21 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 Alexander Van der Bellen | | |
| | AUSTRALIA | (Canberra) | | Sir Peter Cosgrove | | |
| | BELGIUM | (Brussels) | | King Philippe | | |
| | CHILE | (Santiago of Chile a + Valparaiso l + Vina del Mar s) | | President Sebastian Pinera | | |
| | FRANCE | (Paris) | | President Emmanuel Macron | | |
| | GUATEMALA | (Guatemala City) | | President Jimmy Morales Cabrera | | |
| | INDIA | (New Delhi a + Simla s + Bolarum w) | | President Ram Nath Kovind | | |
| | KUWAIT | (Kuwait City) | | Emir Sheikh Sabah IV Al Ahmad Al Jabir Al Sabah | | |
| | KAZAKHSTAN | (Astana a) | | President Elbashy Nursultan Nazarbayev | | |
| | LEBANON | (Beirut a + Baabda r + Hadeth d) | | President Michel Aoun | | |
| | MOROCCO | (Rabat a) | | King Muhammad VI | | |
| | MEXICO | (Mexico City) | | President Enrique Pena Nieto | | |
| | NETHERLANDS | (Amsterdam a + The Hague jlr + Wassenaar r) | | King Willem-Alexander | | |
| | PERU | (Lima a + Arequipa d + Cusco h) | | President Martin Vizcarra | | |
| | PHILIPPINES | (Manila acr + Quezon City b + Pasay City b) | | President Rodrigo Duterte | | |
| | PAKISTAN | (Islamabad) | | President Mamnoon Hussain | | |
| | ROMANIA | (Bucharest) | | President Klaus Iohannis | | |
| | SAUDI ARABIA | (Riyadh) | | King Salman | | |
| | TURKEY | (Ankara a) | | President Recep Tayyip Erdogan | | |
| | URUGUAY | (Montevideo) | | President Tabare Vazquez | | |
| | VENEZUELA | (Caracas) | | President Nicolas Maduro | | |