Æthelwine (died 992) was ealdorman of East Anglia and one of the leading noblemen in the kingdom of England in the later 10th century.
Following the death of King Edgar, Æthelwine was, with Oswald of Worcester and Dunstan, a leader among the supporters of Edgar's oldest son Edward, which placed him in opposition to his former sister-in-law Dowager Queen Ælfthryth and Ælfhere, Ealdorman of Mercia.
During the anti-monastic reaction in Edward's short reign, Æthelwine is portrayed as a stalwart supporter of the monks, but the record suggests that he took advantage of the weakness of royal government to dispossess the monks of Ely of lands.
Byrhtferth provides more detail, reporting that, perhaps following a lengthy illness, Æthelwine was attended at his death by Germann, Abbot of Ramsey, and Ælfheah, later Archbishop of Canterbury.
Byrhtferth mentions Edwin; another son named Leofric appears to have witnessed a will in 986, while Æthelweard was killed fighting for Edmund Ironside at the Battle of Ashingdon in 1016.