ISO 3166-2:GR

ISO 3166-2:GR is the entry for Greece in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization which defines codes for the names of the principal subdivisions of all countries coded in ISO 3166-1.
Currently for Greece, ISO 3166-2 codes are defined for two categories of subdivisions:

The departments were abolished in 2011, and were replaced approximately by regional units. The regional units were deleted from the entry in 2016.
Each code consists of two parts, separated by a hyphen. The first part is, the ISO 3166-1 alpha-2 code of Greece. The second part is either of the following:

one letter : administrative regions
two digits: self-governed part

WWW iso.org/obp/ui/#iso:code:...

Current codes

Subdivision names are listed as in the ISO 3166-2 standard published by the ISO 3166 Maintenance Agency.
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Administrative regions

; Notes

Changes

The following changes to the entry have been announced in newsletters by the ISO 3166/MA since the first publication of ISO 3166-2 in 1998:

Newsletter	Date issued	Description of change in newsletter	Code/Subdivision change
	'	Addition of the country code prefix as the first code element, reallocation of 3166-2 alpha-2 codes to avoid duplication, addition of names in administrative languages	Codes: format changed '

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
2019-11-22	Grammar correction of GR-J, GR-K, GR-L
2018-11-26	Correction of the romanization system label
2016-11-15	Change of spelling of GR-M; deletion of subdivision category department; deletion of departments GR-01, GR-11, GR-12, GR-31, GR-A1, GR-64, GR-94, GR-85, GR-81, GR-52, GR-71, GR-05, GR-04, GR-63, GR-07, GR-06, GR-51, GR-14, GR-53, GR-33, GR-91, GR-41, GR-56, GR-55, GR-23, GR-22, GR-57, GR-15, GR-58, GR-82, GR-16, GR-42, GR-92, GR-24, GR-83, GR-43, GR-07, GR-59, GR-61, GR-34, GR-93, GR-73, GR-84, GR-62, GR-32, GR-54, GR-44, GR-03, GR-72, GR-21; update list source
2015-11-27	Change of the local short name
2014-10-30	Correct spelling of GR-01, GR-81, GR-23, GR-93, GR-69; correct diacritic marks; update List Source
2010-02-19	Addition of the country code prefix as the first code element, reallocation of 3166-2 alpha-2 codes to avoid duplication, addition of names in administrative languages
2020-03-02	Typographical correction of subdivision name of GR-J