Membership of ICLA is currently limited to 100 individuals and is by invitation, after a nomination and qualification process.
1. Number Members: Those that in a maximum number of one hundred are admitted to the Academy
2. Perpetual Members: Those that acquire the category of perpetual members are all the Number Members and/or Founding Members that have reached 80 years of age. The number of Perpetual Members is unlimited and does not occupy a numbered place. The Perpetual Members will be entitled to a voice and vote in the Academy assemblies.
3. Founding Members: The Academy Founding Members are those who have undersigned the Constitution Act in accordance to what is established by the Bylaws.
The ICLA currently includes 89 members from 21 countries in the Americas, Europe, and the Pacific region.