Bosa of York was an Anglo-Saxon bishop who served the see of York during the late 7th and early 8th centuries. Educated as a monk at Whitby Abbey under Abbess Hilda, he was one of several students from that monastery to eventually ascend to the episcopacy. His tenure as bishop was marked by shifts in political and religious authority, specifically involving the movements of his predecessor, Wilfrid. Bosa is remembered for establishing communal living for the cathedral clergy and maintaining a continuous liturgy.