George Jean Nathan (1882-1958) was an American drama critic and editor. Nathan graduated from Cornell University in 1904, where he was a member of the Quill and Dagger society. Noted for the erudition and cynicism of his reviews, Nathan was an early champion of Eugene O'Neill. Together with H. L. Mencken, he co-founded the magazines The Smart Set in 1914 and The American Mercury in 1924. He was also a founder and an editor (1932- 1935) of the American Spectator, and after 1943 he wrote a syndicated column for the New York Journal-American.