Northman was a late 10th-century English ealdorman, with a territorial base in Northumbria north of the River Tees. He appears in two different strands of source. These are, namely, the textual tradition of Durham witnessed by Historia de Sancto Cuthberto and the Durham Liber Vitae, and an appearance in a witness list of a charter of King Æthelred II dated to 994. The latter is Northman's only appearance south of the Humber, and came the year after Northumbria was attacked by Vikings.