26 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 | | |
| | AUSTRALIA | (Canberra) | | Sir Peter Cosgrove | | |
| | BANGLADESH | (Dhaka a) | | President Abdul Hamid | | |
| | BHUTAN | (Thimphu a + Paro s) | | King Jigme Khesar Namgyal Wangchuk | | |
| | FIJI | (Suva) | | President George Konrote | | |
| | 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 | | |
| | IRAN | (Tehran) | | Supreme Leader Ayatollah Ali Khamenei | | |
| | JAPAN | (Tokyo) | | Emperor Akihito | | |
| | SOUTH KOREA | (Seoul adknr + Sejong b) | | President Moon Jae-In | | |
| | LAOS | (Vientiane) | | Boungnang Vorachith | | |
| | SRI LANKA | (Sri Jayewardenepura Kotte al + Colombo ejnr + Kandy r) | | President Maithripala Sirisena | | |
| | MYANMAR | (Naypyidaw a + Rangoon bn) | | President Win Myint | | |
| | MONGOLIA | (Ulan-Bator) | | President Khaltmaagiin Battulga | | |
| | MALDIVES | (Male) | | President Abdulla Yameen Abdul Gayoom | | |
| | MALAYSIA | (Putrajaya aj + Kuala Lumpur ejlry) | | Sultan Muhammad V. Faris Petra | | |
| | NEPAL | (Kathmandu) | | President Bidhya Devi Bhandari | | |
| | NEW ZEALAND | (Wellington) | | Queen Elizabeth II | | |
| | PAPUA NEW GUINEA | (Port Moresby) | | Queen Elizabeth II | | |
| | PHILIPPINES | (Manila acr + Quezon City b + Pasay City b) | | President Rodrigo Duterte | | |
| | PAKISTAN | (Islamabad) | | President Mamnoon Hussain | | |
| | SAUDI ARABIA | (Riyadh) | | King Salman | | |
| | SINGAPORE | (Singapore) | | President Halimah Yacob | | |
| | THAILAND | (Bangkok) | | King Rama X. Vajiralongkorn | | |
| | AMERICA | (Washington-District of Columbia) | | President Donald Trump | | |
| | VIETNAM | (Hanoi) | | Nguyen Phu Trong | | |