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 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 | | |
 |  | BRAZIL | (Rio de Janeiro) |  | President Artur Bernardes | | |
 |  | SWITZERLAND | (Berne lq + Lausanne j) |  | President Robert Haab | | |
 |  | CHILI | (Santiago of Chili a + Valparaiso ls) |  | President Arturo Alessandri Palma | | |
 |  | COLOMBIA | (Bogota) |  | President Pedro Nel Ospina | | |
 |  | COSTA RICA | (San Jose) |  | President Julio Acosta Garcia |  | |
 |  | CZECHOSLOVAKIA | (Prague a + Lany s) |  | President Tomas Garrigue Masaryk | | |
 |  | CUBA | (Havana) |  | President Alfredo Zayas | | |
 |  | DANZIG | (Danzig) |  | Heinrich Sahm | | |
 |  | GERMANY | (Berlin a) |  | Reichpresident Friedrich Ebert | | |
 |  | DENMARK | (Copenhagen) |  | King Christian X | | |
 |  | ESTHONIA | (Tallinna a + Tartu b) |  | Johannes Kukk | | |
 |  | SPAIN | (Madrid) |  | King Alfonso XII | | |
 |  | FINLAND | (Helsinki a + Kultaranta s) |  | President Kaarlo Juho Stahlberg | | |
 |  | FRANCE | (Paris) |  | President Alexandre Millerand | | |
 |  | GREECE | (Athens a) |  | King George II | | |
 |  | HUNGARY | (Budapest a) |  | Regent Miklos Horthy de Nagybanya | | |
 |  | ITALY | (Rome a) |  | King Victor Emmanuel III | | |
 |  | JAPAN | (Tokyo) |  | Emperor Yoshihito |  | |
 |  | LUXEMBURG | (Luxembourg a) |  | Grand Duchess Charlotte | | |
 |  | MEXICO | (Mexico City) |  | President Alvaro Obregon | | |
 |  | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) |  | Queen Wilhelmina | | |
 |  | NORWAY | (Christiania) |  | King Haakon VII | | |
 |  | PERU | (Lima) |  | President Augusto Leguia | | |
 |  | POLAND | (Warsaw a) |  | President Gabriel Narutowicz | | |
 |  | PORTUGAL | (Lisbon) |  | President Antonio Jose de Almeida | | |
 |  | PARAGUAY | (Assumption) |  | President Eusebio Ayala | | |
 |  | CHINA | (Peking) |  | President Li Yuan-Hung | | |
 |  | RUMANIA | (Bucharest) |  | King Ferdinand I | | |
 |  | SWEDEN | (Stockholm) |  | King Gustav V | | |
 |  | SOVIET UNION | (Moscow) |  | Joseph Stalin | | |
 |  | SIAM | (Bangkok) |  | King Rama VI Vajiravudh | | |
 |  | TURKEY | (Angora a + (Constantinople)) |  | Mustafa Kemal Pasha | | |
 |  | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) |  | King George V | | |
 |  | AMERICA | (Washington-District of Columbia) |  | President Warren Gamaliel Harding | | |
 |  | URUGUAY | (Montevideo) |  | President Baltasar Brum | | |
 |  | VENEZUELA | (Caracas) |  | President Juan Vicente Gomez | | |
 |  | JUGO-SLAVIA | (Belgrade) |  | King Alexander I. the Unifier Karageorgevich | | |
