A criminal code (or penal code) is a document that compiles all, or a significant amount of a particular jurisdiction's criminal law. Typically a criminal code will contain offences that are recognised in the jurisdiction, penalties that might be imposed for these offences, and some general provisions (such as definitions and prohibitions on retroactive prosecution).

Criminal codes are relatively common in civil law jurisdictions, which tend to build legal systems around codes and principles which are relatively abstract and apply them on a case-by-case basis. Conversely they are not as common in common law jurisdictions.