Blond Cheat is a 1938 film directed by Joseph Santley and starring Joan Fontaine, Derrick De Marney, and Cecil Kellaway. The film was produced by William Sistrom, and originally released by RKO Radio Pictures. The original story is by Aladar Lazlo. The screenplay is by Harry Segall, Charles Kaufman, Paul Yawitz, and Viola Brothers Shore. The tagline for the movie was: "A happy blend of blackmail, robbery, treachery, and love!"