Once Upon a Mattress
- Jaar: 1972
- Land: United States of America
- Genre: Komedie, Muziek, TV Film
- Studio: CBS Studios
- Trefwoord: princess, fairy tale, based on play or musical, royalty, broadway, playful, lighthearted, ridiculous
- Regisseur: Dave Powers, Ron Field
- Gips: Carol Burnett, Ken Berry, Jane White, Bernadette Peters, Jack Gilford, Wally Cox