31 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 |  | |
 |  | BANGLADESH | (Dhaka a) |  | President Abdul Hamid | | |
 |  | BAHRAIN | (Manamah a + Sakhir r) |  | King Sheikh Hamad bin Isa Al Khalifah | | |
 |  | BRUNEI DARUSSALAM | (Bandar Seri Begawan) |  | Sultan Hassanal Bolkiah | | |
 |  | BHUTAN | (Thimphu a + Paro s) |  | King Jigme Khesar Namgyal Wangchuk | | |
 |  | CHINA | (Beijing) |  | Xi Jinping | | |
 |  | INDONESIA | (Jakarta akn + Nusantara f + Bogor r + Chipanas r + Yogyakarta r + Tampaksiring r) |  | President Joko Widodo | | |
 |  | INDIA | (New Delhi a + Simla s + Bolarum w + Mysore r) |  | President Ram Nath Kovind | | |
 |  | IRAN | (Tehran a + Qum y) |  | Supreme Leader Ayatollah Ali Khamenei | | |
 |  | JAPAN | (Tokyo an + Kyoto r + Nasu s + Shimoda s + Hayama w) |  | Emperor Naruhito | | |
 |  | KYRGYZSTAN | (Bishkek) |  | President Sadyr Zhaparov | | |
 |  | CAMBODIA | (Phnom Penh a + Siem Reap r) |  | King Norodom Sihamoni | | |
 |  | 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 | | |
 |  | LAOS | (Vientiane) |  | Thongloun Sisoulith | | |
 |  | SRI LANKA | (Sri Jayewardenepura Kotte al + Colombo ejnr + Kandy r) |  | President Gotabaya Rajapaksa | | |
 |  | MYANMAR | (Naypyidaw a + Rangoon bny) |  | General Min Aung Hlaing | | |
 |  | MONGOLIA | (Ulan-Bator) |  | President Ukhnaagiin Khurelsukh | | |
 |  | MALAYSIA | (Putrajaya aj + Kuala Lumpur ejklnry) |  | Sultan Abdullah Shah | | |
 |  | OMAN | (Muscat) |  | Sultan Haitham bin Tarik | | |
 |  | PHILIPPINES | (Manila acr + Quezon City b + Pasay City b) |  | President Rodrigo Duterte | | |
 |  | PAKISTAN | (Islamabad a + Lahore ky + Rawalpindi m) |  | President Arif Alvi | | |
 |  | QATAR | (Doha) |  | Emir Sheikh Tamim bin Hamad Al Thani | | |
 |  | RUSSIA | (Moscow a + Saint Petersburg d + Sochi s + Valdai s) |  | President Vladimir Putin |  | |
 |  | SAUDI ARABIA | (Riyadh a + Mecca y) |  | King Salman | | |
 |  | SINGAPORE | (Singapore) |  | President Halimah Yacob | | |
 |  | THAILAND | (Bangkok) |  | King Rama X. Vajiralongkorn | | |
 |  | TAJIKISTAN | (Dushanbe) |  | President Emomali Rakhmonov | | |
 |  | UZBEKISTAN | (Tashkent a) |  | Shavkat Mirziyayev | | |
 |  | VIETNAM | (Hanoi) |  | Nguyen Phu Trong | | |
Sources are available upon request.
