Sir Peter Carew (died 25 August 1580) was an English soldier who was slain at the Battle of Glenmalure in Ireland. He was a member of a prominent Devonshire gentry family. He is sometimes referred to as Sir Peter Carew the younger, to distinguish him from his first cousin (and immediate predecessor as head of the family) Sir Peter Carew (c.1514–1575) of Mohuns Ottery, Luppitt, Devon.