The Spiral Staircase
- annos singulos: 1946
- Patriam: United States of America
- genus: Mystery, Thriller, Horror
- Studio: RKO Radio Pictures, Dore Schary Productions, Vanguard Films
- keyword: based on novel or book, staircase, childhood trauma, violence against women, half-brother, stepson, mute, serial killer, killer, old dark house, gothic, spiral staircase, speech impediment, bedridden, stormy night, pair of evil eyes, physical disability, proto-slasher, speech impaired, spree killer, mute servant, traumatized woman, imperfection, horror noir, lost voice, target the handicapped
- Director: Robert Siodmak
- cast: Dorothy McGuire, George Brent, Ethel Barrymore, Kent Smith, Rhonda Fleming, Gordon Oliver