ISO 639-2
set of ISO 639 standard / From Wikipedia, the free encyclopedia
ISO 639 is a set of international standards that lists short codes for language names. First there was ISO 639-1. To list more languages, ISO 639-2 was made. Later versions include ISO 639-3 and ISO 639-5.
Each language has a 3 letter code. The list below shows all the codes in ISO 639-2.