Mary Carolyn Davies (1888–?) was an American writer from Oregon. She was a poet, short story writer, and playwright. She lived for a period in New York, where she was a participant of several writing soirées. She later moved back to Oregon, where she led writing organizations. She again moved back to New York in the 1930s, and after this, she was no longer in the public eye. It is not known when she died, but by 1940, she had been sick for a few years.

Mary Catherine Crowley was an American author of poems and novels. She was also an accomplished musician and linguist. Crowley began her literary work in 1877 as a contributor of poems and short stories to Wide Awake, St. Nicholas Magazine, Ladies' Home Journal, and The Pilot. In 1892, she went to Europe and on her return, lived for ten years in Detroit, where she was a collaborator on the Memorial History of the city. Crowley was a recognized authority on the early history of that city, and a leader in its bicentennial celebration in 1901, the pageant being founded on descriptions in her book A Daughter of New France.

Mary Cholmondeley was an English novelist. Her bestseller, Red Pottage, satirised religious hypocrisy and the narrowness of country life. It was adapted as a silent film in 1918.

Mary Victoria Cowden Clarke was an English author, and compiler of a concordance to Shakespeare.

Mary De Morgan was an English writer and the author of three volumes of fairytales: On a Pincushion (1877); The Necklace of Princess Fiorimonde (1880); and The Windfairies (1900). These volumes appeared together in the collection The Necklace of Princess Fiorimonde – The Complete Fairy Stories of Mary De Morgan, published by Victor Gollancz Ltd in 1963, with an introduction by Roger Lancelyn Green.

Mary Eleanor Wilkins Freeman was an American author.

Mary Ellen Chase was an American educator, teacher, scholar, and author. She is regarded as one of the most important regional New England literary figures of the early twentieth century.

Mary Eliza Bakewell Gaunt was an Australian novelist, born in Chiltern, Victoria. She also wrote collections of short stories, novellas, autobiographies, and non-fiction. She published her first novel Dave's Sweetheart in 1894. Gaunt visited many countries in her life and she wrote about her experiences in five travel books.

Mary Grant Bruce, also known as Minnie Bruce, was an Australian children's author and journalist. While all her thirty-seven books enjoyed popular success in Australia and overseas, particularly in the United Kingdom, she was most famous for the Billabong series, focussing on the adventures of the Linton family on Billabong Station in Victoria and in England and Ireland during World War I.

Mary Hallock Foote (1847–1938) was an American author and illustrator. She is best known for her illustrated short stories and novels portraying life in the mining communities of the turn-of-the-century American West.