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Ann Preston (December 1, 1813 - April 18, 1872) was an American doctor and educator. After her younger brothers were old enough to care for themselves, she worked as a schoolteacher. In 1849, she published a book of nursery rhymes, Cousin Ann's Stories. By the 1840s, she became interested in educating women about their bodies and taught all-female classes on hygiene and physiology. Unable to gain admittance to male medical school because of biases against women, she entered the Quaker-run Female Medical College of Pennsylvania when it first opened, where she was one of five women awarded an M.D. in 1851. In 1853 she became a professor of physiology and hygiene at her alma mater. In 1866 she became the first woman to become the dean of a medical school, a position that allowed her to champion the right of women to become physicians. In 1871 she suffered from an attack of acute articular rheumatism, which left her in a weakened state. She suffered a relapse the following year at the age of 58.
