Æthelwold was a common Anglo Saxon name. It may refer to:

• King Æthelwold of Deira, King of Deira, d. 655
• King Æthelwold of East Anglia, King of East Anglia, d. 664
• King Æthelwold Moll of Northumbria, King of Northumbria, d. post-765
• Æthelwold ætheling, son of King Æthelred of Wessex, d. 902
• Æthelwald, Ealdorman of East Anglia, son of Æthelstan Half-King, d. 962

• Saint Æthelwold (hermit), hermit on Inner Farne, d. 699; feast kept 23 March
• Saint Æthelwold (bishop of Lindisfarne), Abbot of Melrose and Bishop of Lindisfarne, d. 740; feast kept 12 February
• Saint Æthelwold of Winchester, Bishop of Winchester, d. 984; feast kept 1 August

• Æthelweald, Bishop of Dunwich, mid-9th century
• Æthelwold (bishop of Lichfield), Bishop of Lichfield, d. 845
• Æthelwold (bishop of Dorchester), Bishop of Dorchester, d. 950
• Æthelwold II (bishop of Winchester), Bishop of Winchester, d. 1012
• Æthelwold (bishop of Carlisle), Bishop of Carlisle, d. 1157