ISO 3166-2:TN is the entry for Tunisia 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 Tunisia, ISO 3166-2 codes are defined for 24 governorates.
Each code consists of two parts, separated by a hyphen. The first part is TN, the ISO 3166-1 alpha-2 code of Tunisia. The second part is two digits.
Read more about ISO 3166-2:TN: Current Codes, Changes