# ISO 3166-2:TW

ISO 3166-2:TW is the entry for Taiwan, "Taiwan, Province of China", or "Taiwan (Province of 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.
ISO 3166-2:TW defines codes for the subdivisions of Taiwan located on the islands of Taiwan (Formosa), Penghu (Pescadores), Kinmen, Matsu (Lienchiang), and their subsidiary islands. These areas are de facto under the administration of the government of the Republic of China which resides in Taipei. The government of the People's Republic of China, which resides in Beijing, also claims these islands but considers ROC-held Fujian islands of Kinmen and Matsu to be within its Fujian Province, not its nominal Taiwan Province (ISO 3166-2 code: CN-TW).
Currently ISO 3166-2:TW lists 13 counties, three cities and six special municipalities. Constitutionally the counties and cities are part of the ROC provinces of Taiwan and Fujian, but since the provincial governments were largely streamlined in 1998 these 22 subdivisions are regarded as the principal subdivisions of Republic of China (Taiwan).

## Format

* Each code consists of two parts, separated by a hyphen. The first part is TW, the ISO 3166-1 alpha-2 code of Taiwan. The second part is three letters.
* The divisions in the list are categorized in three types:
** Cities: Romanized as shih (市) and formerly called "municipalities" in ISO 3166-2. The divisions carry City (市) in their official names.
** Counties: Romanized as hsien (縣) and formerly called "districts" in ISO 3166-2. The divisions carry County (縣) in their official names.
** Special municipalities: Romanized as chih-hsia-shih (直轄市). The divisions also carry City (市) in their official names.
* Taiwan is currently assigned the ISO 3166-2 code CN-TW under ISO 3166-2:CN, as China solely claims it as a province of China.

## Current codes

Subdivision names are listed as in the ISO 3166-2 standard published by the ISO 3166 Maintenance Agency (ISO 3166/MA).
| Code | Subdivision name (zh) (conventional names) | Subdivision name (zh) | Subdivision category |
| TW-CHA | Changhua | 彰化 | county |
| TW-CYI | Chiayi | 嘉義 | city |
| TW-CYQ | Chiayi | 嘉義 | county |
| TW-HSZ | Hsinchu | 新竹 | city |
| TW-HSQ | Hsinchu | 新竹 | county |
| TW-HUA | Hualien | 花蓮 | county |
| TW-KHH | Kaohsiung | 高雄 | special municipality |
| TW-KEE | Keelung | 基隆 | city |
| TW-KIN | Kinmen | 金門 | county |
| TW-LIE | Lienchiang | 連江 | county |
| TW-MIA | Miaoli | 苗栗 | county |
| TW-NAN | Nantou | 南投 | county |
| TW-NWT | New Taipei | 新北 | special municipality |
| TW-PEN | Penghu | 澎湖 | county |
| TW-PIF | Pingtung | 屏東 | county |
| TW-TXG | Taichung | 臺中 | special municipality |
| TW-TNN | Tainan | 臺南 | special municipality |
| TW-TPE | Taipei | 臺北 | special municipality |
| TW-TTT | Taitung | 臺東 | county |
| TW-TAO | Taoyuan | 桃園 | special municipality |
| TW-ILA | Yilan | 宜蘭 | county |
| TW-YUN | Yunlin | 雲林 | county |

### Notes

* ↑ For reference only, Chinese name in Chinese script not included in the ISO 3166-2 standard.

## Changes

The following changes to the entry have been announced by the ISO 3166/MA since the first publication of ISO 3166-2 in 1998. ISO stopped issuing newsletters in 2013.
| Newsletter/OBP | Date issued | Description of change in newsletter | Code/Subdivision change |
| Newsletter I-4 | 2002-12-10 | Error correction: Duplicate use of six code elements corrected. Subdivision categories in header re-sorted | Codes: (to correct duplicate use) Chiayi (district): TW-CYI → TW-CYQ Hsinchu (district): TW-HSZ → TW-HSQ Kaohsiung (district): TW-KHH → TW-KHQ Taichung (district): TW-TXG → TW-TXQ Tainan (district): TW-TNN → TW-TNQ Taipei (district): TW-TPE → TW-TPQ |
| Online Browsing Platform (OBP) | 2015-11-27 | Addition of category name for special municipality in zho; change of spelling of TW-ILA; deletion of districts TW-KHQ, TW-TNQ, TW-TPQ, TW-TXQ; addition of districts TW-KIN, TW-LIE and special municipality TW-NWT; change of subdivision category from municipalities to special municipalities for TW-TXG, TW-TNN; change of subdivision category from district to special municipality for TW-TAO; update List Source. | Subdivision added: Kinmen (district): TW-KIN Lienchiang (district): TW-LIE New Taipei (special municipality): TW-NWT Subdivision deleted: Kaohsiung (district): TW-KHQ Tainan (district): TW-TNQ Taipei (district): TW-TPQ Taichung (district): TW-TXQ Subdivision category changed: Taoyuan (TW-TAO): district → special municipality Tainan (TW-TNN): municipality → special municipality Taichung (TW-TXG): municipality → special municipality |
| Online Browsing Platform (OBP) | 2016-11-15 | Change of subdivision category from municipality to city and district to county; update List Source | (each) district → county (each) municipality → city |