25 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. ] :
| | ARMENIA | (Erevan) | | Aram Manoukyan | | |
| | BELGIUM-IN-EXILE | (Saint Adresse x + The Panne g) | | King Albert I | | |
| | BOLIVIA | (Sucre cj + La Paz eir) | | President Jose Gutierrez | | |
| | BRAZIL | (Rio de Janeiro) | | President Venceslau Bras | | |
| | COSTA RICA | (San Jose) | | President Federico Alberto Tinoco Granados | | |
| | CUBA | (Havana) | | President Mario Garcia Menocal | | |
| | SERBIA-IN-EXILE | (Corcyra) | | King Peter I. Karageorgevich | | |
| | ECUADOR | (San Francisco of Quito) | | President Alfredo Baquerizo Moreno | | |
| | FRANCE | (Paris) | | President Raymond Poincare | | |
| | GREECE | (Athens a) | | King Alexander I | | |
| | GUATEMALA | (Guatemala City) | | President Manuel Jose Estrada | | |
| | ITALY | (Rome a) | | King Victor Emmanuel III | | |
| | JAPAN | (Tokyo) | | Emperor Yoshihito | | |
| | LIBERIA | (Monrovia) | | President Daniel Edward Howard | | |
| | MEXICO | (Mexico City) | | President Venustiano Carranza | | |
| | NICARAGUA | (Managua) | | President Emiliano Chamorro | | |
| | PANAMA | (Panama City) | | Ciro Luis Urriola | | |
| | PERU | (Lima) | | President Jose Pardo y Barreda | | |
| | PORTUGAL | (Lisbon) | | President Sidonio Pais | | |
| | CHINA | (Peking) | | President Feng Kuo-Chang | | |
| | SAN MARINO | (San Marino) | | Captains Regent | | |
| | SIAM | (Bangkok) | | King Rama VI Vajiravudh | | |
| | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) | | King George V | | |
| | AMERICA | (Washington-District of Columbia) | | President Woodrow Wilson | | |
| | URUGUAY | (Montevideo) | | President Feliciano Viera | | |