20 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. ] :
| | ARGENTINE | (Buenos Aires a + Olivos r) | | President Alberto Fernandez | | |
| | AUSTRALIA | (Canberra) | | David Hurley | | |
| | BRAZIL | (Brasilia) | | President Jair Bolsonaro | | |
| | CANADA | (Ottawa) | | Queen Elizabeth II | | |
| | CHINA | (Beijing) | | Xi Jinping | | |
| | GERMANY | (Berlin ar + Bonn lr + Karlsruhe d) | | Bundespresident Frank-Walter Steinmeier | | |
| | EUROPEAN UNION | (Brussels a + Luxembourg j + Strasbourg l) | | President Ursula von der Leyen | | |
| | FRANCE | (Paris) | | President Emmanuel Macron | | |
| | INDONESIA | (Jakarta a + Bogor r + Chipanas r + Yogyakarta r + Tampaksiring r) | | President Joko Widodo | | |
| | INDIA | (New Delhi a + Simla s + Bolarum w) | | President Ram Nath Kovind | | |
| | ITALY | (Rome a) | | President Sergio Mattarella | | |
| | JAPAN | (Tokyo) | | Emperor Naruhito | | |
| | SOUTH KOREA | (Seoul adknr + Sejong b) | | President Moon Jae-In | | |
| | MEXICO | (Mexico City) | | President Andres Manuel Lopez Obrador | | |
| | RUSSIA | (Moscow a + Saint Petersburg d) | | President Vladimir Putin | | |
| | SAUDI ARABIA | (Riyadh) | | King Salman | | |
| | TURKEY | (Ankara a + Marmaris s) | | President Recep Tayyip Erdogan | | |
| | UNITED KINGDOM | (London a + Westminster lr + Edinburgh s + Windsor r) | | Queen Elizabeth II | | |
| | AMERICA | (Washington-District of Columbia) | | President Donald Trump | | |
| | SOUTH AFRICA | (Pretoria ae + Cape Town l + Bloemfontein j + Johannesburg d) | | President Cyril Ramaphosa | | |