Hashtags for all economic activities & functions of government in a convenient e-book


This codelist defined by International Organization for Standardization (ISO) defines two and three letter language identifiers for most languages of the world.

For over 660 languages you can look up the two or three letter code at Languages: codes and countries.

In addition to the role of ISO 3166 country codes, the ISO 639 language codes also play a key role in the #tagcoding digital skill:

  • It is added to #CPC hashtags to support the online debate and content sharing about any product or service section, division, group, class and sub-class of the Central Product Classification (CPC) Version 2.1.
  • The #xy2wiki portfolio is defined using ISO 639 language codes. For each language the #xy2wiki hashtag denotes the campaign to create online public sphere content in the language for the countries where the language is spoken.