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. ] :
![](flag/AH__-1900-01-01.jpg) | ![](arm/AH__-1900-01-01.jpg) | AUSTRIA-HUNGARY | (Vienna ar + Budapest a) | ![](ruler/AH__-1900-01-01.jpg) | Emperor Francis Joseph I | ![](logo/WW-EA-EU.jpg) | |
![](flag/AR__-1913-01-01.jpg) | ![](arm/AR__-1900-01-01.jpg) | ARGENTINE | (Buenos Ayres a) | ![](ruler/AR__-1910-10-12.jpg) | President Roque Saenz Pena | ![](logo/WW-AM-SA.jpg) | |
![](flag/BE__-1900-01-01.jpg) | ![](arm/BE__-1900-01-01.jpg) | BELGIUM | (Brussels) | ![](ruler/BE__-1909-12-23.jpg) | King Albert I | ![](logo/WW-EA-EU.jpg) | |
![](flag/BG__-1900-01-01.jpg) | ![](arm/BG__-1900-01-01.jpg) | BULGARIA | (Sofia) | ![](ruler/BG__-1900-01-01.jpg) | Tsar Ferdinand I | ![](logo/WW-EA-EU.jpg) | |
![](flag/CA__-1900-01-01.jpg) | ![](arm/CA__-1907-05-30.jpg) | CANADA | (Ottawa) | ![](ruler/UK__-1910-05-06.jpg) | King George V | ![](logo/WW-AM-NA.jpg) | |
![](flag/CH__-1900-01-01.jpg) | ![](arm/CH__-1900-01-01.jpg) | SWITZERLAND | (Berne lq + Lausanne j) | ![](ruler/CH__-1913-01-01.jpg) | President Eduard Mueller | ![](logo/WW-EA-EU.jpg) | |
![](flag/CL__-1912-01-11.jpg) | ![](arm/CL__-1900-01-01.jpg) | CHILI | (Santiago of Chili a + Valparaiso ls) | ![](ruler/CL__-1910-12-23.jpg) | President Ramon Barros Luco | ![](logo/WW-AM-SA.jpg) | |
![](flag/DE__-1900-01-01.jpg) | ![](arm/DE__-1900-01-01.jpg) | GERMANY | (Berlin a) | ![](ruler/DE__-1900-01-01.jpg) | Emperor William II | ![](logo/WW-EA-EU.jpg) | |
![](flag/DK__-1900-01-01.jpg) | ![](arm/DK__-1903-01-02.jpg) | DENMARK | (Copenhagen) | ![](ruler/DK__-1912-05-14.jpg) | King Christian X | ![](logo/WW-EA-EU.jpg) | |
![](flag/EC__-1900-12-05.jpg) | ![](arm/EC__-1900-10-31.jpg) | ECUADOR | (San Francisco of Quito) | ![](ruler/EC__-1912-09-01.jpg) | President Leonidas Plaza Gutierrez | ![](logo/WW-AM-SA.jpg) | |
![](flag/ES__-1900-01-01.jpg) | ![](arm/ES__-1900-01-01.jpg) | SPAIN | (Madrid) | ![](ruler/ES__-1900-01-01.jpg) | King Alfonso XII | ![](logo/WW-EA-EU.jpg) | |
![](flag/FR__-1900-01-01.jpg) | ![](arm/FR__-1902-01-02.jpg) | FRANCE | (Paris) | ![](ruler/FR__-1913-02-18.jpg) | President Raymond Poincare | ![](logo/WW-EA-EU.jpg) | |
![](flag/IT__-1900-01-01.jpg) | ![](arm/IT__-1900-01-01.jpg) | ITALY | (Rome a) | ![](ruler/IT__-1900-07-29.jpg) | King Victor Emmanuel III | ![](logo/WW-EA-EU.jpg) | |
![](flag/JP__-1900-01-01.jpg) | ![](arm/JP__-1900-01-01.jpg) | JAPAN | (Tokyo) | ![](ruler/JP__-1912-07-30.jpg) | Emperor Yoshihito | ![](logo/WW-EA-AS.jpg) | |
![](flag/MX__-1900-01-01.jpg) | ![](arm/MX__-1908-01-02.jpg) | MEXICO | (Mexico City) | ![](ruler/MX__-1913-02-19.jpg) | Victoriano Huerta | ![](logo/WW-AM-NA.jpg) | |
![](flag/NI__-1908-09-04.jpg) | ![](arm/NI__-1908-09-05.jpg) | NICARAGUA | (Managua) | ![](ruler/NI__-1911-05-09.jpg) | President Adolfo Diaz Recinos | ![](logo/WW-AM-NA.jpg) | |
![](flag/NO__-1905-06-07.jpg) | ![](arm/NO__-1905-12-14.jpg) | NORWAY | (Christiania) | ![](ruler/NO__-1905-11-18.jpg) | King Haakon VII | ![](logo/WW-EA-EU.jpg) | |
![](flag/PE__-1900-01-01.jpg) | ![](arm/PE__-1900-01-01.jpg) | PERU | (Lima) | ![](ruler/PE__-1912-09-24.jpg) | President Guillermo Billinghurst | ![](logo/WW-AM-SA.jpg) | |
![](flag/PT__-1911-06-30.jpg) | ![](arm/PT__-1911-06-30.jpg) | PORTUGAL | (Lisbon) | ![](ruler/PT__-1911-08-24.jpg) | President Manuel de Arriaga | ![](logo/WW-EA-EU.jpg) | |
![](flag/RO__-1900-01-01.jpg) | ![](arm/RO__-1900-01-01.jpg) | RUMANIA | (Bucharest) | ![](ruler/RO__-1900-01-01.jpg) | King Carol I | ![](logo/WW-EA-EU.jpg) | |
![](flag/RS__-1900-01-01.jpg) | ![](arm/RS__-1900-01-01.jpg) | SERVIA | (Belgrade) | ![](ruler/RS__-1903-06-15.jpg) | King Peter I Karageorgevich | ![](logo/WW-EA-EU.jpg) | |
![](flag/RU__-1900-01-01.jpg) | ![](arm/RU__-1900-01-01.jpg) | RUSSIA | (Saint Petersburg) | ![](ruler/RU__-1900-01-01.jpg) | Tsar Nicholas II | ![](logo/WW-EA-EU.jpg) | |
![](flag/SE__-1905-06-07.jpg) | ![](arm/SE__-1905-11-17.jpg) | SWEDEN | (Stockholm) | ![](ruler/SE__-1907-12-08.jpg) | King Gustav V | ![](logo/WW-EA-EU.jpg) | |
![](flag/SV__-1912-05-17.jpg) | ![](arm/SV__-1912-05-17.jpg) | SALVADOR | (San Salvador) | ![](ruler/SV__-1913-02-09.jpg) | President Carlos Melendez | ![](logo/WW-AM-NA.jpg) | |
![](flag/TH__-1900-01-01.jpg) | ![](arm/TH__-1910-10-23.jpg) | SIAM | (Bankok) | ![](ruler/TH__-1910-10-23.jpg) | King Rama VI Vajiravudh | ![](logo/WW-EA-AS.jpg) | |
![](flag/TR__-1900-01-01.jpg) | ![](arm/TR__-1900-01-01.jpg) | OTTOMAN TURKEY | (Constantinople a) | ![](ruler/TR__-1909-04-27.jpg) | Sultan Mehmet V. Reshat Gazi | ![](logo/WW-EA-EU.jpg) | |
![](flag/UK__-1900-01-01.jpg) | ![](arm/UK__-1900-01-01.jpg) | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) | ![](ruler/UK__-1910-05-06.jpg) | King George V | ![](logo/WW-EA-EU.jpg) | |
![](flag/US__-1912-07-04.jpg) | ![](arm/US__-1900-01-01.jpg) | AMERICA | (Washington-District of Columbia) | ![](ruler/US__-1913-03-04.jpg) | President Woodrow Wilson | ![](logo/WW-AM-NA.jpg) | |
![](flag/UY__-1900-01-01.jpg) | ![](arm/UY__-1900-01-01.jpg) | URUGUAY | (Montevideo) | ![](ruler/UY__-1911-03-01.jpg) | President Jose Batlle | ![](logo/WW-AM-SA.jpg) | |
![](flag/VE__-1905-03-28.jpg) | ![](arm/VE__-1900-01-01.jpg) | VENEZUELA | (Caracas) | ![](ruler/VE__-1910-06-03.jpg) | President Juan Vicente Gomez | ![](logo/WW-AM-SA.jpg) | |