41 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 Arturo Frondizi |  | |
 |  | AUSTRIA | (Vienna) |  | President Adolf Schaerf |  | |
 |  | AUSTRALIA | (Canberra) |  | Queen Elizabeth II |  | |
 |  | BELGIUM | (Brussels) |  | King Baudoin I | | |
 |  | BULGARIA | (Sofia) |  | Todor Zhivkov | | |
 |  | BRAZIL | (Brasilia) |  | President Joao Goulart | | |
 |  | CANADA | (Ottawa) | | Queen Elizabeth II |  | |
 |  | SWITZERLAND | (Berne lq + Lausanne j) |  | President Friedrich Traugott Wahlen | | |
 |  | CHILE | (Santiago of Chile a + Valparaiso l + Vina del Mar s) |  | President Jorge Alessandri | | |
 |  | CZECHOSLOVAKIA | (Prague a) |  | Antonin Novotny | | |
 |  | WEST GERMANY | (Bonn ar + Karlsruhe d) |  | Bundespresident Heinrich Luebke | | |
 |  | DENMARK | (Copenhagen) |  | King Frederick IX | | |
 |  | DOMINICAN | (Santo Domingo de Guzman) |  | President Joaquin Balaguer | | |
 |  | ECUADOR | (San Francisco of Quito) |  | President Carlos Julio Arosemena Monroy | | |
 |  | SPAIN | (Madrid) |  | Caudillo Francisco Franco | | |
 |  | FINLAND | (Helsinki a + Kultaranta s) |  | President Urho Kekkonen | | |
 |  | FRANCE | (Paris) |  | President Charles de Gaulle | | |
 |  | HUNGARY | (Budapest a) |  | Janos Kadar | | |
 |  | INDONESIA | (Jakarta a + Bogor r + Chipanas r + Jogjakarta r + Tampaksiring r) |  | President Ahmad Sukarno |  | |
 |  | IRELAND | (Dublin) |  | President Eamon de Valera | | |
 |  | INDIA | (New Delhi a + Simla s + Bolarum w) |  | President Rajendra Prasad | | |
 |  | ITALY | (Rome a) |  | President Giovanni Gronchi | | |
 |  | JAPAN | (Tokyo) |  | Emperor Hirohito | | |
 |  | SOUTH KOREA | (Seoul a) |  | President Yun Po-Sun | | |
 |  | MEXICO | (Mexico City) |  | President Adolfo Lopez Mateos | | |
 |  | NICARAGUA | (Managua) |  | President Luis Somoza Debayle | | |
 |  | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) |  | Queen Juliana | | |
 |  | NORWAY | (Oslo) |  | King Olav V | | |
 |  | PERU | (Lima) |  | President Manuel Prado Ugarteche | | |
 |  | POLAND | (Warsaw a) |  | Wladyslaw Gomulka | | |
 |  | PORTUGAL | (Lisbon) |  | President Americo Thomaz | | |
 |  | RUMANIA | (Bucharest) |  | Gheorghe Gheorghiu-Dej | | |
 |  | SWEDEN | (Stockholm) |  | King Gustav VI Adolphe | | |
 |  | SOVIET UNION | (Moscow) |  | Nikita Khrushchev | | |
 |  | EL SALVADOR | (San Salvador) |  | Civic-Military Directory | | |
 |  | THAILAND | (Bangkok) |  | King Rama IX Bhumibol Adulyadej | | |
 |  | TURKEY | (Ankara a) |  | President Cemal Gursel | | |
 |  | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) | | Queen Elizabeth II | | |
 |  | AMERICA | (Washington-District of Columbia) |  | President John Fitzgerald Kennedy | | |
 |  | URUGUAY | (Montevideo) |  | President Eduardo Victor Haedo | | |
 |  | VENEZUELA | (Caracas) |  | President Romulo Betancourt | | |
