48 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 Peron | | |
| | AUSTRIA | (Vienna) | | President Theodor Koerner | | |
| | BELGIUM | (Brussels) | | King Baudoin I | | |
| | BULGARIA | (Sofia) | | Vulko Chervenkov | | |
| | BOLIVIA | (Sucre cj + La Paz eir) | | President Victor Paz Estenssoro | | |
| | BRAZIL | (Rio de Janeiro) | | President Getulio Vargas | | |
| | SWITZERLAND | (Berne lq + Lausanne j) | | President Philipp Etter | | |
| | CHILE | (Santiago of Chile a + Valparaiso l + Vina del Mar s) | | President Carlos Ibanez del Campo | | |
| | COLOMBIA | (Bogota) | | President Laureano Gomez | | |
| | CZECHOSLOVAKIA | (Prague a) | | Antonin Novotny | | |
| | CUBA | (Havana) | | Fulgencio Batista | | |
| | WEST GERMANY | (Bonn ar + Karlsruhe d) | | Bundespresident Theodor Heuss | | |
| | DENMARK | (Copenhagen) | | King Frederick IX | | |
| | DOMINICAN | (Ciudad Trujillo) | | Generalissimo Rafael Leonidas Trujillo | | |
| | ECUADOR | (San Francisco of Quito) | | President Jose Maria Velasco Ibarra | | |
| | SPAIN | (Madrid) | | Caudillo Francisco Franco | | |
| | FINLAND | (Helsinki a + Kultaranta s) | | President Juho Kusti Paasikivi | | |
| | FRENCH UNION | (Paris) | | President Vincent Auriol | | |
| | GREECE | (Athens a) | | King Paul I | | |
| | GUATEMALA | (Guatemala City) | | President Juan Jacobo Arbenz Guzman | | |
| | HAITI | (Port Au Prince) | | President Nemours Pierre-Louis | | |
| | HUNGARY | (Budapest a) | | Matyas Rakosi | | |
| | INDIA | (New Delhi a + Simla s + Bolarum w) | | President Rajendra Prasad | | |
| | IRAN | (Tehran) | | Mohammad Reza Shah Pahlavi | | |
| | ITALY | (Rome a) | | President Luigi Einaudi | | |
| | JAPAN | (Tokyo) | | Emperor Hirohito | | |
| | LUXEMBOURG | (Luxembourg a) | | Grand Duchess Charlotte | | |
| | MEXICO | (Mexico City) | | President Adolfo Ruiz Cortines | | |
| | NICARAGUA | (Managua) | | President Anastasio Somoza Garcia | | |
| | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) | | Queen Juliana | | |
| | NORWAY | (Oslo) | | King Haakon VII | | |
| | PANAMA | (Panama City) | | President Jose Antonio Remon Cantera | | |
| | PERU | (Lima) | | President Manuel Arturo Odria | | |
| | PAKISTAN | (Karachi) | | Ghulam Muhammad | | |
| | POLAND | (Warsaw a) | | Boleslaw Bierut | | |
| | PORTUGAL | (Lisbon) | | President Francisco Craveiro Lopes | | |
| | PARAGUAY | (Assumption) | | President Federico Chaves | | |
| | RUMANIA | (Bucharest) | | Gheorghe Gheorghiu-Dej | | |
| | SWEDEN | (Stockholm) | | King Gustav VI Adolphe | | |
| | EL SALVADOR | (San Salvador) | | President Oscar Osorio | | |
| | THAILAND | (Bangkok) | | King Rama IX Bhumibol Adulyadej | | |
| | TURKEY | (Ankara a) | | President Celal Bayar | | |
| | CHINA | (Taipeh t) | | President Chiang Kai-Shek | | |
| | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) | | Queen Elizabeth II | | |
| | AMERICA | (Washington-District of Columbia) | | President Dwight David Eisenhower | | |
| | URUGUAY | (Montevideo) | | President Andres Martinez Trueba | | |
| | VENEZUELA | (Caracas) | | President Marcos Perez Jimenez | | |
| | YUGOSLAVIA | (Belgrade) | | President Josip Broz Tito | | |