Organisation for the Prohibition of Chemical Weapons | Commonwealth Scientific and Industrial Research Organisation | Organisation of African Unity | Organisation for Economic Co-operation and Development | Agence de Coopération Culturelle et Technique | Islamic calendar | Asia-Pacific Economic Cooperation | Cooperation Council for the Arab States of the Gulf | Rank Organisation | Islamic Golden Age | British Darts Organisation | International Islamic University Malaysia | Islamic fundamentalism | Indian Space Research Organisation | Defence Science and Technology Organisation | Army of the Guardians of the Islamic Revolution | Polish Military Organisation | Organisation Todt | Islamic Studies | Islamic art | Islamic architecture | Economic Cooperation Organization | United Malays National Organisation | Organisation of Eastern Caribbean States | Islamic studies | Islamic Republic of Iran Broadcasting | Islamic philosophy | Islamic Azad University | European Patent Organisation | Patent Cooperation Treaty |
It has three official languages—Comorian (Shikomor), Arabic, and French, and it is the only state to be a member of each of the African Union, Francophonie, Organisation of Islamic Cooperation, Arab League, and Indian Ocean Commission, among other international organizations.