Wulfsige III was a tenth-century Benedictine monk and the Bishop of Sherborne. Born in London around 1000, he was a prominent figure in the English monastic reform movement led by Saint Dunstan. He served as the abbot of Westminster before being appointed to the bishopric by King Edgar the Peaceful. During his tenure, he reorganized the cathedral community at Sherborne into a Benedictine abbey, emphasizing monastic discipline within the episcopal seat.