List of ISO 639 language codes

ISO 639 is a standardized nomenclature used to classify languages.^[1] Each language is assigned a two-letter (set 1) and three-letter lowercase abbreviation (sets 2–5).^[2] Part 1 of the standard, ISO 639-1 defines the two-letter codes, and Part 3 (2007), ISO 639-3, defines the three-letter codes, aiming to cover all known natural languages, largely superseding the ISO 639-2 three-letter code standard.

^ "ISO 639:2023 Code for individual languages and language groups". International Organization for Standardization. 2023-11-01. Retrieved 2023-12-17. This document specifies the ISO 639 language code and establishes the harmonized terminology and general principles of language coding.
^ "Access to the databases of the ISO 639 Language Code" (PDF). International Organization for Standardization. 2023-04-14. Retrieved 2023-12-17.

[1] "ISO 639:2023 Code for individual languages and language groups". International Organization for Standardization. 2023-11-01. Retrieved 2023-12-17. This document specifies the ISO 639 language code and establishes the harmonized terminology and general principles of language coding.

[2] "Access to the databases of the ISO 639 Language Code" (PDF). International Organization for Standardization. 2023-04-14. Retrieved 2023-12-17.

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