Eleanor Calvert Custis Stuart (1757/1758 – September 28, 1811) was a prominent member of the Calvert family of Maryland. Upon her marriage to John Parke Custis, she became the daughter-in-law of Martha Dandridge Custis Washington and the stepdaughter-in-law of George Washington. Her portrait hangs today at Mount Airy Mansion in Rosaryville State Park, Maryland.