Mary Baker Eddy (born Mary Morse Baker, July 16, 1821 – December 3, 1910) was the founder of Christian Science, a religious movement that emerged in New England in the late 19th century.
Eddy is the author of the movement’s textbook, Science and Health with Key to the Scriptures (first published 1875), and founder of the Church of Christ, Scientist (1879). She also founded the Christian Science Publishing Society (1898), which continues to publish a number of periodicals, including The Christian Science Monitor (1908).