Mary Baker
Mary Baker may refer to:
- Mary Baker , English painter
- Bonnie Baker , American baseball player
- Mary Baker Eddy, born Mary Baker, founder of Christian Science
- Mary Landon Baker, American socialite and heiress famous for her romantic life
- Princess Caraboo, English impostor
- Mary E. Baker, African-American community activist
- Mary Baker McQuesten, born Mary Jane Baker, activist
- Mary Ann Baker, American composer and singer
- Mary Lou Baker, member of the Florida House of Representatives and women's rights activist