Scouting is a global movement with over 40 million members worldwide, all part of National Scout Organizations (NSOs). The role of the NSO is to support and develop Scouting in that country, and facilitate contacts with other NSOs and the World Organization.
To become a member of WOSM, NSOs must gain recognition from the World Scout Conference. There can only be one NSO per country. In the case of a country having more than one National Scout Association (NSA), a federation is formed for the purpose of national coordination and world membership.
There are currently 169 NSOs in the world. The most recent member, Iraq Scout Association, joined on 17 August 2017. Of the 169 NSOs, 135 belong only to WOSM and 34 belong both to WOSM and to The World Association of Girl Guides and Girl Scouts (WAGGGS) and are jointly referred to as SAGNOs (Scout And Guide National Organizations).
Below you can find the membership census as of 31 December 2016. In some countries the National Scout Organization is larger than indicated, as girls and women are members of the World Association of Girl Guides and Girl Scouts (WAGGGS).