Keyhole (disambiguation)

A keyhole is an aperture for receiving a key.

Keyhole may also refer to:

Space and astronomy

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  • 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