Mary Austin may refer to:
- Mary Hunter Austin (1868–1934), American writer of fiction and non-fiction
- Mary V. Austin (1900–1986), Australian community worker and political activist
- Mary Brown Austin (1768–1824), mother of Texan pioneer Stephen F. Austin
- Mary Austin (born 1951), closest friend and former girlfriend of British singer-songwriter Freddie Mercury
- Mary Austin, wife of Brewster Kahle and co-founder of the Kahle/Austin Foundation
- Mary Austin, pseudonym of American science fiction writer Jane Rice
- Mary-Austin Klein (born 1964), American landscape painter
- Mount Mary Austin, mountain in California's Sierra Nevada range
See also
edit- Mary Austin Holley (1784–1846), American historical writer