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• "Trapdoor", in computing, an outdated synonym for "backdoor", a method used to circumvent normal authorization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