23 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 Hipolito Yrigoyen | | |
| | GERMAN-AUSTRIA | (Vienna) | | Directory | | |
| | BELGIUM | (Brussels) | | King Albert I | | |
| | CANADA | (Ottawa) | | King George V | | |
| | SWITZERLAND | (Berne lq + Lausanne j) | | President Felix Louis Calonder | | |
| | CHILI | (Santiago of Chili a + Valparaiso ls) | | President Juan Luis Sanfuentes | | |
| | GERMANY | (Berlin a) | | President Richard Mueller | | |
| | DENMARK | (Copenhagen) | | King Christian X | | |
| | SPAIN | (Madrid) | | King Alfonso XII | | |
| | WHITE RUSSIA | (Omsk) | | Alexander Kolchak | | |
| | FINLAND | (Helsinki a) | | Regent Pehr Evind Svinhufvud | | |
| | FRANCE | (Paris) | | President Raymond Poincare | | |
| | HUNGARY | (Budapest a) | | PM Count Mihaly Karolyi de Nagykaroly | | |
| | IRELAND | (Dublin) | | | | |
| | ITALY | (Rome a) | | King Victor Emmanuel III | | |
| | LUXEMBURG | (Luxembourg a) | | Grand Duchess Marie-Adelaide | | |
| | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) | | Queen Wilhelmina | | |
| | NORWAY | (Christiania) | | King Haakon VII | | |
| | SWEDEN | (Stockholm) | | King Gustav V | | |
| | ENGLAND | (London a + Westminster lr) | | King George V | | |
| | WALES AND MONMOUTHSHIRE | ((Westminster) + Cardiff k) | | Prince Edward | | |
| | SCOTLAND | (Edinburgh) | | | | |
| | AMERICA | (Washington-District of Columbia) | | President Woodrow Wilson | | |