Code word may refer to:

• Code word (communication), an element of a standardized code or protocol
• Code word (figure of speech), designed to convey a predetermined meaning to a receptive audience, while remaining inconspicuous to others
  • Procedure word, in voice communication
  • Code word, an element of a codebook designed so that the meaning of the code word is opaque without the code book
  • Code name, a clandestine name or cryptonym used to identify sensitive information
• password, passcode, codeword, countersign; a word that is a special code for access, to pass a challenge of a sentry
• Code Words, an online coding and programming publication