Eleanor Shipley Duckett (7 November 1880, Bridgwater, Somerset, England – 23 November 1976) was an English-born philologist and medieval historian who spent most of her career in the United States. For thirty years, she taught at Smith College (Northampton, Massachusetts). Duckett published a number of books with University of Michigan Press, mainly on European history, religious history, and saints, and was a reviewer for The New York Times Book Review. Initially, Duckett was known for writing accessible historical books on the Middle Ages; later, she acquired a reputation as an authority on early medieval saints. A devout Episcopalian, Duckett was the lifelong companion of novelist Mary Ellen Chase.