Thomas Wilmer Dewing was an American painter working at the turn of the 20th century. Schooled in Paris, Dewing was noted for his figure paintings of aristocratic women. He was a founding member of the Ten American Painters and taught at the Art Students League of New York. The Freer Gallery of Art at the Smithsonian Institution has a collection of his works. He was the husband of fellow artist Maria Oakey Dewing.