The Statutes of the International Islamic Fiqh Academy stipulate that each Member state of the Organization of Islamic Cooperation shall appoint one active member to represent it in the Academy. It is possible to include more than one active member from a country by decision of the Council of the Academy.

The Council may also include among its members, by decision, those who fulfil the conditions of membership, such as scholars and jurists from Muslim countries and Muslim communities in non-Muslim countries, as well as Islamic organizations that serve the same objectives as the Academy, provided that only one member is nominated from each country, community or organization.

The International Islamic Fiqh Academy has 57 Member states, which are also members of the Organization of Islamic Cooperation.