Mary Winslow may refer to:
Mary Winslow, wife of John Sibley (doctor) Mary Blythe Winslow, sponsor of the USS Winslow Mary Chilton (1607–1679), or Mary Chilton Winslow after marriage Mary Matilda Winslow, first Black Canadian female graduate of the University of New Brunswick Mary Nelson Winslow (1887–1952), U.S. Department of Labor Women's Bureau leader and Inter-American Commission of Women delegate Mary Winslow Smyth (1873–1937), American folklorist and folksong collector