Bernicia (Old English: Bernice, Beornice; Latin: Bernicia) is an Anglo-Saxon kingdom established by Anglian settlers of the 6th century in what is now southeastern Scotland and North East England.The Anglian territory of Bernicia is approximately equivalent to the modern English counties of Northumberland and Durham, and the former Scottish counties of Berwickshire and East Lothian, stretching from the Forth to the Tees.

In the early 7th century, it merges with its southern neighbor, Deira, to form the kingdom of Northumbria and its borders subsequently expand considerably.