Cat in a box or cat in the box may refer to:
- Schrödinger's cat, a thought experiment that puts a cat in a quantum superposition of alive and dead
- Cat in the Box Games, developers of Blue Defense: Second Wave!
- "Cat In A Box", a track on Morningwood's 2009 album Diamonds & Studs
- "Cat in the Box", a 2015 parody of Alice in Chains's song "Man in the Box"
- "Cat in a Box", a short story by Gareth L. Powell in his 2008 anthology The Last Reef and Other Stories
- The Cat in the Box, a 2019 book by researcher Chris Ferrie
- "Cat in the Box", a 2017 episode in the second season of Super Wings
- "Cat in the Box", a 2017 episode in season 2 of the TV series You Me Her
- Cat in the Box, an unreleased 1993 film by Valeria Golino
- Cat in the Box, a 2020 RPG Maker horror game created by Gustav and published by PsychoFlux Entertainment
See also
edit- Letting the cat out of the bag, to reveal facts previously hidden