ISO 3166 Maintenance agency
(ISO 3166/MA)
ISO's focal point for country codes

The existence of various country codes developed by different organizations can be confusing if you exchange goods or information in our ever more integrated world. To make sure that communication works you need an accepted, up-to-date country code standard.

ISO 3166, Codes for the representation of names of countries and their subdivisions (Parts 1, 2 and 3) is this commonly accepted International Standard and the ISO 3166/MA has been updating it since 1974.

Browse through the pages on our Web site to:

• Learn that even without knowing it you are benefitting from ISO 3166
  
  
• Find the country codes in the ISO 3166-1 decoding table
  
  
• Download lists of country names and code elements
  
  
• Buy ISO 3166 databases
  
  
• View updates
  
  
• See how ISO 3166 works
  
  

Read the FAQs for specific questions or contact the ISO 3166/MA Secretariat.