William Sartain (21 November 1843 – 1924) was an American artist.
He was born in Philadelphia, and his father was John Sartain. He went to high school with Thomas Eakins; they traveled together in 1868. He studied at the Pennsylvania Academy of the Fine Arts. He stayed in Paris until 1875, when he returned to Philadelphia, and moved to New York City.
Sartain, William (1905). Exhibition of pictures. New York: MacBeth Gallery.