Definition of Iso 639

ISO 639 consists of different parts, of which two parts have been approved and a third part that is in the final approval (FDIS) stage. The other parts are works in progress.

• ISO 639-1: 2002 Codes for the representation of names of languages -- Part 1: Alpha-2 code List of ISO 639-1 codes
• ISO 639-2: 1998 Codes for the representation of names of languages -- Part 2: Alpha-3 code List of ISO 639-2 codes
• ISO 639-3: 2007 Codes for the representation of names of languages -- Part 3: Alpha-3 code for comprehensive coverage of languages List of ISO 639-3 codes
• ISO/CD 639-4: 2007? Codes for the representation of names of languages -- Part 4: Implementation guidelines and general principles for language coding
• ISO/DIS 639-5: 2007? Codes for the representation of names of languages -- Part 5: Alpha-3 code for language families and groups
• ISO/CD 639-6: 2007? Codes for the representation of names of languages -- Part 6: Alpha-4 representation for comprehensive coverage of language variation