149 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. ] :
 |  | EMIRATES | (Abu Dhabi ar) |  | President Sheikh Muhammad bin Zayed Al Nahyan |  | |
 |  | AFGHANISTAN | (Dushanbe x) |  | Amrullah Saleh | | |
 |  | ARMENIA | (Erevan) |  | President Vahagn Khachaturyan | | |
 |  | ANGOLA | (Luanda) |  | President Joao Manuel Goncalves Lourenco |  | |
 |  | ARGENTINE | (Buenos Aires a + Olivos r) |  | President Alberto Fernandez |  | |
 |  | AUSTRIA | (Vienna) |  | President Alexander Van der Bellen |  | |
 |  | AUSTRALIA | (Canberra al + Melbourne r + Sydney r) |  | David Hurley |  | |
 |  | AZERBAIJAN | (Baku) |  | President Iham Aliyev | | |
 |  | BOSNIA AND HERZEGOVINA | (Sarajevo) |  | President Shefik Dzaferovich | | |
 |  | BARBADOS | (Bridgetown) |  | President Dame Sandra Mason |  | |
 |  | BANGLADESH | (Dhaka a) |  | President Abdul Hamid | | |
 |  | BELGIUM | (Brussels al + Bruges j) |  | King Philippe | | |
 |  | BURKINA FASO | (Ouagadougou) |  | President Paul-Henri Sandaogo Damiba | | |
 |  | BAHRAIN | (Manamah a + Sakhir r) |  | King Sheikh Hamad bin Isa Al Khalifah | | |
 |  | BENIN | (Porto Novo a + Cotonou ilmnqr) |  | President Patrice Talon | | |
 |  | BRUNEI DARUSSALAM | (Bandar Seri Begawan) |  | Sultan Hassanal Bolkiah | | |
 |  | BOLIVIA | (Sucre cj + La Paz eimr) |  | President Luis Arce | | |
 |  | BRAZIL | (Brasilia a + Rio de Janeiro m) |  | President Jair Bolsonaro | | |
 |  | THE BAHAMAS | (Nassau) |  | Queen Elizabeth II | | |
 |  | BHUTAN | (Thimphu a + Paro s) |  | King Jigme Khesar Namgyal Wangchuk | | |
 |  | BOTSWANA | (Gaborone ael + Molepolole l) |  | President Mokgweetsi Masisi | | |
 |  | CANADA | (Ottawa) |  | Mary Simon | | |
 |  | CONGO-KINSHASA | (Kinshasa a) |  | President Felix Tshisekedi | | |
 |  | CENTRAL-AFRICA | (Bangui) |  | President Faustin-Archange Touadera | | |
 |  | CONGO-BRAZZAVILLE | (Brazzaville a + Pointe Noire n) |  | President Denis Sassou-Nguesso | | |
 |  | SWITZERLAND | (Berne lq + Lausanne j) |  | President Ignazio Cassis | | |
 |  | COTE D'IVOIRE | (Yamoussoukro a + Abidjan dklmnr + Cocody br) |  | President Alassane Ouattara | | |
 |  | CHILE | (Santiago of Chile a + Valparaiso l + Vina del Mar s) |  | President Gabriel Boric | | |
 |  | CAMEROON | (Yaounde) |  | President Paul Biya | | |
 |  | CHINA | (Beijing) |  | Xi Jinping | | |
 |  | COLOMBIA | (Bogota) |  | President Ivan Duque Marquez | | |
 |  | COSTA RICA | (San Jose) |  | President Rodrigo Chaves Robles | | |
 |  | CUBA | (Havana) |  | Miguel Diaz-Canel | | |
 |  | CABO VERDE | (Praia) |  | President Jose Maria Pereira Neves | | |
 |  | CYPRUS | (Nicosia) |  | President Nicos Anastasiades | | |
 |  | CZECHIA | (Prague elr + Brno dj + Lany r) |  | President Milos Zeman | | |
 |  | GERMANY | (Berlin ar + Bonn lmr + Karlsruhe d) |  | Bundespresident Frank-Walter Steinmeier | | |
 |  | DENMARK | (Copenhagen as + Hillerod r) |  | Queen Margaret II | | |
 |  | DOMINICAN | (Santo Domingo de Guzman) |  | President Luis Abinader | | |
 |  | ALGERIA | (Algiers a + El Biar d + El Mouradia r) |  | State President Abdelmadjid Tebboune | | |
 |  | ECUADOR | (San Francisco of Quito) |  | President Guillermo Lasso | | |
 |  | ESTONIA | (Tallinn a + Tartu b) |  | President Alar Karis | | |
 |  | EGYPT | (Cairo a + Alexandria r + Almasa New Capital City f) |  | President Abdel Fattah el-Sisi | | |
 |  | SPAIN | (Madrid) |  | King Philip VI | | |
 |  | ETHIOPIA | (Addis Ababa) |  | President Sahle-Work Zewde | | |
 |  | FINLAND | (Helsinki a + Kultaranta s) |  | President Sauli Niinisto | | |
 |  | FIJI | (Suva) |  | President Ratu Wiliame Katonivere | | |
 |  | MICRONESIA | (Palikir a + Kolonia b) |  | President David Panuelo | | |
 |  | FRANCE | (Paris a + Bormes-Les-Mimosas s) |  | President Emmanuel Macron | | |
 |  | GABON | (Libreville) |  | President Ali Ben Bongo Ondimba | | |
 |  | GEORGIA | (Tbilisi a + Batumi d) |  | President Salome Zurabishvili | | |
 |  | GHANA | (Accra) |  | President Nana Addo Dankwa Akufo-Addo | | |
 |  | THE GAMBIA | (Banjul) |  | President Adama Barrow | | |
 |  | GUINEA | (Conakry) |  | Mamady Doumbouya | | |
 |  | EQUATORIAL GUINEA | (City of Peace fl + Malabo a) |  | President Teodoro Obiang Nguema Mbasogo | | |
 |  | GREECE | (Athens a) |  | President Ekaterini Sakellaropoulou | | |
 |  | GUATEMALA | (Guatemala City) |  | President Alejandro Giammattei | | |
 |  | GUINEA-BISSAU | (Bissau) |  | President Umaro Sissoco Embalo | | |
 |  | HONDURAS | (Tegucigalpa a + Comayaguela c) |  | President Xiomara Castro | | |
 |  | CROATIA | (Zagreb) |  | President Zoran Milanovich | | |
 |  | HAITI | (Port Au Prince) |  | Ariel Henry | | |
 |  | HUNGARY | (Budapest a) |  | President Katalin Novak | | |
 |  | INDONESIA | (Jakarta akn + Nusantara f + Bogor r + Chipanas r + Yogyakarta r + Tampaksiring r) |  | President Joko Widodo | | |
 |  | IRELAND | (Dublin) |  | President Michael Daniel Higgins | | |
 |  | ISRAEL | (Jerusalem aruy + Tel Aviv-Jaffa imn) |  | President Isaac Herzog | | |
 |  | INDIA | (New Delhi a + Simla s + Bolarum w + Mysore r) |  | President Ram Nath Kovind | | |
 |  | IRAQ | (Baghdad a + Kerbala y + Najaf y) |  | President Barham Salih | | |
 |  | IRAN | (Tehran a + Qum y) |  | Supreme Leader Ayatollah Ali Khamenei | | |
 |  | ICELAND | (Reykjavik a + Alftanes r) |  | President Gudhni Thorlacius Johannesson | | |
 |  | ITALY | (Rome a) |  | President Sergio Mattarella | | |
 |  | JAMAICA | (Kingston) | | Queen Elizabeth II | | |
 |  | JORDAN | (Amman) |  | King Abdullah II | | |
 |  | JAPAN | (Tokyo an + Kyoto r + Nasu s + Shimoda s + Hayama w) |  | Emperor Naruhito | | |
 |  | KENYA | (Nairobi) |  | President Uhuru Kenyatta | | |
 |  | KYRGYZSTAN | (Bishkek) |  | President Sadyr Zhaparov | | |
 |  | COMOROS | (Moroni a) |  | President Azali Assoumani | | |
 |  | NORTH KOREA | (Pyongyang a) |  | Kim Jong-Un | | |
 |  | SOUTH KOREA | (Seoul adknr + Sejong b + Gyeryong m) |  | President Yoon Suk-Yeol | | |
 |  | KUWAIT | (Kuwait City a + Bayan lr) |  | Emir Sheikh Nawaf Al Ahmad Al Jabir Al Sabah | | |
 |  | KAZAKHSTAN | (Nur-Sultan a) |  | President Kasym-Zhomart Tokayev | | |
 |  | LEBANON | (Beirut a + Baabda r + Yarze m + Hadeth d) |  | President Michel Aoun | | |
 |  | LIECHTENSTEIN | (Vaduz) |  | Prince Hans-Adam II | | |
 |  | SRI LANKA | (Sri Jayewardenepura Kotte al + Colombo ejnr + Kandy r) |  | President Gotabaya Rajapaksa | | |
 |  | LUXEMBOURG | (Luxembourg a) |  | Grand Duke Henri | | |
 |  | LIBYA | (Tripoli a) |  | Muhammad Younus Al-Menfi | | |
 |  | MOROCCO | (Rabat a) |  | King Muhammad VI | | |
 |  | MONACO | (Monaco q) |  | Prince Albert II | | |
 |  | MONTENEGRO | (Podgoritsa a + Cetinje hr) |  | President Milo Djukanovich | | |
 |  | MADAGASCAR | (Tananarive) |  | President Andry Rajoelina | | |
 |  | MALI | (Bamako) |  | Assimi Goita | | |
 |  | MONGOLIA | (Ulan-Bator) |  | President Ukhnaagiin Khurelsukh | | |
 |  | MAURITANIA | (Nouakchott) |  | President Mohamed Ould Ghazouani | | |
 |  | MALTA | (Valletta a + Attard r + Siggiewi s) |  | President George Vella | | |
 |  | MAURITIUS | (Port Louis a + Reduit in Moka r) |  | President Prithvirajsing Pradeep Roopun | | |
 |  | MALAWI | (Lilongwe al + Blantyre jn) |  | President Lazarus Chakwera | | |
 |  | MEXICO | (Mexico City) |  | President Andres Manuel Lopez Obrador | | |
 |  | MALAYSIA | (Putrajaya aj + Kuala Lumpur ejklnry) |  | Sultan Abdullah Shah | | |
 |  | MOZAMBIQUE | (Maputo) |  | President Filipe Nyusi | | |
 |  | NAMIBIA | (Windhoek) |  | President Hage Geingob | | |
 |  | NIGER | (Niamey) |  | President Mohamed Bazoum | | |
 |  | NIGERIA | (Abuja a + Lagos kmn) |  | President Muhammadu Buhari | | |
 |  | NICARAGUA | (Managua) |  | President Daniel Ortega | | |
 |  | NETHERLANDS | (Amsterdam a + The Hague jlmr + Wassenaar r) |  | King Willem-Alexander | | |
 |  | NORWAY | (Oslo) |  | King Harald V | | |
 |  | NEPAL | (Kathmandu) |  | President Bidhya Devi Bhandari | | |
 |  | NEW ZEALAND | (Wellington) | | Queen Elizabeth II | | |
 |  | OMAN | (Muscat) |  | Sultan Haitham bin Tarik | | |
 |  | PANAMA | (Panama City) |  | President Laurentino Cortizo Cohen | | |
 |  | PERU | (Lima a + Arequipa d + Cusco h) |  | President Pedro Castillo | | |
 |  | PAPUA NEW GUINEA | (Port Moresby) | | Queen Elizabeth II | | |
 |  | PHILIPPINES | (Manila acr + Quezon City b + Pasay City b) |  | President Rodrigo Duterte | | |
 |  | PAKISTAN | (Islamabad a + Lahore ky + Rawalpindi m) |  | President Arif Alvi | | |
 |  | POLAND | (Warsaw ac) |  | President Andrzej Duda | | |
 |  | PORTUGAL | (Lisbon) |  | President Marcelo Rebelo de Sousa | | |
 |  | PARAGUAY | (Assumption) |  | President Mario Abdo Benitez | | |
 |  | QATAR | (Doha) |  | Emir Sheikh Tamim bin Hamad Al Thani | | |
 |  | ROMANIA | (Bucharest) |  | President Klaus Iohannis | | |
 |  | SERBIA | (Belgrade) |  | President Alexandar Vuchich | | |
 |  | RUSSIA | (Moscow a + Saint Petersburg d + Sochi s + Valdai s) |  | President Vladimir Putin | | |
 |  | RWANDA | (Kigali) |  | President Paul Kagame | | |
 |  | SAUDI ARABIA | (Riyadh a + Mecca y) |  | King Salman | | |
 |  | SUDAN | (Khartoum a) |  | General Abdel-Fatah al-Burhan Abdelrahman | | |
 |  | SWEDEN | (Stockholm) |  | King Charles XVI Gustav | | |
 |  | SINGAPORE | (Singapore) |  | President Halimah Yacob | | |
 |  | SENEGAL | (Dakar) |  | President Macky Sall | | |
 |  | SOMALIA | (Mogadishu-Hamar Weyne) |  | President Hassan Sheikh Mohamud | | |
 |  | EL SALVADOR | (San Salvador) |  | President Nayib Bukele | | |
 |  | SYRIA | (Damascus) |  | President Bashar Al-Assad | | |
 |  | ESWATINI | (Mbabane aej + Lobamba jlr) |  | King Mswati III | | |
 |  | CHAD | (Ndjamena) |  | President Mahamat Idriss Deby Itno Kaka | | |
 |  | TOGO | (Lome) |  | President Faure Gnassingbe | | |
 |  | THAILAND | (Bangkok) |  | King Rama X. Vajiralongkorn | | |
 |  | TAJIKISTAN | (Dushanbe) |  | President Emomali Rakhmonov | | |
 |  | TUNISIA | (Tunis a + Bardois df) |  | President Kais Saied | | |
 |  | TURKIYE | (Ankara a + Marmaris s) |  | President Recep Tayyip Erdogan | | |
 |  | TRINIDAD AND TOBAGO | (Port-of-Spain) |  | President Paula-Mae Weeke | | |
 |  | TANZANIA | (Dodoma City aln + Dar Es Salaam jnqr) |  | President Samia Suluhu | | |
 |  | 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 a + Arlington m) |  | President Joe Biden | | |
 |  | URUGUAY | (Montevideo) |  | President Luis Alberto Lacalle Pou | | |
 |  | UZBEKISTAN | (Tashkent a) |  | Shavkat Mirziyayev | | |
 |  | HOLY SEE | (Vatican City a + Pontifical Palace of Castel Gandolfo s) |  | Pope Francis | | |
 |  | VENEZUELA | (Caracas) |  | President Nicolas Maduro | | |
 |  | VIETNAM | (Hanoi) |  | Nguyen Phu Trong | | |
 |  | YEMEN | (Seiyun l + Riyadh x) |  | Rashad al-Alimi | | |
 |  | SOUTH AFRICA | (Pretoria aem + Cape Town l + Bloemfontein j + Johannesburg d) |  | President Cyril Ramaphosa | | |
 |  | ZAMBIA | (Lusaka) |  | President Hakainde Hichilema | | |
 |  | ZIMBABWE | (Harare) |  | President Emmerson Mnangagwa | | |
Sources are available upon request.
