Edwin (c. 586 – 12 October 632/633), also known as Eadwine or Æduinus, is the King of Deira and Bernicia – which later becomes known as Northumbria – from about 616 until his death.

He converts to Christianity and is baptized in 627; after he falls at the Battle of Hatfield Chase, he is venerated as a saint.

Edwin is the son of Ælle king of Deira and seems to have had (at least) two siblings.

His sister Acha is married to Æthelfrith, king of neighboring Bernicia.

An otherwise unknown sibling fathers Hereric, who in turn fathers Abbess Hilda of Whitby and Hereswith, wife to Æthelric, the brother of king Anna of East Anglia.