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A codebook is a type of document used for gathering and storing codes.

Codebook may also refer to:

• CodeBook, software used in building information modeling
• The Code Book, a 1999 book by Simon Singh
• Codebook algorithm, an algorithm used in cryptography
• Codebook, a password management software by Zetetic LLC
• Codebook excited linear prediction, a speech coding algorithm
• Electronic codebook (ECB), a mode of encryption in cryptography

• Disambiguation pages