Morcar (or Morkere) (d. 1087) was the son of Aelfgār, Earl of Mercia and brother of Edwin. He was himself the Earl of Northumbria from 1065 to 1066, when he was replaced by William the Conqueror with Copsig. After the death of Harold Godwinson at the Battle of Hastings, Edwin and Morcar threw their support behind the Edgar the Atheling, who was proclaimed king, but they failed to muster an effective military response to the invading forces of William of Normandy and soon submitted. In 1068 they raised a revolt in Mercia, but rapidly capitulated when William advanced against them.