Mary Proctor (1862 – September 11, 1957) was an American popularizer of astronomy.
She was born in Dublin, Ireland, the daughter of Mary and Richard Proctor. They emigrated to the United States in 1882. Her father was a British popularizer of astronomy, and she gained her knowledge of the subject from him. She authored many articles for newspapers and journals, and wrote a number of popular books.
Despite various claims as being an American, there is a passenger list of about 1924 where she gives nationality as British.
Creese, Mary R. S. (1998). Ladies in the laboratory? : American and British women in science, 1800-1900 : a survey of their contributions to research. Lanham, Md.: Scarecrow. pp. 236–238. ISBN9780810832879.
Moore, Patrick; Thomas Hockey; Katherine Bracher; Marvin Bolt; Virginia Trimble; Richard Jarrell; JoAnn Palmeri; Jordan D. Marché; Thomas Williams; F. Jamil Ragep (2007). "Proctor, Mary". In Bracher, Katherine. The biographical encyclopedia of astronomers ([Online-Ausg.] ed.). New York, NY: Springer. ISBN9780387304007.