Countries in the International Organization for Standardization

This article is about ISO member countries. For the ISO standard for countries, see ISO 3166-1.

There are, as of 2026, 175 members of the International Organization for Standardization. Three types of membership status can be distinguished:

  • Full member (member body): sets the course for ISO standards development and strategy: participates and votes in ISO technical and policy meetings; sells and adopts ISO standards nationally.
  • Correspondent member: attends ISO technical and policy meetings as an observer; sells and adopts ISO standards nationally or within their membership territory.
  • Subscriber member: keeps up to date with ISO’s work, but cannot participate in it; does not sell or adopt ISO standards nationally.
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