Mary F. Eastman (October 20, 1833 - November 1, 1908) was an American educator, lecturer, writer, and suffragette. A native of Lowell, Massachusetts, she resided in Tewksbury for many years. She taught in the high and normal school for girls, Boston, then at request of Horace Mann, she went to Ohio to aid in the work of education which he had undertaken at Antioch College. She was among the first to be thought competent to teach and control the students of a winter school in Lowell. Her later teaching was in Charlestown, Massachusetts and Somerville, Massachusetts. Eastman thought that suffrage was the highway to all other reforms. She is remembered for her expertise in the lecture-field of women's rights.