Trapdoor (disambiguation)

A trapdoor is a door set into a floor or ceiling.

Trapdoor or Trap Door may also refer to:


 * Trap Door (magazine), a science fiction fanzine
 * The Trap Door, a British animated TV series
 * The Trap Door (video game), a computer game based on the animated series
 * Trapdoor (software), a piece of computer software used for network administration
 * Trapdoor (company), a video game developer
 * Trapdoor function, a type of mathematical function used in cryptography
 * "Trapdoor", in computing, an outdated synonym for "backdoor", a method used to circumvent normal authorization
 * Trap Door (EP), an EP by T-Bone Burnett, or the title song
 * "Trap Door", a song by Ozzy Osbourne from Black Rain
 * "Trap Door" Springfield, a single-shot breechloading rifle designed and produced at Springfield Armory during the late 19th century.
 * Trapdoor spider, a spider
 * Trap Door Spiders, a literary society
 * Trapdoor mechanism for breech loading rifles
 * "Trapdoor", a song by Twenty One Pilots from their self-titled album
 * "Trapdoor", a song by King Gizzard & the Lizard Wizard from their album Paper Mâché Dream Balloon.
 * "Trap Door", a song by Joey Badass from his album Summer Knights
 * "Trap Door", a song by OneRepublic from their album Waking Up