IARU comprises its Member Societies. There are three Regions in IARU (corresponding to the ITU Regions) and each Region has an Executive Committee. Globally, IARU is led by its Administrative Council.
There can only be one Member Society in each country or separate territory. Applications for membership of IARU should be made on a pro-forma which is available here. Acceptance into members of a new Member Society is subject to a vote by all existing Member Societies.
A Member Society has responsibilities as set out in Article 2 and Bylaws 5 – 9 of the main IARU Constitution
A listing of all IARU Member Societies is available on the IARU worldwide website