Mary McCarthy or Mary MacCarthy may refer to:
The arts
- Mary Downing (1815âÂÂ1881), Irish poet born Mary McCarthy
- Mary Stanislaus MacCarthy (1849âÂÂ1897), Irish poet and nun
- Mary MacCarthy (1882âÂÂ1953), English writer and member of the Bloomsbury Group
- Mary Eunice McCarthy (1899âÂÂ1969), American screenwriter, playwright, and journalist
- Mary McCarthy (author) (1912âÂÂ1989), American novelist, critic, and memoirist
- Mary McCarthy (screenwriter), American, screenwriter for movies Theodora Goes Wild (1936) and Sister Kenny (1946)
- Mary McCarthy (fiction writer) (1951âÂÂ2013), Irish novelist, teacher, book reviewer
Other