47 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. ] :
| | ARGENTINE | (Buenos Aires a + Olivos r) | | President Jorge Rafael Videla | | |
| | AUSTRIA | (Vienna) | | President Rudolf Kirchschlaeger | | |
| | AUSTRALIA | (Canberra) | | Queen Elizabeth II | | |
| | BELGIUM | (Brussels) | | King Baudoin I | | |
| | BULGARIA | (Sofia) | | Todor Zhivkov | | |
| | BRAZIL | (Brasilia) | | President Ernesto Geisel | | |
| | CANADA | (Ottawa) | | Queen Elizabeth II | | |
| | SWITZERLAND | (Berne lq + Lausanne j) | | President Kurt Furgler | | |
| | CHILE | (Santiago of Chile a + Vina del Mar s) | | General Augusto Pinochet | | |
| | CAMEROON | (Yaounde) | | President Ahmadou Ahidjo | | |
| | CHINA | (Peking) | | Hua Kuo-Feng | | |
| | CZECHOSLOVAKIA | (Prague a) | | Gustav Husak | | |
| | WEST GERMANY | (Bonn ar + Karlsruhe d) | | Bundespresident Walter Scheel | | |
| | DENMARK | (Copenhagen) | | Queen Margaret II | | |
| | DOMINICAN | (Santo Domingo de Guzman) | | President Joaquin Balaguer | | |
| | ECUADOR | (San Francisco of Quito) | | Alfredo Poveda | | |
| | EGYPT | (Cairo a + Alexandria r) | | President Anwar El-Sadat | | |
| | SPAIN | (Madrid) | | King Juan Carlos I | | |
| | FINLAND | (Helsinki a + Kultaranta s) | | President Urho Kekkonen | | |
| | FRANCE | (Paris) | | President Valery Giscard d´Estaing | | |
| | HUNGARY | (Budapest a) | | Janos Kadar | | |
| | INDONESIA | (Jakarta a + Bogor r + Chipanas r + Yogyakarta r + Tampaksiring r) | | President Suharto | | |
| | IRELAND | (Dublin) | | President Patrick John Hillery | | |
| | INDIA | (New Delhi a + Simla s + Bolarum w) | | President Neelam Sanjiva Reddy | | |
| | IRAN | (Tehran) | | Mohammad Reza Shah Pahlavi | | |
| | ITALY | (Rome a) | | President Giovanni Leone | | |
| | JAPAN | (Tokyo) | | Emperor Hirohito | | |
| | SOUTH KOREA | (Seoul a) | | President Park Chung-Hee | | |
| | MEXICO | (Mexico City) | | President Jose Lopez Portillo | | |
| | NICARAGUA | (Managua) | | President Anastasio Somoza Debayle | | |
| | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) | | Queen Juliana | | |
| | NORWAY | (Oslo) | | King Olav V | | |
| | PERU | (Lima) | | President General Francisco Morales Bermudez | | |
| | PAKISTAN | (Islamabad) | | President Fazal Elahi Chaudhry | | |
| | POLAND | (Warsaw a) | | Edward Gierek | | |
| | PORTUGAL | (Lisbon) | | President Antonio Ramalho Eanes | | |
| | ROMANIA | (Bucharest) | | Nicolae Ceausescu | | |
| | SWEDEN | (Stockholm) | | King Charles XVI Gustav | | |
| | SOVIET UNION | (Moscow) | | Leonid Brezhnev | | |
| | EL SALVADOR | (San Salvador) | | President Carlos Humberto Romero | | |
| | THAILAND | (Bangkok) | | King Rama IX Bhumibol Adulyadej | | |
| | TURKEY | (Ankara a) | | President Fahri Koruturk | | |
| | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) | | Queen Elizabeth II | | |
| | AMERICA | (Washington-District of Columbia) | | President Jimmy Carter | | |
| | URUGUAY | (Montevideo) | | President Aparicio Mendez | | |
| | VENEZUELA | (Caracas) | | President Carlos Andres Perez | | |
| | SOUTH AFRICA | (Pretoria ae + Cape Town l + Bloemfontein j) | | State President Nicolaas Johannes Diederichs | | |