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A keyhole is an aperture for receiving a key.

Keyhole may also refer to:

• The Keyhole, a 1933 American film directed by Michael Curtiz
• Keyhole (film), 2011, by Canadian director Guy Maddin
• Keyhole (roller coaster element)
• Keyhole, Inc., a data visualization company acquired by Google
• Keyhole (comics), an alternative comic published in the 1990s
• Keyhole surgery
• Keyhole cichlid, a fish from the genus Cleithracara
• Keyhole button closure, a button, usually found on the back of a woman's blouse
• Keyhole Falls, a waterfall in British Columbia, Canada
• Keyhole Glacier, on Baffin Island, Nunavut, Canada
• A type of cockpit on a kayak or sea kayak
• ″Keyhole″, a short story by Murray Leinster
• Keyhole race, a speed-based equestrian sporting event

Space and astronomy

• Gravitational keyhole, a region of a large body's orbit that could cause a small body to collide with it
• Keyhole, a region of the sky toward which a telescope cannot point (as in the keyhole problem)
• Keyhole nebula, another name for the Carina Nebula
• Key Hole (KH), a series of imaging satellites
• The KH-11 KENNEN reconnaissance satellite, codenamed Key Hole

• Disambiguation pages