ISO 3166-2:BT is the entry for Bhutan 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 Bhutan, ISO 3166-2 codes are defined for 20 districts.
Each code consists of two parts, separated by a hyphen. The first part is BT, the ISO 3166-1 alpha-2 code of Bhutan. The second part is two digits, except Gasa and Trashi Yangtse, which use two letters instead. The first digit indicates the zone where the district is in:
Subdivision names are listed as in the ISO 3166-2 standard published by the ISO 3166 Maintenance Agency (ISO 3166/MA).
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| Code | Subdivision name (dz) (National 1997) |
Subdivision name (dz) [note 1] |
|---|---|---|
| BT-33 | Bumthang | བུམ་ཐང་ |
| BT-12 | Chhukha | ཆུ་ཁ་ |
| BT-22 | Dagana | དར་དཀར་ན་ |
| BT-GA | Gasa | མགར་ས་ |
| BT-13 | Haa | ཧཱ་ |
| BT-44 | Lhuentse | ལྷུན་རྩེ་ |
| BT-42 | Monggar | མོང་སྒར་ |
| BT-11 | Paro | སྤ་རོ་ |
| BT-43 | Pema Gatshel | པད་མ་དགའ་ཚལ་ |
| BT-23 | Punakha | སྤུ་ན་ཁ་ |
| BT-45 | Samdrup Jongkhar | བསམ་གྲུབ་ལྗོངས་མཁར |
| BT-14 | Samtse | བསམ་རྩེ་ |
| BT-31 | Sarpang | གསར་སྤང་ |
| BT-15 | Thimphu | ཐིམ་ཕུ་ |
| BT-41 | Trashigang | བཀྲ་ཤིས་སྒང་ |
| BT-TY | Trashi Yangtse | བཀྲ་ཤིས་གྱང་ཙེ་ |
| BT-32 | Trongsa | ཀྲོང་གསར་ |
| BT-21 | Tsirang | རྩི་རང་ |
| BT-24 | Wangdue Phodrang | དབང་འདུས་ཕོ་བྲང་ |
| BT-34 | Zhemgang | གཞམས་སྒང་ |
The following changes to the entry are listed on ISO's online catalogue, the Online Browsing Platform:
| Effective date of change | Short description of change (en) |
|---|---|
| 2014-11-03 | Update List Source |
| 2015-11-27 | Update List Source |
| 2016-11-15 | Change of spelling of BT-13, BT-45; update list source |
| 2018-11-26 | Correction of the romanization system label |
| 2020-11-24 | Change of spelling of BT-43; Update List Source |