Blackmail
- Taon: 1939
- Bansa: United States of America
- Genre: Crime, Drama, Thriller
- Studio: Loew's Incorporated, Metro-Goldwyn-Mayer
- Keyword: gangster, chain gang
- Direktor: H. C. Potter
- Cast: Edward G. Robinson, Ruth Hussey, Gene Lockhart, Bobs Watson, Guinn "Big Boy" Williams, John Wray