Key (disambiguation)

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A key is an object used to open a lock.

Key might also mean:

  • Key (music), a combination of notes used to write a piece of music
  • Key, the switches on a computer keyboard that are pressed to enter data into a computer
  • Key, the levers or buttons on a musical instrument that are pressed to make a sound or note
  • Key (company), a Japanese visual novel company
  • Key (cryptography), a piece of information that allows encryption or decryption
  • Cay, a type of island, such as the Florida Keys