Æthelwulf (died 858) was King of Wessex from 839 until his death.
Æthelwulf may also refer to: Æthelwulf, or Adulf (died ), Anglo-Saxon cleric and saint Æthelwulf of Elmham (died after 781), Anglo-Saxon Bishop of Elmham Æthelwulf of Selsey (died ), Anglo-Saxon Bishop of Selsey Æthelwulf of Berkshire (died 871), Saxon ealdorman who won the Battle of Reading Æthelwulf, or Athulf (died after 1013), Anglo-Saxon Bishop of Hereford Æthelwulf (poet), Anglo-Saxon poet, author of De abbatibus Xavier Wulf, formerly Ethelwulf, American rapper and songwriter
See also Adelolf, Count of Boulogne (died 933), Flemish-Saxon nobleman