Fear Allerton (née Brewster; c. 1606 - before December 12, 1634) was a woman in Colonial America.
Fear was only 14 when her parents and two younger brothers, Love and Wrestling, left for America on the Mayflower.
Fear married Isaac Allerton, another Mayflower pilgrim, around 1623 or 1627.
They also had a son, Isaac Allerton Jr., a colonial merchant and colonel, born between 1627 and 1630.
On December 12, 1634, Governor John Winthrop reported to his son that both Fear and her sister Patience Brewster Prence had died, writing a "pestilent fever hath taken away some at Plimouth, amonge others Mr. Prence the Governor his wife and Mr. Allerton's wife.