Half a Sinner
- Taon: 1940
- Bansa: United States of America
- Genre: Mystery, Adventure, Comedy
- Studio: Arcadia Pictures Corp., Universal Pictures
- Keyword: gangster, stool pigeon
- Direktor: Al Christie
- Cast: Heather Angel, John 'Dusty' King, Constance Collier, Tom Dugan, Robert Elliott, Clem Bevans