Mary Carpenter (1807–1877) was an English educational and social reformer.
Mary Carpenter may also refer to: Mary Chapin Carpenter (born 1958), American singer, songwriter, and musician Mary Elizabeth Sutherland Carpenter, better known as Liz Carpenter (1920–2010), American writer, feminist, reporter, media advisor, speechwriter, political humorist, and public relations expert Mary Imogen Carpenter (1912–1993), American actress, musician, composer, and music lecturer Mary P. Carpenter (c. 1840–c. 1905), American inventor