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Lock may refer to:

Common meanings

Information technology

  • File locking, describes a mechanism that restricts access to a computer file
  • Lock (computer science), a bookkeeping object used to serialize concurrent access
  • Lock (database), a feature used when multiple users access a database concurrently
  • SIM lock, a restriction on mobile phones to work only in certain countries or with certain providers



  • Lock (surname)
  • Ormer Locklear (1891–1920), American stunt pilot and film actor nicknamed "Lock"
  • Lock Martin (1916–1959), stage name of American actor Joseph Lockard Martin, Jr., best known for playing the robot Gort in the film The Day the Earth Stood Still

Film and fictional characters

See also