John Ford Clymer (1907–1989) was an American painter and illustrator known for images of the American West. Born in Ellensburg, Washington, he studied at the Vancouver School of Art and the Ontario College of Art. His first assignments were for Canadian periodicals and advertisements before he moved to New York in 1935.
Clymer illustrated magazines including Adventure and later became especially associated with western subjects. His paintings and illustrations appeared in The Saturday Evening Post and other publications.