Black Friday
- Ár: 1940
- Land: United States of America
- Genre: Science Fiction, Crime, Horror
- Stúdíó: Universal Pictures
- Lykilorð: experiment, gangster, professor, murder, mad doctor, car accident, brain surgeon, hidden loot, brain transplant, hidden money
- Leikstjóri: Arthur Lubin
- Leikarar: Stanley Ridges, Boris Karloff, Bela Lugosi, Anne Nagel, Anne Gwynne, Virginia Brissac