ISO 3166-2:CO is the entry for Colombia 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, states or departments) of all countries coded in ISO 3166-1.
Each code consists of two parts, separated by a hyphen. The first part is CO, the ISO 3166-1 alpha-2 code of Colombia. The second part is either of the following:
- two letters: capital district
- three letters: departments