Sara J. Hatcher Duncan (born October 5, 1869, Cahaba, Alabama, died July 18, 1906, Selma, Alabama) was an African- American social activist who was appointed President of the African Methodist Episcopal Church's Women's Home and Foreign Missionary Society in 1900.
Her mother, Eliza English, was mixed-race and died shortly after Duncan's birth.
Duncan was educated at the Presybeterian Knox Academy, Selma, Alabama, from 1881; she subsequently became a schoolteacher.
In 1896 she returned to Selma from Rome, and was involved in the foundation of the Women's Home and Foreign Missionary Society.
Her later life is obscure but she wrote a book about the missionary activity of the A.M.E. Church in 1906.