60 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 Isabel Peron | | |
| | 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 Pierre Graber | | |
| | CHILE | (Santiago of Chile a + Vina del Mar s) | | General Augusto Pinochet | | |
| | CHINA | (Peking) | | Mao Tse-Tung the Great Helmsman | | |
| | COLOMBIA | (Bogota) | | President Alfonso Lopez Michelsen | | |
| | CZECHOSLOVAKIA | (Prague a) | | Gustav Husak | | |
| | CUBA | (Havana) | | Supreme Leader Fidel Castro | | |
| | CYPRUS | (Nicosia) | | President Archbishop Makarios III | | |
| | WEST GERMANY | (Bonn ar + Karlsruhe d) | | Bundespresident Walter Scheel | | |
| | DENMARK | (Copenhagen) | | Queen Margaret II | | |
| | 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 Valery Giscard d´Estaing | | |
| | GREECE | (Athens a) | | President Michael Stasinopoulos | | |
| | GUATEMALA | (Guatemala City) | | President Kjell Eugenio Laugerud Garcia | | |
| | HUNGARY | (Budapest a) | | Janos Kadar | | |
| | INDONESIA | (Jakarta a + Bogor r + Chipanas r + Yogyakarta r + Tampaksiring r) | | President Suharto | | |
| | IRELAND | (Dublin) | | President Cearbhall O. Dalaigh | | |
| | ISRAEL | (West Jerusalem qru + Tel Aviv-Jaffa in) | | President Ephraim Katzir | | |
| | INDIA | (New Delhi a + Simla s + Bolarum w) | | President Fakhruddin Ali Ahmed | | |
| | IRAN | (Tehran) | | Mohammad Reza Shah Pahlavi | | |
| | ICELAND | (Reykjavik a + Alftanes r) | | President Kristjan Eldjarn | | |
| | ITALY | (Rome a) | | President Giovanni Leone | | |
| | JAPAN | (Tokyo) | | Emperor Hirohito | | |
| | NORTH KOREA | (Pyongyang a) | | Kim Il-Sung | | |
| | 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 | | |
| | LUXEMBOURG | (Luxembourg a) | | Grand Duke Jean | | |
| | LIBYA | (Tripoli a) | | Guide Muammar Gaddafi | | |
| | 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 | | |
| | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) | | Queen Juliana | | |
| | NORWAY | (Oslo) | | King Olav V | | |
| | NEW ZEALAND | (Wellington) | | Queen Elizabeth II | | |
| | PERU | (Lima) | | President Juan Velasco Alvarado | | |
| | PHILIPPINES | (Quezon City a + Manila lr + Baguio City s) | | President Ferdinand Marcos | | |
| | PAKISTAN | (Islamabad) | | President Fazal Elahi Chaudhry | | |
| | POLAND | (Warsaw a) | | Edward Gierek | | |
| | PORTUGAL | (Lisbon) | | President Francisco da Costa Gomes | | |
| | ROMANIA | (Bucharest) | | Nicolae Ceausescu | | |
| | SWEDEN | (Stockholm) | | King Charles XVI Gustav | | |
| | SAN MARINO | (San Marino) | | Captains Regent | | |
| | SOVIET UNION | (Moscow) | | Leonid Brezhnev | | |
| | 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 Gerald Ford | | |
| | VENEZUELA | (Caracas) | | President Carlos Andres Perez | | |
| | YUGOSLAVIA | (Belgrade) | | President Josip Broz Tito | | |
| | SOUTH AFRICA | (Pretoria ae + Cape Town l + Bloemfontein j) | | State President Nicolaas Johannes Diederichs | | |