94 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) | | President Sardar Mohammad Daud Khan | | |
| | AFRICAN UNITY | (Addis Ababa) | | SG William Eteki (cm) | | |
| | ARGENTINE | (Buenos Aires a + Olivos r) | | President Isabel Peron | | |
| | AUSTRIA | (Vienna) | | President Rudolf Kirchschlaeger | | |
| | BELGIUM | (Brussels) | | King Baudoin I | | |
| | UPPER VOLTA | (Ouagadougou) | | General Aboubakar Sangoule Lamizana | | |
| | BULGARIA | (Sofia) | | Todor Zhivkov | | |
| | BURUNDI | (Bujumbura) | | President Michel Micombero | | |
| | DAHOMEY | (Porto Novo a + Cotonou ilnqr) | | President Mathieu Kerekou | | |
| | BRAZIL | (Brasilia) | | President Ernesto Geisel | | |
| | BOTSWANA | (Gaborone) | | President Seretse Khama | | |
| | ZAIRE | (Kinshasa a) | | President Mobutu Sese Seko | | |
| | CENTRAL-AFRICAN | (Bangui) | | President Jean-Bedel Bokassa | | |
| | CONGO-BRAZZAVILLE | (Brazzaville a) | | President Marien Ngouabi | | |
| | IVORY COAST | (Abidjan a) | | President Felix Houphouet-Boigny | | |
| | CAMEROON | (Yaounde) | | President Ahmadou Ahidjo | | |
| | COLOMBIA | (Bogota) | | President Alfonso Lopez Michelsen | | |
| | COSTA RICA | (San Jose) | | President Daniel Oduber Quiros | | |
| | CUBA | (Havana) | | Supreme Leader Fidel Castro | | |
| | WEST GERMANY | (Bonn ar + Karlsruhe d) | | Bundespresident Walter Scheel | | |
| | DENMARK | (Copenhagen) | | Queen Margaret II | | |
| | 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) | | King Juan Carlos I | | |
| | ETHIOPIA | (Addis Ababa) | | Tafari Benti | | |
| | FINLAND | (Helsinki a + Kultaranta s) | | President Urho Kekkonen | | |
| | GABON | (Libreville) | | President Omar Bongo | | |
| | GHANA | (Accra) | | President Ignatius Kutu Acheampong | | |
| | GAMBIA | (Banjul) | | President Sir Dawda Jawara | | |
| | GUINEA | (Conakry) | | President Ahmed Sekou Toure | | |
| | EQUATORIAL GUINEA | (Malabo a) | | President Francisco Macias Nguema | | |
| | GREECE | (Athens a) | | President Constantine Tsatsos | | |
| | GUATEMALA | (Guatemala City) | | President Kjell Eugenio Laugerud Garcia | | |
| | HONDURAS | (Tegucigalpa a + Comayaguela c) | | Juan Alberto Melgar Castro | | |
| | HAITI | (Port Au Prince) | | President Jean-Claude Duvalier Baby Doc | | |
| | INDONESIA | (Jakarta a + Bogor r + Chipanas r + Yogyakarta r + Tampaksiring r) | | President Suharto | | |
| | INDIA | (New Delhi a + Simla s + Bolarum w) | | President Fakhruddin Ali Ahmed | | |
| | IRELAND | (Dublin) | | President Cearbhall O. Dalaigh | | |
| | IRAQ | (Baghdad) | | President Ahmad Hassan al-Bakr | | |
| | ITALY | (Rome a) | | President Giovanni Leone | | |
| | JAMAICA | (Kingston) | | Queen Elizabeth II | | |
| | JAPAN | (Tokyo) | | Emperor Hirohito | | |
| | KENYA | (Nairobi) | | President Jomo Kenyatta | | |
| | KUWAIT | (Kuwait City) | | Emir Sheikh Sabah III Al Salim Al Sabah | | |
| | LAOS | (Vientiane a + Luangphrabang r) | | King Savang Vatthana | | |
| | SRI LANKA | (Colombo a + Kandy r) | | President William Gopallawa | | |
| | LESOTHO | (Maseru) | | King Moshoeshoe II | | |
| | LUXEMBOURG | (Luxembourg a) | | Grand Duke Jean | | |
| | MOROCCO | (Rabat a) | | King Hassan II | | |
| | MADAGASCAR | (Tananarive) | | Didier Ratsiraka | | |
| | MALI | (Bamako) | | President Moussa Traore | | |
| | BURMA | (Rangoon a) | | President Ne Win | | |
| | MAURITANIA | (Nouakchott) | | President Moktar Ould Daddah | | |
| | MEXICO | (Mexico City) | | President Luis Echeverria Alvarez | | |
| | MALDIVES | (Male) | | President Ibrahim Nasir | | |
| | MALAWI | (Lilongwe a + Zomba b) | | President Hastings Banda | | |
| | MALAYSIA | (Kuala Lumpur) | | Sultan Yahya Petra | | |
| | NIGER | (Niamey) | | President Seyni Kountche | | |
| | NIGERIA | (Lagos a) | | Murtala Mohammed | | |
| | NICARAGUA | (Managua) | | President Anastasio Somoza Debayle | | |
| | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) | | Queen Juliana | | |
| | NORWAY | (Oslo) | | King Olav V | | |
| | NEPAL | (Kathmandu) | | Maharajah Birendra Bir Bikram Shah Dev | | |
| | PERU | (Lima) | | President General Francisco Morales Bermudez | | |
| | PHILIPPINES | (Quezon City a + Manila lr + Baguio City s) | | President Ferdinand Marcos | | |
| | PAKISTAN | (Islamabad) | | President Fazal Elahi Chaudhry | | |
| | PORTUGAL | (Lisbon) | | President Francisco da Costa Gomes | | |
| | RWANDA | (Kigali) | | President Juvenal Habyarimana | | |
| | SAUDI ARABIA | (Riyadh) | | King Khalid | | |
| | SUDAN | (Khartoum) | | President Gaafar Muhammad Numairy | | |
| | SWEDEN | (Stockholm) | | King Charles XVI Gustav | | |
| | SINGAPORE | (Singapore) | | President Benjamin Henry Sheares | | |
| | SIERRA LEONE | (Freetown) | | President Siaka Stevens | | |
| | SENEGAL | (Dakar) | | President Leopold Sedar Senghor | | |
| | SOMALIA | (Mogadishu) | | President Muhammad Siad Barre | | |
| | SOVIET UNION | (Moscow) | | Leonid Brezhnev | | |
| | SYRIA | (Damascus) | | President Hafez Al-Assad | | |
| | SWAZILAND | (Mbabane aj + Lobamba lr) | | King Sobhuza II | | |
| | CHAD | (Ndjamena) | | Felix Malloum | | |
| | TOGO | (Lome) | | President Gnassingbe Eyadema | | |
| | THAILAND | (Bangkok) | | King Rama IX Bhumibol Adulyadej | | |
| | TUNISIA | (Tunis) | | President Habib Bourguiba | | |
| | TRINIDAD AND TOBAGO | (Port-of-Spain) | | Queen Elizabeth II | | |
| | TANZANIA | (Dar Es Salaam a + Dodoma f) | | President Julius Nyerere | | |
| | UGANDA | (Kampala a + Entebbe r) | | President Idi Amin Dada | | |
| | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) | | Queen Elizabeth II | | |
| | VENEZUELA | (Caracas) | | President Carlos Andres Perez | | |
| | WESTERN SAMOA | (Apia) | | Malietoa Tanumafili II | | |
| | CARICOM | (Georgetown) | | SG Sir Alister McIntyre (gd) | | |
| | NORTH YEMEN | (Sanaa) | | President Ibrahim Muhammad al-Hamadi | | |
| | YUGOSLAVIA | (Belgrade) | | President Josip Broz Tito | | |
| | ZAMBIA | (Lusaka) | | President Kenneth Kaunda | | |