Marie Danforth Page (1869–1940) was an American painter, mainly of portraits.
A native of Boston, Page began drawing lessons with Helen M. Knowlton at 17. These continued until 1889, when she began five years of lessons at the School of the Museum of Fine Arts, Boston, under the tutelage of Frank Weston Benson and Edmund Charles Tarbell. In 1903 she traveled to Europe, where she copied paintings of Diego Velazquez while in Spain; on her return she took lessons at Harvard University in color theory with Denman Ross. She also studied informally with Abbott Handerson Thayer at some point. In 1896 she married Dr. Calvin G. Page, a research bacteriologist, and settled with him at 128 Marlborough Street in Boston, where she had a studio on the top floor. The couple would adopt two daughters, Susan and Margaret, in 1919.
Page soon began to receive commissions at home; some of these were simply for copies of works by people like Gilbert Stuart, but others were for original portraits. Three of her paintings were accepted for the Panama-Pacific Exhibition of 1915 in San Francisco, and one won a bronze medal. Further prizes followed, at the National Academy of Design – to which she was elected as an associate in 1927 – and the Newport Art Association, and her first one-woman show came in 1921 at the Guild of Boston Artists. She continued to win prizes, including an honorary MA from Tufts University, and show work until her death.