45 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 Ayres a + Olivos b) |  | President Marcelo Torcuato de Alvear |  | |
 |  | AUSTRIA | (Vienna) |  | President Michael Hainisch |  | |
 |  | BELGIUM | (Brussels) |  | King Albert I | | |
 |  | BULGARIA | (Sofia) |  | Tsar Boris III the Unifier | | |
 |  | BOLIVIA | (Sucre cj + La Paz eir) |  | President Hernando Siles Reyes | | |
 |  | BRAZIL | (Rio de Janeiro) |  | President Washington Luiz | | |
 |  | SWITZERLAND | (Berne lq + Lausanne j) |  | President Heinrich Haeberlin | | |
 |  | CHILE | (Santiago of Chile a + Valparaiso ls) |  | President Emiliano Figueroa | | |
 |  | COLOMBIA | (Bogota) |  | President Miguel Abadia Mendez | | |
 |  | CUBA | (Havana) |  | President Gerardo Machado |  | |
 |  | GERMANY | (Berlin a) |  | Reichpresident Paul von Hindenburg | | |
 |  | DENMARK | (Copenhagen) |  | King Christian X | | |
 |  | DOMINICAN | (Santo Domingo) |  | President Horacio Vasquez | | |
 |  | ECUADOR | (San Francisco of Quito) |  | President Isidro Ayora | | |
 |  | SPAIN | (Madrid) |  | King Alfonso XII | | |
 |  | FINLAND | (Helsinki a + Kultaranta s) |  | President Lauri Kristian Relander | | |
 |  | FRANCE | (Paris) |  | Frederic Francois-Marsal | | |
 |  | GREECE | (Athens a) |  | President Pavlos Theodorou Koundouriotis | | |
 |  | GUATEMALA | (Guatemala City) |  | President Lazaro Chacon Gonzalez | | |
 |  | HAYTI | (Port Au Prince) |  | President Louis Borno | | |
 |  | HUNGARY | (Budapest a) |  | Regent Miklos Horthy de Nagybanya | | |
 |  | PERSIA | (Tehran) |  | Reza Shah Pahlavi the Great |  | |
 |  | ITALY | (Rome a) |  | King Victor Emmanuel III | | |
 |  | JAPAN | (Tokyo) |  | Emperor Yoshihito | | |
 |  | LUXEMBURG | (Luxembourg a) |  | Grand Duchess Charlotte | | |
 |  | MEXICO | (Mexico City) |  | President Plutarco Elias Calles | | |
 |  | NICARAGUA | (Managua) |  | President Adolfo Diaz Recinos | | |
 |  | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) |  | Queen Wilhelmina | | |
 |  | NORWAY | (Oslo) |  | King Haakon VII | | |
 |  | PANAMA | (Panama City) |  | President Rodolfo Chiari | | |
 |  | PERU | (Lima) |  | President Augusto Leguia | | |
 |  | POLAND | (Warsaw a) |  | Jozef Pilsudski | | |
 |  | PORTUGAL | (Lisbon) |  | President Oscar Carmona | | |
 |  | PARAGUAY | (Assumption) |  | President Eligio Ayala | | |
 |  | CHINA | (Shanghai) |  | Vi Kyuin Wellington Koo | | |
 |  | RUMANIA | (Bucharest) |  | King Ferdinand I | | |
 |  | SWEDEN | (Stockholm) |  | King Gustav V | | |
 |  | EL SALVADOR | (San Salvador) |  | President Alfonso Quinonez Molina | | |
 |  | SIAM | (Bangkok) |  | King Rama VII Prajadhipok | | |
 |  | TURKEY | (Angora a) |  | President Mustafa Kemal Pasha | | |
 |  | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) |  | King George V | | |
 |  | AMERICA | (Washington-District of Columbia) |  | President Calvin Coolidge | | |
 |  | URUGUAY | (Montevideo) |  | President Jose Serrato | | |
 |  | VENEZUELA | (Caracas) |  | President Juan Vicente Gomez | | |
 |  | JUGO-SLAVIA | (Belgrade) |  | King Alexander I. the Unifier Karageorgevich | | |
