Mary Fairchild MacMonnies Low, born in New Haven, Connecticut was an American painter who specialized in landscapes, genre paintings, and portraits.
Mary Fairchild MacMonnies Low studied at the St. Louis School of Fine Arts (where she won a three years' scholarship), and in Paris at the Académie Julian and under Carolus Duran.
She had her own studio at 11 Impasse du Maine, (now part of Musée Bourdelle).
She married Frederick MacMonnies in 1888 and divorced him in 1909. She married Will H. Low that same year.