Thurstan or Turstin of Bayeux was a medieval Archbishop of York, the son of a priest. He served kings William II and Henry I of England before his election to the see of York in 1114. Once elected, his consecration was delayed for five years while he fought attempts by the Archbishop of Canterbury to assert primacy over York. Eventually, he was consecrated by the pope instead and allowed to return to England. While archbishop, he secured two new suffragan bishops for his province. When Henry I died, Thurstan supported Henry's nephew Stephen of Blois as king. Thurstan also defended the northern part of England from invasion by the Scots, taking a leading part in organising the English forces at the Battle of the Standard (1138). Shortly before his death, Thurstan resigned from his see and took the habit of a Cluniac monk.

The archbishop of York is a senior bishop in the Church of England, second only to the archbishop of Canterbury. The archbishop is the diocesan bishop of the Diocese of York and the metropolitan bishop of the province of York, which covers the northern regions of England as well as the Isle of Man.