31 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 | | |
| | BULGARIA | (Sofia) | | Todor Zhivkov | | |
| | BRAZIL | (Brasilia) | | President Ernesto Geisel | | |
| | CANADA | (Ottawa) | | Queen Elizabeth II | | |
| | ZAIRE | (Kinshasa a) | | President Mobutu Sese Seko | | |
| | CZECHOSLOVAKIA | (Prague a) | | Gustav Husak | | |
| | EAST GERMANY | (East Berlin) | | Willi Stoph | | |
| | WEST GERMANY | (Bonn ar + Karlsruhe d) | | Bundespresident Walter Scheel | | |
| | EGYPT | (Cairo a + Alexandria r) | | President Anwar El-Sadat | | |
| | ETHIOPIA | (Addis Ababa) | | Tafari Benti | | |
| | FRANCE | (Paris) | | President Valery Giscard d´Estaing | | |
| | HUNGARY | (Budapest a) | | Janos Kadar | | |
| | INDIA | (New Delhi a + Simla s + Bolarum w) | | President Fakhruddin Ali Ahmed | | |
| | IRAN | (Tehran) | | Mohammad Reza Shah Pahlavi | | |
| | ITALY | (Rome a) | | President Giovanni Leone | | |
| | JAPAN | (Tokyo) | | Emperor Hirohito | | |
| | MOROCCO | (Rabat a) | | King Hassan II | | |
| | BURMA | (Rangoon a) | | President Ne Win | | |
| | MONGOLIA | (Ulan-Bator) | | Yumjaagiin Tsedenbal | | |
| | MEXICO | (Mexico City) | | President Luis Echeverria Alvarez | | |
| | NIGERIA | (Lagos a) | | Murtala Mohammed | | |
| | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) | | Queen Juliana | | |
| | PERU | (Lima) | | President General Francisco Morales Bermudez | | |
| | PAKISTAN | (Islamabad) | | President Fazal Elahi Chaudhry | | |
| | POLAND | (Warsaw a) | | Edward Gierek | | |
| | ROMANIA | (Bucharest) | | Nicolae Ceausescu | | |
| | SWEDEN | (Stockholm) | | King Charles XVI Gustav | | |
| | SOVIET UNION | (Moscow) | | Leonid Brezhnev | | |
| | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) | | Queen Elizabeth II | | |
| | AMERICA | (Washington-District of Columbia) | | President Gerald Ford | | |
| | YUGOSLAVIA | (Belgrade) | | President Josip Broz Tito | | |