Atherton Blight (November 10, 1834 – November 4, 1909) was a Philadelphia lawyer, businessperson, author, diarist, and philanthropist who traveled extensively in the middle of the 19th century to Europe and the Middle East. Blight was also a founding member of the Art Club of Philadelphia, a major stockholder in the Newport Casino, and a member of the millionaires club of the gilded age.