Stranger on the Third Floor
- År: 1940
- Land: United States of America
- Genre: Mystik, Thriller
- Studio: RKO Radio Pictures
- Nyckelord: film noir, b movie, wrongful conviction
- Direktör: Boris Ingster
- Kasta: Peter Lorre, John McGuire, Margaret Tallichet, Charles Waldron, Elisha Cook Jr., Charles Halton