29 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. ] :
 |  | NETHERLANDS ANTILLES | (Willemstad) |  | Queen Juliana |  | |
 |  | ARGENTINE | (Buenos Aires a + Olivos r) |  | President Isabel Peron |  | |
 |  | 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 Ernst Brugger | | |
 |  | CHILE | (Santiago of Chile a + Vina del Mar s) |  | General Augusto Pinochet | | |
 |  | WEST GERMANY | (Bonn ar + Karlsruhe d) |  | Bundespresident Walter Scheel | | |
 |  | DENMARK | (Copenhagen) |  | Queen Margaret II | | |
 |  | SPAIN | (Madrid) |  | Caudillo Francisco Franco | | |
 |  | FINLAND | (Helsinki a + Kultaranta s) |  | President Urho Kekkonen | | |
 |  | FRANCE | (Paris) |  | President Valery Giscard d´Estaing | | |
 |  | GREECE | (Athens a) |  | President Phaidon Gizikis | | |
 |  | GUATEMALA | (Guatemala City) |  | President Kjell Eugenio Laugerud Garcia | | |
 |  | IRELAND | (Dublin) |  | President Erskine Hamilton Childers | | |
 |  | ITALY | (Rome a) |  | President Giovanni Leone | | |
 |  | JAPAN | (Tokyo) |  | Emperor Hirohito |  | |
 |  | MOROCCO | (Rabat a) |  | King Hassan II |  | |
 |  | MEXICO | (Mexico City) |  | President Luis Echeverria Alvarez | | |
 |  | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) | | Queen Juliana | | |
 |  | NORWAY | (Oslo) |  | King Olav V | | |
 |  | PORTUGAL | (Lisbon) |  | President Antonio de Spinola | | |
 |  | 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 Richard Nixon | | |
 |  | AUSTRALIA AND NEW ZEALAND | (Melbourne) |  | Frank Dethridge (au) |  | |
 |  | SOUTH AFRICA | (Pretoria ae + Cape Town l + Bloemfontein j) |  | State President Jacobus Johannes Fouche | | |
