ISO 3166-2:CN is the entry for China in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g. provinces or states) of all countries coded in ISO 3166-1. Currently for China, ISO 3166-2 codes are defined for the following province-level subdivisions: * 23 provinces * 4 direct-administered municipalities * 5 autonomous regions * 2 special administrative regions