Decoding is the reverse of encoding, which is the process of transforming information from one format into another. Information about decoding can be found in the following:

• Analog decoding, the use of analog circuit for decoding operations
• Code, a rule for converting a piece of information into another form or representation
• Code (cryptography), a method used to transform a message into an obscured form
• Decoding (Computer Science)
• Decoding methods, methods in communication theory for decoding codewords sent over a noisy channel
• Digital signal processing, the study of signals in a digital representation and the processing methods of these signals
• Word decoding, the use of phonics to decipher print patterns and translate them into the sounds of language