Nusco was an eleventh-century bishop and monk from southern Italy. Born around 1003, he was likely of noble descent before choosing a life of religious devotion. After giving away his entire worldly fortune to those in need, he served as a priest and later joined the Abbey of Montevergine. He eventually became the first bishop of Nusco, a location in the Irpinia region. He is remembered for his significant transition from nobility to asceticism.