The Solitary Sin
- År: 1919
- Land: United States of America
- Sjanger: Drama
- Ettromsleilighet: New Art Film Company, Solitary Sin Corporation, Public Welfare Pictures Corp.
- Nøkkelord: insane asylum, hospital, masturbation, syphilis, sexually transmitted disease, venereal diseases
- Regissør: Frederick Sullivan
- Cast: Jack Mulhall, Helene Chadwick, Gordon Griffith, Leo Pierson, Pauline Curley, Charles Spere
