19 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. ] :
| | UNITED ARAB EMIRATES | (Abu Dhabi ar) | | President Sheikh Khalifa bin Zayed Al Nahyan | | |
| | AUSTRALIA | (Canberra) | | Quentin Bryce | | |
| | BANGLADESH | (Dhaka a) | | President Zillur Rahman | | |
| | INDONESIA | (Jakarta a + Bogor r + Chipanas r + Yogyakarta r + Tampaksiring r) | | President Susilo Bambang Yudhoyono | | |
| | INDIA | (New Delhi a + Simla s + Bolarum w) | | President Pratibha Patil | | |
| | IRAN | (Tehran) | | Supreme Leader Ayatollah Ali Khamenei | | |
| | KENYA | (Nairobi) | | President Emilio Mwai Kibaki | | |
| | SRI LANKA | (Sri Jayewardenepura Kotte al + Colombo ejnr + Kandy r) | | President Mahinda Rajapaksa | | |
| | MADAGASCAR | (Tananarive) | | President Andry Rajoelina | | |
| | MAURITIUS | (Port Louis a + Reduit in Moka r) | | President Sir Anerood Jugnauth | | |
| | MALAYSIA | (Putrajaya aj + Kuala Lumpur ejlry) | | Sultan Abdul Halim Muadzam Shah | | |
| | MOZAMBIQUE | (Maputo) | | President Armando Guebuza | | |
| | OMAN | (Muscat) | | Sultan Qaboos bin Said | | |
| | SEYCHELLES | (Port Victoria) | | President James Michel | | |
| | SINGAPORE | (Singapore) | | President Tony Tan Keng Yam | | |
| | THAILAND | (Bangkok) | | King Rama IX Bhumibol Adulyadej | | |
| | TANZANIA | (Dodoma City aln + Dar Es Salaam jnqr) | | President Jakaya Kikwete | | |
| | YEMEN | (Sanaa) | | President Ali Abdullah Saleh | | |
| | SOUTH AFRICA | (Pretoria ae + Cape Town l + Bloemfontein j + Johannesburg d) | | President Jacob Zuma | | |