ISO 3166-2:KR is the entry for South Korea (officially the Republic of Korea) 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 South Korea, ISO 3166-2 codes are defined for 1 special city, 6 metropolitan cities, 7 provinces, 2 special self-governing provinces, and 1 special self-governing city. All of them are province-level subdivisions.
Each code consists of two parts, separated by a hyphen. The first part is KR, the ISO 3166-1 alpha-2 code of South Korea. The second part is two digits: