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
| This disambiguation page lists articles associated with the title Key.
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