Mary Hughes (1874–1958) was the second wife of Billy Hughes, Prime Minister of Australia. Mary Hughes may also refer to: Mary Vivian Hughes (1866–1956), British author and educator Mary Beth Hughes (1919–1995), American actress Mary Hughes (social worker) (1860–1941), British social worker Mary Hughes (British author), British author and teacher Mary Hughes (bowls), lawn bowls competitor for Wales See also Hughes (surname)