Morcar (or Morcere) (Old English: Mōrcǣr, Old Norse: Mǫrukári) (died after 1087) was the son of Ælfgār (earl of Mercia) and brother of Ēadwine. He was the earl of Northumbria from 1065 to 1066, when William the Conqueror replaced him with Copsi.