The Secret Hour is a lost 1928 silent film romance drama directed by Rowland V. Lee and starring Pola Negri. A sound version was released during the latter half of 1928. While the sound version of the film had no audible dialog, it featured a synchronized musical score with sound effects using both the sound-on-disc and sound-on-film process. It is based on the 1924 Broadway play, They Knew What They Wanted by Sidney Howard. It was produced by Paramount Famous Lasky Corporation and distributed through Paramount Pictures.