Aldhun of Durham (died 1018 or 1019), also known as Ealdhun, was the last Bishop of Lindisfarne (based at Chester-le-Street) and the first Bishop of Durham. He was of "noble descent". Since the late 9th century the see of Lindisfarne was based at Chester-le-Street because of constant attacks from invading Danes. However, in 994 King Æthelred II of England had paid a Danegeld (protection money) to King Sweyn I of Denmark and King Olaf I of Norway in return for peace. The pay-off worked and there followed a period of freedom from Viking raids. This encouraged Aldhun to return the remains of Cuthbert of Lindisfarne to their original resting place at Lindisfarne, and to reinstate the diocese there.