Mary Lloyd may refer to:
Mary Lloyd, birth name of Molly Drake (1915–1993), English poet and musician Mary Lloyd (WRNS officer) (1902–1972), director of the Women's Royal Naval Service (WRNS) Mary Lloyd (sculptor) (1819–1896), Welsh sculptor Mary Lloyd (abolitionist) (1795–1865), British abolitionist Mary Helen Wingate Lloyd (1868–1934), American horticulturist Mary Merrall (1890–1973), English actress who may have been born Mary Lloyd
See also Marie Lloyd (1870–1922), English music hall singer, comedian, and musical theatre actress Mary Lloyd Jones (born 1934), Welsh printmaker and artist Mari Lwyd, the horse skull puppet of Welsh wassailing tradition