Mary Griffith

Mary Griffith may refer to:


 * Mary Agnes Christina Mesmer Griffith (1864–1948), called Tina, American oldest daughter of Louis and Catherine Mesmer
 * Mary Griffith (writer) (1772–1846), American writer, horticulturist, and scientist
 * Mary Griffith (activist) (1934–2020), American LGBT rights activist
 * Mary Harriett Griffith (1849–1930), Australian philanthropist
 * Mary Lavinia Griffith (1906–1993), American rancher and conservationist