72 Members (excluding the associate or suspended members but including the countries represented on their behalf) [The rulers are not necessarily the representatives in the organisation. ] :
 |  | UNITED ARAB EMIRATES | (Abu Dhabi ar + Al Karama f) |  | President Sheikh Zayed II bin Sultan Al Nahyan |  | |
 |  | AFGHANISTAN | (Kabul) |  | King Mohammad Zahir Shah | | |
 |  | ARGENTINE | (Buenos Aires a + Olivos r) |  | President Hector Jose Campora |  | |
 |  | AUSTRIA | (Vienna) |  | President Franz Jonas |  | |
 |  | AUSTRALIA | (Canberra) |  | Queen Elizabeth II |  | |
 |  | BENGLADESH | (Dacca a) |  | President Abu Sayeed Chowdhury | | |
 |  | BELGIUM | (Brussels) |  | King Baudoin I | | |
 |  | UPPER VOLTA | (Ouagadougou) |  | General Aboubakar Sangoule Lamizana |  | |
 |  | BAHRAIN | (Manamah) |  | Emir Sheikh Isa II bin Salman Al Khalifah | | |
 |  | BOLIVIA | (Sucre cj + La Paz eir) |  | President Hugo Banzer | | |
 |  | BRAZIL | (Brasilia) |  | President Emilio Garrastazu Medici | | |
 |  | CANADA | (Ottawa) | | Queen Elizabeth II |  | |
 |  | SWITZERLAND | (Berne lq + Lausanne j) |  | President Roger Bonvin | | |
 |  | CHILE | (Santiago of Chile a + Valparaiso l + Vina del Mar s) |  | President Salvador Allende | | |
 |  | CAMEROON | (Yaounde) |  | President Ahmadou Ahidjo | | |
 |  | COLOMBIA | (Bogota) |  | President Misael Pastrana Borrero | | |
 |  | COSTA RICA | (San Jose) |  | President Jose Figueres Ferrer | | |
 |  | CUBA | (Havana) |  | Supreme Leader Fidel Castro | | |
 |  | CYPRUS | (Nicosia) |  | President Archbishop Makarios III | | |
 |  | WEST GERMANY | (Bonn ar + Karlsruhe d) |  | Bundespresident Gustav Heinemann | | |
 |  | DENMARK | (Copenhagen) |  | Queen Margaret II | | |
 |  | DOMINICAN | (Santo Domingo de Guzman) |  | President Joaquin Balaguer | | |
 |  | ALGERIA | (Algiers a + El Biar d + El Mouradia r) |  | President Houari Boumedienne | | |
 |  | ECUADOR | (San Francisco of Quito) |  | President General Guillermo Rodriguez Lara | | |
 |  | EGYPT | (Cairo a + Alexandria r) |  | President Anwar El-Sadat | | |
 |  | SPAIN | (Madrid) |  | Caudillo Francisco Franco | | |
 |  | FINLAND | (Helsinki a + Kultaranta s) |  | President Urho Kekkonen | | |
 |  | FRANCE | (Paris) |  | President Georges Pompidou | | |
 |  | GHANA | (Accra) |  | General Ignatius Kutu Acheampong | | |
 |  | GREECE | (Athens a) |  | President George Papadopoulos | | |
 |  | GUATEMALA | (Guatemala City) |  | President Carlos Manuel Arana Osorio | | |
 |  | INDONESIA | (Jakarta a + Bogor r + Chipanas r + Yogyakarta r + Tampaksiring r) |  | President Suharto | | |
 |  | IRELAND | (Dublin) |  | President Eamon de Valera | | |
 |  | ISRAEL | (West Jerusalem qru + Tel Aviv-Jaffa in) |  | President Ephraim Katzir | | |
 |  | INDIA | (New Delhi a + Simla s + Bolarum w) |  | President Varahagiri Venkata Giri | | |
 |  | IRAN | (Tehran) |  | Mohammad Reza Shah Pahlavi | | |
 |  | ITALY | (Rome a) |  | President Giovanni Leone | | |
 |  | JORDAN | (Amman) |  | King Hussein I | | |
 |  | JAPAN | (Tokyo) |  | Emperor Hirohito | | |
 |  | KENYA | (Nairobi) |  | President Jomo Kenyatta | | |
 |  | SOUTH KOREA | (Seoul a) |  | President Park Chung-Hee | | |
 |  | KUWAIT | (Kuwait City) |  | Emir Sheikh Sabah III Al Salim Al Sabah | | |
 |  | LEBANON | (Beirut a + Baabda r) |  | President Suleiman Frangieh | | |
 |  | SRI LANKA | (Colombo a + Kandy r) |  | President William Gopallawa | | |
 |  | LUXEMBOURG | (Luxembourg a) |  | Grand Duke Jean | | |
 |  | MOROCCO | (Rabat a) |  | King Hassan II | | |
 |  | MONACO | (Monaco q) |  | Prince Rainier III | | |
 |  | MEXICO | (Mexico City) |  | President Luis Echeverria Alvarez | | |
 |  | MALAYSIA | (Kuala Lumpur) |  | Sultan Abdul Halim Muadzam Shah | | |
 |  | NIGERIA | (Lagos a) |  | Yakubu Gowon | | |
 |  | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) |  | Queen Juliana | | |
 |  | NORWAY | (Oslo) |  | King Olav V | | |
 |  | NEW ZEALAND | (Wellington) | | Queen Elizabeth II | | |
 |  | PANAMA | (Panama City) |  | Supreme Leader General Omar Torrijos Herrera | | |
 |  | PERU | (Lima) |  | President Juan Velasco Alvarado | | |
 |  | PHILIPPINES | (Quezon City a + Manila lr + Baguio City s) |  | President Ferdinand Marcos | | |
 |  | PAKISTAN | (Islamabad) |  | President Zulfikar Ali Bhutto | | |
 |  | PORTUGAL | (Lisbon) |  | President Americo Thomaz | | |
 |  | PARAGUAY | (Assumption) |  | President Alfredo Stroessner | | |
 |  | QATAR | (Doha) |  | Emir Sheikh Khalifah bin Hamad Al Thani | | |
 |  | ROMANIA | (Bucharest) |  | Nicolae Ceausescu | | |
 |  | SAUDI ARABIA | (Riyadh) |  | King Faisal | | |
 |  | SWEDEN | (Stockholm) |  | King Gustav VI Adolphe | | |
 |  | SINGAPORE | (Singapore) |  | President Benjamin Henry Sheares | | |
 |  | SYRIA | (Damascus) |  | President Hafez Al-Assad | | |
 |  | THAILAND | (Bangkok) |  | King Rama IX Bhumibol Adulyadej | | |
 |  | TURKEY | (Ankara a) |  | President Fahri Koruturk | | |
 |  | CHINA-TAIPEH | (Taipeh t) |  | President Chiang Kai-Shek | | |
 |  | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) | | Queen Elizabeth II | | |
 |  | AMERICA | (Washington-District of Columbia) |  | President Richard Nixon | | |
 |  | VENEZUELA | (Caracas) |  | President Rafael Caldera | | |
 |  | SOUTH AFRICA | (Pretoria ae + Cape Town l + Bloemfontein j) |  | State President Jacobus Johannes Fouche | | |
