83 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. ] :
 |  | AFGHANISTAN | (Kabul) |  | President Ashraf Ghani |  | |
 |  | ALBANIA | (Tirana) |  | President Ilir Meta |  | |
 |  | ARMENIA | (Erevan) |  | President Armen Sarkisyan | | |
 |  | AUSTRIA | (Vienna) |  | President Alexander Van der Bellen | | |
 |  | AZERBAIJAN | (Baku) |  | President Iham Aliyev | | |
 |  | BOSNIA AND HERZEGOVINA | (Sarajevo) |  | President Zeljko Komshich | | |
 |  | BANGLADESH | (Dhaka a) |  | President Abdul Hamid | | |
 |  | BELGIUM | (Brussels) |  | King Philippe | | |
 |  | BURKINA FASO | (Ouagadougou) |  | President Roch Marc Christian Kabore |  | |
 |  | BULGARIA | (Sofia) |  | President Rumen Radev | | |
 |  | BURUNDI | (Gitega a + Bujumbura dnq) |  | President Pierre Nkurunziza | | |
 |  | BENIN | (Porto Novo a + Cotonou ilnqr) |  | President Patrice Talon | | |
 |  | BOTSWANA | (Gaborone) |  | President Mokgweetsi Masisi | | |
 |  | BELARUS | (Minsk) |  | President Alexander Lukashenko | | |
 |  | SWITZERLAND | (Berne lq + Lausanne j) |  | President Simonetta Sommaruga | | |
 |  | CHILE | (Santiago of Chile a + Valparaiso l + Vina del Mar s) |  | President Sebastian Pinera |  | |
 |  | CHINA | (Beijing) |  | Xi Jinping | | |
 |  | COLOMBIA | (Bogota) |  | President Ivan Duque Marquez | | |
 |  | CYPRUS | (Nicosia) |  | President Nicos Anastasiades | | |
 |  | CZECHIA | (Prague elr + Brno dj + Lany r) |  | President Milos Zeman | | |
 |  | GERMANY | (Berlin ar + Bonn lr + Karlsruhe d) |  | Bundespresident Frank-Walter Steinmeier | | |
 |  | DENMARK | (Copenhagen) |  | Queen Margaret II | | |
 |  | ESTONIA | (Tallinn a + Tartu b) |  | President Kersti Kaljulaid | | |
 |  | SPAIN | (Madrid) |  | King Philip VI | | |
 |  | EUROPEAN UNION | (Brussels a + Luxembourg j + Strasbourg l) |  | President Ursula von der Leyen | | |
 |  | FINLAND | (Helsinki a + Kultaranta s) |  | President Sauli Niinisto | | |
 |  | FRANCE | (Paris) |  | President Emmanuel Macron | | |
 |  | GEORGIA | (Tbilisi a + Batumi d) |  | President Salome Zurabishvili | | |
 |  | GREECE | (Athens a) |  | President Prokopis Pavlopoulos | | |
 |  | CROATIA | (Zagreb) |  | President Kolinda Grabar-Kitarovich | | |
 |  | HUNGARY | (Budapest a) |  | President Janos Ader | | |
 |  | IRELAND | (Dublin) |  | President Michael Daniel Higgins | | |
 |  | ISRAEL | (Jerusalem aru + Tel Aviv-Jaffa i) |  | President Reuven Rivlin | | |
 |  | IRAN | (Tehran) |  | Supreme Leader Ayatollah Ali Khamenei | | |
 |  | JORDAN | (Amman) |  | King Abdullah II | | |
 |  | JAPAN | (Tokyo) |  | Emperor Naruhito | | |
 |  | KENYA | (Nairobi) |  | President Uhuru Kenyatta | | |
 |  | KYRGYZSTAN | (Bishkek) |  | President Sooronbay Jeenbekov | | |
 |  | CAMBODIA | (Phnom Penh) |  | King Norodom Sihamoni | | |
 |  | SOUTH KOREA | (Seoul adknr + Sejong b) |  | President Moon Jae-In | | |
 |  | KAZAKHSTAN | (Nur-Sultan a) |  | President Kasym-Zhomart Tokayev | | |
 |  | LEBANON | (Beirut a + Baabda r + Hadeth d) |  | President Michel Aoun | | |
 |  | LIECHTENSTEIN | (Vaduz) |  | Prince Hans-Adam II | | |
 |  | LITHUANIA | (Vilnius) |  | President Gitanas Nauseda | | |
 |  | LUXEMBOURG | (Luxembourg a) |  | Grand Duke Henri | | |
 |  | LATVIA | (Riga) |  | President Egils Levits | | |
 |  | MOROCCO | (Rabat a) |  | King Muhammad VI | | |
 |  | MOLDOVA | (Chisinau) |  | President Igor Dodon | | |
 |  | MONTENEGRO | (Podgoritsa a + Cetinje hr) |  | President Milo Djukanovich | | |
 |  | MADAGASCAR | (Tananarive) |  | President Andry Rajoelina | | |
 |  | NORTH MACEDONIA | (Skopje) |  | President Stevo Pendarovski | | |
 |  | MONGOLIA | (Ulan-Bator) |  | President Khaltmaagiin Battulga | | |
 |  | MAURITANIA | (Nouakchott) |  | President Mohamed Ould Ghazouani | | |
 |  | MALTA | (Valletta a + Attard r + Siggiewi s) |  | President George Vella | | |
 |  | NIGER | (Niamey) |  | President Mahamadou Issoufou | | |
 |  | NIGERIA | (Abuja a) |  | President Muhammadu Buhari | | |
 |  | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) |  | King Willem-Alexander | | |
 |  | NORWAY | (Oslo) |  | King Harald V | | |
 |  | PHILIPPINES | (Manila acr + Quezon City b + Pasay City b) |  | President Rodrigo Duterte | | |
 |  | PAKISTAN | (Islamabad) |  | President Arif Alvi | | |
 |  | POLAND | (Warsaw a) |  | President Andrzej Duda | | |
 |  | PALESTINE | (Ramallah qr + (East Jerusalem)) |  | President Mahmoud Abbas | | |
 |  | PORTUGAL | (Lisbon) |  | President Marcelo Rebelo de Sousa | | |
 |  | ROMANIA | (Bucharest) |  | President Klaus Iohannis | | |
 |  | SERBIA | (Belgrade) |  | President Alexandar Vuchich | | |
 |  | RWANDA | (Kigali) |  | President Paul Kagame | | |
 |  | SWEDEN | (Stockholm) |  | King Charles XVI Gustav | | |
 |  | SLOVENIA | (Ljubljana) |  | President Borut Pahor | | |
 |  | SLOVAKIA | (Bratislava a + Kosice d) |  | President Zuzana Caputova | | |
 |  | SENEGAL | (Dakar) |  | President Macky Sall | | |
 |  | ESWATINI | (Mbabane aj + Lobamba lr) |  | King Mswati III | | |
 |  | CHAD | (Ndjamena) |  | President Idriss Deby Itno | | |
 |  | TAJIKISTAN | (Dushanbe) |  | President Emomali Rakhmonov | | |
 |  | TURKMENISTAN | (Ashgabat) |  | President Arkadag Gurbanguly Berdymukhammedov | | |
 |  | TURKEY | (Ankara a) |  | President Recep Tayyip Erdogan | | |
 |  | TANZANIA | (Dodoma City al + Dar Es Salaam jnqr) |  | President John Magufuli | | |
 |  | UKRAINE | (Kiev) |  | President Volodymyr Zelensky | | |
 |  | UGANDA | (Kampala a + Entebbe r) |  | President Yoweri Museveni | | |
 |  | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) |  | Queen Elizabeth II | | |
 |  | AMERICA | (Washington-District of Columbia) |  | President Donald Trump |  | |
 |  | UZBEKISTAN | (Tashkent a) |  | Shavkat Mirziyayev | | |
 |  | WEST AFRICAN STATES | (Abuja) |  | President Jean-Claude Kassi Brou (ci) | | |
 |  | YEMEN | (Aden lqt + Riyadh x) |  | President Abd Rabbuh Mansur Hadi | | |
