52 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 Roberto Marcelo Levingston |  | |
 |  | AUSTRIA | (Vienna) |  | President Franz Jonas |  | |
 |  | AUSTRALIA | (Canberra) |  | Queen Elizabeth II |  | |
 |  | BELGIUM | (Brussels) |  | King Baudoin I | | |
 |  | UPPER VOLTA | (Ouagadougou) |  | General Aboubakar Sangoule Lamizana |  | |
 |  | BULGARIA | (Sofia) |  | Todor Zhivkov | | |
 |  | DAHOMEY | (Porto Novo a + Cotonou ilnqr) |  | President Hubert Maga | | |
 |  | CANADA | (Ottawa) | | Queen Elizabeth II |  | |
 |  | CONGO-BRAZZAVILLE | (Brazzaville a) |  | President Marien Ngouabi | | |
 |  | SWITZERLAND | (Berne lq + Lausanne j) |  | President Hans Peter Tschudi | | |
 |  | IVORY COAST | (Abidjan a) |  | President Felix Houphouet-Boigny | | |
 |  | CAMEROON | (Yaounde) |  | President Ahmadou Ahidjo | | |
 |  | CZECHOSLOVAKIA | (Prague a) |  | Gustav Husak | | |
 |  | CUBA | (Havana) |  | Supreme Leader Fidel Castro | | |
 |  | WEST GERMANY | (Bonn ar + Karlsruhe d) |  | Bundespresident Gustav Heinemann | | |
 |  | DENMARK | (Copenhagen) |  | King Frederick IX | | |
 |  | ALGERIA | (Algiers a + El Biar d + El Mouradia r) |  | President Houari Boumedienne | | |
 |  | UNITED ARAB | (Cairo a + Alexandria r) |  | President Gamal Abdel Nasser | | |
 |  | SPAIN | (Madrid) |  | Caudillo Francisco Franco | | |
 |  | FINLAND | (Helsinki a + Kultaranta s) |  | President Urho Kekkonen | | |
 |  | FRANCE | (Paris) |  | President Georges Pompidou | | |
 |  | GABON | (Libreville) |  | President Albert-Bernard Bongo | | |
 |  | GUINEA | (Conakry) |  | President Ahmed Sekou Toure | | |
 |  | GREECE | (Athens a) |  | Regent George Zoitakis | | |
 |  | HUNGARY | (Budapest a) |  | Janos Kadar | | |
 |  | IRELAND | (Dublin) |  | President Eamon de Valera | | |
 |  | ISRAEL | (West Jerusalem qu + Tel Aviv-Jaffa in) |  | President Zalman Shazar |  | |
 |  | INDIA | (New Delhi a + Simla s + Bolarum w) |  | President Varahagiri Venkata Giri | | |
 |  | ITALY | (Rome a) |  | President Giuseppe Saragat | | |
 |  | JORDAN | (Amman) |  | King Hussein I | | |
 |  | JAPAN | (Tokyo) |  | Emperor Hirohito | | |
 |  | SOUTH KOREA | (Seoul a) |  | President Park Chung-Hee | | |
 |  | MOROCCO | (Rabat a) |  | King Hassan II | | |
 |  | MADAGASCAR | (Tananarive) |  | President Philibert Tsiranana | | |
 |  | NIGER | (Niamey) |  | President Hamani Diori | | |
 |  | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) |  | Queen Juliana | | |
 |  | NORWAY | (Oslo) |  | King Olav V | | |
 |  | NEW ZEALAND | (Wellington) | | Queen Elizabeth II | | |
 |  | POLAND | (Warsaw a) |  | Wladyslaw Gomulka | | |
 |  | ROMANIA | (Bucharest) |  | Nicolae Ceausescu | | |
 |  | SAUDI ARABIA | (Riyadh) |  | King Faisal | | |
 |  | SUDAN | (Khartoum) |  | Gaafar Muhammad Numairy | | |
 |  | SWEDEN | (Stockholm) |  | King Gustav VI Adolphe | | |
 |  | SOVIET UNION | (Moscow) |  | Leonid Brezhnev | | |
 |  | CHAD | (Fort Lamy) |  | President Francois Tombalbaye | | |
 |  | TOGO | (Lome) |  | President Etienne Eyadema | | |
 |  | TUNISIA | (Tunis) |  | President Habib Bourguiba | | |
 |  | TURKEY | (Ankara a) |  | President Cevdet Sunay | | |
 |  | CHINA-TAIWAN | (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 | | |
 |  | YUGOSLAVIA | (Belgrade) |  | President Josip Broz Tito | | |
