Mary Allen or Allan may also refer to:
Mary Wood-Allen (1841–1908), American doctor, social reformer, lecturer, and writer Mary Electa Allen (1858–1941), American photographer Mary Allen Wright (née Allen, 1868–1948), American politician, member of the Idaho House of Representatives Mary Allan (British academic) (1869–1947), British academic, principal of Homerton College, Cambridge Mary Hayes Allen (1875–1935), American educator Mary Sophia Allen (1878–1964), Welsh-born suffragette who was an early police woman and a far right leader Aileen Allen (Mary Aileen Allen, 1888–1950), American diver who competed in the 1920 Summer Olympics Mary Cecil Allen (1893–1962), Australian artist, writer and lecturer Mary Parsons Reid Allan (1917–2002), Scottish artist Mary Belle Allen (1922–1973), American botanist and chemist Mary Allen Wilkes (née Allen, born 1937), American computer programmer and hardware engineer Mary Love (Mary Ann Allen, 1943–2013), American singer Mary Allen (arts administrator) (born 1951), British writer, broadcaster, arts administrator and management consultant Elyse Allan (Mary Elyse Allan, born 1956/7), Canadian businesswoman Mary Cecelia Allen, American writer and writing coach Mary Allen (politician), American politician from New Hampshire
See also Mary Allen West (1837–1892), American journalist, educator, superintendent of schools, and temperance worker Mary Edly-Allen, American politician