Any organization or formation of a mass character that agrees with the Charter of the League may apply or may be invited to become a member organization of the League.

NOTE: in countries and territories with an ILPS Chapter, please apply directly to the Chapter for membership. There are ILPS Chapters in Argentina, Canada, Colombia, Guatemala, HK-Macao, Indonesia, Mexico, Netherlands, Philippines, Senegal and USA.

According to the ILPS Charter: Section 2. The application shall be evaluated and acted upon by the national chapter as soon as possible after such application is submitted.  In cases where the national chapter does not exist, the International Coordinating Group shall receive and act on the application for membership, subject to approval of the International Coordinating Committee.