30 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 Juan Carlos Ongania |  | |
 |  | AUSTRIA | (Vienna) |  | President Franz Jonas |  | |
 |  | AUSTRALIA | (Canberra) |  | Queen Elizabeth II |  | |
 |  | BELGIUM | (Brussels) |  | King Baudoin I | | |
 |  | BOLIVIA | (Sucre cj + La Paz eir) |  | President Rene Barrientos | | |
 |  | SWITZERLAND | (Berne lq + Lausanne j) |  | President Hans Schaffner | | |
 |  | CHILE | (Santiago of Chile a + Valparaiso l + Vina del Mar s) |  | President Eduardo Frei Montalva | | |
 |  | COLOMBIA | (Bogota) |  | President Carlos Lleras Restrepo | | |
 |  | COSTA RICA | (San Jose) |  | President Jose Joaquin Trejos Fernandez |  | |
 |  | WEST GERMANY | (Bonn ar + Karlsruhe d) |  | Bundespresident Heinrich Luebke | | |
 |  | DENMARK | (Copenhagen) |  | King Frederick IX | | |
 |  | ECUADOR | (San Francisco of Quito) |  | Otto Arosemena Gomez | | |
 |  | SPAIN | (Madrid) |  | Caudillo Francisco Franco | | |
 |  | FRANCE | (Paris) |  | President Charles de Gaulle | | |
 |  | GREECE | (Athens a) |  | King Constantine II | | |
 |  | ISRAEL | (West Jerusalem qu + Tel Aviv-Jaffa in) |  | President Zalman Shazar |  | |
 |  | ITALY | (Rome a) |  | President Giuseppe Saragat | | |
 |  | LUXEMBOURG | (Luxembourg a) |  | Grand Duke Jean | | |
 |  | MALTA | (Valletta a + Attard r + Siggiewi s) |  | Sir Maurice Henry Dorman |  | |
 |  | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) |  | Queen Juliana | | |
 |  | NORWAY | (Oslo) |  | King Olav V | | |
 |  | NEW ZEALAND | (Wellington) | | Queen Elizabeth II | | |
 |  | PANAMA | (Panama City) |  | President Marco Aurelio Robles | | |
 |  | PERU | (Lima) |  | President Fernando Belaunde Terry | | |
 |  | PARAGUAY | (Assumption) |  | President Alfredo Stroessner | | |
 |  | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) | | Queen Elizabeth II | | |
 |  | AMERICA | (Washington-District of Columbia) |  | President Lyndon Baines Johnson | | |
 |  | URUGUAY | (Montevideo) |  | President Alberto Heber Usher | | |
 |  | VENEZUELA | (Caracas) |  | President Raul Leoni | | |
 |  | SOUTH AFRICA | (Pretoria ae + Cape Town l + Bloemfontein j) |  | State President Charles Robberts Swart | | |
