Isabel Martin Lewis, American astronomer and author (d. 1955?)
Isabel Martin Lewis (July 11, 1881 – July 31, 1966) was an American astronomer who was the first woman hired by the United States Naval Observatory as assistant astronomer. In 1918, Lewis was elected a member of the American Astronomical Society. She was also a member of the Royal Astronomical Society of Canada and the Astronomical Society of the Pacific.