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. ] :
| | ARMENIA | (Erevan) | | President Serge Sarkisyan | | |
| | AUSTRIA | (Vienna) | | President Heinz Fischer | | |
| | AZERBAIJAN | (Baku) | | President Iham Aliyev | | |
| | BOSNIA AND HERZEGOVINA | (Sarajevo) | | President Zeljko Komshich | | |
| | BELARUS | (Minsk) | | President Alexander Lukashenko | | |
| | SWITZERLAND | (Berne lq + Lausanne j) | | President Hans-Rudolf Merz | | |
| | NATO | (Brussels) | | SG Jaap de Hoop Scheffer (nl) | | |
| | FINLAND | (Helsinki a + Kultaranta s) | | President Tarja Halonen | | |
| | GEORGIA | (Tbilisi a + Batumi d) | | President Mikheil Saakashvili | | |
| | IRELAND | (Dublin) | | President Mary McAleese | | |
| | KYRGYZSTAN | (Bishkek) | | President Kurmanbek Bakiyev | | |
| | KAZAKHSTAN | (Astana a) | | President Nursultan Nazarbayev | | |
| | LITHUANIA | (Vilnius) | | President Valdas Adamkus | | |
| | MOLDOVA | (Chisinau) | | President Vladimir Voronin | | |
| | MONTENEGRO | (Podgoritsa a + Cetinje hr) | | President Filip Vujanovich | | |
| | MACEDONIA | (Skopje) | | President Gjorge Ivanov | | |
| | MALTA | (Valletta a + Attard r + Siggiewi s) | | President George Abela | | |
| | SERBIA | (Belgrade) | | President Boris Tadich | | |
| | RUSSIA | (Moscow a + Saint Petersburg d) | | President Dmitry Medvedev | | |
| | TAJIKISTAN | (Dushanbe) | | President Emomali Rakhmonov | | |
| | TURKMENISTAN | (Ashgabat) | | President Arkadag Gurbanguly Berdymukhammedov | | |
| | UKRAINE | (Kiev) | | President Viktor Yushchenko | | |
| | UZBEKISTAN | (Tashkent a + Durman r) | | President Islam Karimov | | |