ISO 3166-2:TZ is the entry for Tanzania 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 Tanzania, ISO 3166-2 codes are defined for 31 regions.

Each code consists of two parts, separated by a hyphen. The first part is , the ISO 3166-1 alpha-2 code of Tanzania. The second part is two digits: 01–25: regions as of early 2000s 26: region created in 2002 27-30: regions created in 2012 31: region created in 2016

Current codes Subdivision names are listed as in the ISO 3166-2 standard published by the ISO 3166 Maintenance Agency (ISO 3166/MA).

ISO 639-1 codes are used to represent subdivision names in the following administrative languages: (sw): Swahili (en): English

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Code Subdivision name (sw) Subdivision name (en) Arusha Dar es Salaam Dodoma Geita Iringa Kagera Kaskazini Pemba Pemba North Kaskazini Unguja Zanzibar North Katavi Kigoma Kilimanjaro Kusini Pemba Pemba South Kusini Unguja Zanzibar South Lindi Manyara Mara Mbeya Mjini Magharibi Zanzibar West Morogoro Mtwara Mwanza Njombe Pwani Coast Rukwa Ruvuma Shinyanga Simiyu Singida Songwe Songwe Tabora Tanga

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 Date issued Description of change in newsletter Code/Subdivision change Addition of one new region. One spelling correction. List source updated. Code source updated Subdivision added: Manyara (sw) Online BrowsingPlatform (OBP) 2014-11-03 Add 4 regions TZ-27 to TZ-30; update List Source Subdivisions added: Geita (sw) Katavi (sw) Njombe (sw) Simiyu (sw) 2018-11-26 Addition of region TZ-31; Update List SourceSubdivision added: Songwe (sw), Songwe (en) 2019-02-14 Modification of the English and French short name lower case

See also Subdivisions of Tanzania FIPS region codes of Tanzania Neighbouring countries: BI, CD, KE, MW, MZ, RW, UG, ZM

External links ISO Online Browsing Platform: TZ Regions of Tanzania, Statoids.com