Behind Masks is a 1921 American silent drama film directed by Frank Reicher. It was written by Kathryn Stuart based upon the 1909 novel Jeanne of the Marshes by E. Phillips Oppenheim. The film stars Dorothy Dalton, Frederick Vogeding, William P. Carleton, Julia Swayne Gordon, Gladys Valerie, and Kempton Greene. The film was released on July 24, 1921, by Paramount Pictures.A copy of the film is in the Library of Congress, but is incomplete.