Before I Hang
- År: 1940
- Land: United States of America
- Genre: Kriminalitet, Gyser, Sci-fi
- Studio: Columbia Pictures
- Nøgleord: experiment, mad scientist, murder, doctor, pianist, pardon, split personality, anti-aging, mercy killing, convicted murderer, youth serum
- Direktør: Nick Grindé
- Cast: Boris Karloff, Evelyn Keyes, Bruce Bennett, Don Beddoe, Edward Van Sloan, Ben Taggart