Nancy Evelyn Guptill (April 28, 1941 – August 24, 2020) was a Canadian politician from Prince Edward Island (PEI). She served in its Legislative Assembly from 1987 to 2000. A member of the provincial Liberal Party, she represented the electoral districts of 5th Prince from 1987 to 1996 and St. Eleanors-Summerside from 1996 to 2000. She was noted for being part of PEI's Famous Five when she was elected speaker in 1993.