Two categories of ISO members participate in the technical work:

Member bodies

A member body of ISO is the national body "most representative of standardization in its country". Only one such body for each country is accepted for membership of ISO. Member bodies are entitled to participate and exercise full voting rights on any technical committee and policy committee of ISO.

Correspondent members

A correspondent member is usually an organization in a country which does not yet have a fully-developed national standards activity. Correspondent members do not take an active part in the technical and policy development work, but are entitled to be kept fully informed about the work of interest to them

Listing by country

Listing by acronym

NOTES:
Where a blank field is returned against the selected ISO member, this is an indication that the member in question does not participate in the technical work of any committee.