29 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. ] :
| | AUSTRIA | (Vienna) | | President Heinz Fischer | | |
| | AUSTRALIA | (Canberra) | | Sir Peter Cosgrove | | |
| | BELGIUM | (Brussels) | | King Philippe | | |
| | CANADA | (Ottawa) | | Queen Elizabeth II | | |
| | SWITZERLAND | (Berne lq + Lausanne j) | | President Simonetta Sommaruga | | |
| | CZECHIA | (Prague elr + Brno dj + Lany r) | | President Milos Zeman | | |
| | GERMANY | (Berlin ar + Bonn lr + Karlsruhe d) | | Bundespresident Joachim Gauck | | |
| | DENMARK | (Copenhagen) | | Queen Margaret II | | |
| | SPAIN | (Madrid) | | King Philip VI | | |
| | EUROPEAN UNION | (Brussels a + Luxembourg j + Strasbourg l) | | President Jean-Claude Juncker | | |
| | FINLAND | (Helsinki a + Kultaranta s) | | President Sauli Niinisto | | |
| | FRANCE | (Paris) | | President Francois Hollande | | |
| | GREECE | (Athens a) | | President Prokopis Pavlopoulos | | |
| | HUNGARY | (Budapest a) | | President Janos Ader | | |
| | IRELAND | (Dublin) | | President Michael Daniel Higgins | | |
| | ITALY | (Rome a) | | President Sergio Mattarella | | |
| | JAPAN | (Tokyo) | | Emperor Akihito | | |
| | SOUTH KOREA | (Seoul adknr + Sejong b) | | President Park Geun-Hye | | |
| | LUXEMBOURG | (Luxembourg a) | | Grand Duke Henri | | |
| | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) | | King Willem-Alexander | | |
| | NORWAY | (Oslo) | | King Harald V | | |
| | NEW ZEALAND | (Wellington) | | Queen Elizabeth II | | |
| | POLAND | (Warsaw a) | | President Bronislaw Komorowski | | |
| | PORTUGAL | (Lisbon) | | President Anibal Cavaco Silva | | |
| | SWEDEN | (Stockholm) | | King Charles XVI Gustav | | |
| | SLOVAKIA | (Bratislava a + Kosice d) | | President Andrej Kiska | | |
| | TURKEY | (Ankara a) | | President Recep Tayyip Erdogan | | |
| | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) | | Queen Elizabeth II | | |
| | AMERICA | (Washington-District of Columbia) | | President Barack Obama | | |