57 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 Zayed II bin Sultan Al Nahyan |  | |
 |  | AFGHANISTAN | (Kabul) |  | President Hamid Karzai |  | |
 |  | ALBANIA | (Tirana) |  | President Alfred Moisiu |  | |
 |  | AZERBAIJAN | (Baku) |  | President Geydar Aliyev |  | |
 |  | BANGLADESH | (Dhaka a) |  | President Iajuddin Ahmed |  | |
 |  | BURKINA FASO | (Ouagadougou) |  | President Blaise Compaore |  | |
 |  | BAHRAIN | (Manamah a + Sakhir r) |  | King Sheikh Hamad bin Isa Al Khalifah |  | |
 |  | BENIN | (Porto Novo a + Cotonou ilnqr) |  | President Mathieu Kerekou |  | |
 |  | BRUNEI DARUSSALAM | (Bandar Seri Begawan) |  | Sultan Hassanal Bolkiah |  | |
 |  | COTE D'IVOIRE | (Yamoussoukro a + Abidjan djkln) |  | President Laurent Gbagbo |  | |
 |  | CAMEROON | (Yaounde) |  | President Paul Biya |  | |
 |  | JIBUTI | (Jibuti) |  | President Ismail Omar Guelleh |  | |
 |  | ALGERIA | (Algiers a + El Biar d + El Mouradia r) |  | President Abdelaziz Bouteflika |  | |
 |  | EGYPT | (Cairo a + Alexandria r) |  | President Hosni Mubarak |  | |
 |  | GABON | (Libreville) |  | President Omar Bongo |  | |
 |  | THE GAMBIA | (Banjul) |  | President Yahya Jammeh |  | |
 |  | GUINEA | (Conakry) |  | President Lansana Conte |  | |
 |  | GUINEA-BISSAU | (Bissau) |  | President Kumba Yalla |  | |
 |  | GUYANA | (Georgetown) |  | President Bharrat Jagdeo |  | |
 |  | INDONESIA | (Jakarta a + Bogor r + Chipanas r + Yogyakarta r + Tampaksiring r) |  | President Megawati Sukarnoputri |  | |
 |  | IRAQ | (Baghdad a + Camp Victory m) |  | President George Walker Bush |  | |
 |  | IRAN | (Tehran a + Qum y) |  | Supreme Leader Ayatollah Ali Khamenei |  | |
 |  | JORDAN | (Amman) |  | King Abdullah II |  | |
 |  | KYRGYZSTAN | (Bishkek) |  | President Askar Akayev |  | |
 |  | COMOROS | (Moroni a) |  | President Azali Assoumani |  | |
 |  | KUWAIT | (Kuwait City a + Bayan lr) |  | Emir Sheikh Jabir III Al Ahmad Al Jabir Al Sabah |  | |
 |  | KAZAKHSTAN | (Astana a) |  | President Nursultan Nazarbayev |  | |
 |  | LEBANON | (Beirut a + Yarze m + Hadeth d) |  | President Emile Lahoud |  | |
 |  | LIBYA | (Tripoli a) |  | Guide Muammar Gaddafi |  | |
 |  | MOROCCO | (Rabat a) |  | King Muhammad VI |  | |
 |  | MALI | (Bamako) |  | President Amadou Toumani Toure |  | |
 |  | MAURITANIA | (Nouakchott) |  | President Maaouya Ould Sid'Ahmed Taya |  | |
 |  | MALDIVES | (Male) |  | President Maumoon Abdul Gayoom |  | |
 |  | MALAYSIA | (Putrajaya aj + Kuala Lumpur ejklnry) |  | Raja Syed Sirajuddin I |  | |
 |  | MOZAMBIQUE | (Maputo) |  | President Joaquim Chissano |  | |
 |  | NIGER | (Niamey) |  | President Mamadou Tandja |  | |
 |  | NIGERIA | (Abuja a + Lagos kn) |  | President Olusegun Obasanjo |  | |
 |  | OMAN | (Muscat) |  | Sultan Qaboos bin Said |  | |
 |  | PAKISTAN | (Islamabad a + Lahore ky) |  | President Pervez Musharraf |  | |
 |  | PALESTINE | (Ramallah qr + Gaza br + (East Jerusalem)) |  | President Yasser Arafat |  | |
 |  | QATAR | (Doha) |  | Emir Sheikh Hamad bin Khalifah Al Thani |  | |
 |  | SAUDI ARABIA | (Riyadh a + Mecca y) |  | King Fahd |  | |
 |  | SUDAN | (Khartoum a) |  | President Omar Al-Bashir |  | |
 |  | SIERRA LEONE | (Freetown) |  | President Ahmad Tejan Kabbah |  | |
 |  | SENEGAL | (Dakar) |  | President Abdoulaye Wade |  | |
 |  | SOMALIA | (Mogadishu) |  | President Abdiqasim Salad Hassan |  | |
 |  | SURINAME | (Paramaribo) |  | President Ronald Venetiaan |  | |
 |  | SYRIA | (Damascus) |  | President Bashar Al-Assad |  | |
 |  | CHAD | (Ndjamena) |  | President Idriss Deby |  | |
 |  | TOGO | (Lome) |  | President Gnassingbe Eyadema |  | |
 |  | TAJIKISTAN | (Dushanbe) |  | President Emomali Rakhmonov |  | |
 |  | TURKMENISTAN | (Ashgabat) |  | President Turkmenbashi Saparmurat Niyazov |  | |
 |  | TUNISIA | (Tunis) |  | President Zine El Abidine Ben Ali |  | |
 |  | TURKEY | (Ankara a) |  | President Ahmet Necdet Sezer |  | |
 |  | UGANDA | (Kampala a + Entebbe r) |  | President Yoweri Museveni |  | |
 |  | UZBEKISTAN | (Tashkent a + Durman r) |  | President Islam Karimov |  | |
 |  | YEMEN | (Sanaa a) |  | President Ali Abdullah Saleh |  | |