# Member states of the Organisation of Islamic Cooperation

The Organisation of Islamic Cooperation founded in 1969 has 57 members, 56 of which are also member states of the United Nations, with 48 countries having a Muslim majority. Some member countries, especially in West Africa and South America, such as Ivory Coast, Guyana, Gabon, Mozambique, Nigeria, Suriname, Togo and Uganda – though with large Muslim populations – are not necessarily Muslim majority countries. A few countries with significant Muslim populations, such as Russia and Thailand, sit as Observer States.
The collective population of OIC member states is over 2 billion as of 2022.

## Member states

Continent :
| Africa | Asia | Europe | South America | Transcontinental |
| Member state | Joined | Population | Muslim percentage | Area (km$^2$) | Official Languages | Notes |
| Afghanistan Capital: Kabul | 1969 | 41,144,133 | 99.7 | 652,230 | Dari Pashto | Suspended 1980 – March 1989 during the Soviet–Afghan War. |
| Algeria Capital: Algiers | 1969 | 45,847,599 | 97.9 | 2,381,741 | Arabic Tamazight | |
| Chad Capital: N'Djamena | 1969 | 17,616,172 | 55.3 | 1,284,000 | Arabic French | |
| Egypt Capital: Cairo | 1969 | 107,206,514 | 94.9 | 1,002,450 | Arabic | Originally as United Arab Republic. Suspended May 1979 – March 1984 after signing a peace treaty with Israel. |
| Guinea Capital: Conakry | 1969 | 14,033,298 | 84.4 | 245,857 | French | |
| Indonesia Capital: Jakarta | 1969 | 280,813,676 | 87.2 | 1,904,569 | Indonesian | |
| Iran Capital: Tehran | 1969 | 86,708,850 | 99.5 | 1,648,195 | Persian | |
| Jordan Capital: Amman | 1969 | 10,458,701 | 97.2 | 89,342 | Arabic | |
| Kuwait Capital: Kuwait City | 1969 | 4,429,966 | 74.1 | 17,818 | Arabic | |
| Lebanon Capital: Beirut | 1969 | 6,748,419 | 61.3 | 10,452 | Arabic | |
| Libya Capital: Tripoli | 1969 | 7,107,348 | 96.6 | 1,759,540 | Arabic | |
| Malaysia Capital: Kuala Lumpur | 1969 | 33,412,468 | 63.7 | 330,803 | Malay | |
| Mali Capital: Bamako | 1969 | 21,723,855 | 94.4 | 1,240,192 | Bambara French | |
| Mauritania Capital: Nouakchott | 1969 | 4,957,932 | 99.1 | 1,030,700 | Arabic | |
| Morocco Capital: Rabat | 1969 | 38,013,335 | 99.9 | 446,550 | Arabic Tamazight | |
| Niger Capital: Niamey | 1969 | 17,138,707 | 98.4 | 1,267,000 | French | |
| Pakistan Capital: Islamabad | 1969 | 207,774,520 | 96.4 | 881,912 | Urdu English | |
| Palestine | 1969 | 4,420,549 | 97.6 | 6,220 | Arabic | |
| Saudi Arabia Capital: Riyadh | 1969 | 29,994,272 | 93.0 | 2,149,690 | Arabic | |
| Senegal Capital: Dakar | 1969 | 12,873,601 | 96.4 | 196,722 | French | |
| Somalia Capital: Mogadishu | 1969 | 10,806,000 | 99.8 | 637,657 | Arabic Somali | |
| Sudan Capital: Khartoum | 1969 | 37,289,406 | 90.7 | 1,886,068 | Arabic English | |
| Tunisia Capital: Tunis | 1969 | 10,886,500 | 99.5 | 163,610 | Arabic | |
| Turkey Capital: Ankara | 1969 | 76,667,864 | 97.8 | 783,562 | Turkish | |
| Yemen Capital: Sana'a | 1969 | 25,235,000 | 99.1 | 527,968 | Arabic | Joined separately as North Yemen and South Yemen. Both unified in 1990. |
| Bahrain Capital: Manama | 1970 | 1,234,571 | 70.3 | 765 | Arabic | |
| Oman Capital: Muscat | 1970 | 4,020,000 | 85.9 | 309,500 | Arabic | |
| Qatar Capital: Doha | 1970 | 2,174,035 | 67.7 | 11,586 | Arabic | |
| Syria Capital: Damascus | 1970 | 21,987,000 | 92.8 | 185,180 | Arabic | Suspended August 2012 – March 2025 during the Syrian civil war. |
| United Arab Emirates Capital: Abu Dhabi | 1971 | 9,446,000 | 76.9 | 83,600 | Arabic | |
| Sierra Leone Capital: Freetown | 1972 | 6,190,280 | 78.0 | 71,740 | English | |
| Bangladesh Capital: Dhaka | 1974 | 165,158,616 | 90.4 | 147,570 | Bengali | |
| Gabon Capital: Libreville | 1974 | 1,711,000 | 11.2 | 267,668 | French | |
| The Gambia Capital: Banjul | 1974 | 1,882,450 | 95.1 | 11,295 | English | |
| Guinea-Bissau Capital: Bissau | 1974 | 1,746,000 | 45.1 | 36,125 | Portuguese | |
| Uganda Capital: Kampala | 1974 | 47,729,952 | 11.5 | 241,550 | English Swahili | |
| Burkina Faso Capital: Ouagadougou | 1975 | 22,489,126 | 61.6 | 274,200 | French | |
| Cameroon Capital: Yaoundé | 1975 | 30,135,732 | 18.3 | 475,442 | French English | |
| Comoros Capital: Moroni | 1976 | 850,886 | 98.3 | 2,235 | Comorian French Arabic | |
| Iraq Capital: Baghdad | 1976 | 43,500,000 | 99.0 | 438,317 | Arabic Kurdish | |
| Maldives Capital: Malé | 1976 | 317,280 | 98.4 | 300 | Dhivehi | |
| Djibouti Capital: Djibouti | 1978 | 886,000 | 96.9 | 23,200 | Arabic French | |
| Benin Capital: Porto-Novo | 1982 | 9,988,068 | 23.8 | 112,622 | French | |
| Brunei Capital: Bandar Seri Begawan | 1984 | 393,162 | 75.1 | 5,765 | Malay | |
| Nigeria Capital: Abuja | 1986 | 206,630,269 | 53.5 | 923,768 | English | |
| Azerbaijan Capital: Baku | 1991 | 9,477,100 | 96.9 | 86,600 | Azerbaijani | |
| Albania Capital: Tirana | 1992 | 2,821,977 | 56.7 | 28,748 | Albanian | |
| Kyrgyzstan Capital: Bishkek | 1992 | 5,976,570 | 88.0 | 199,951 | Kyrgyz Russian | |
| Tajikistan Capital: Dushanbe | 1992 | 8,860,000 | 96.7 | 143,100 | Tajiki | |
| Turkmenistan Capital: Ashgabat | 1992 | 5,607,000 | 93.0 | 488,100 | Turkmen | |
| Mozambique Capital: Maputo | 1994 | 23,700,715 | 18.0 | 801,590 | Portuguese | |
| Kazakhstan Capital: Astana | 1995 | 17,244,000 | 70.4 | 2,724,900 | Kazakh Russian | |
| Uzbekistan Capital: Tashkent | 1995 | 33,492,800 | 96.7 | 447,400 | Uzbek | |
| Suriname Capital: Paramaribo | 1996 | 534,189 | 15.2 | 163,820 | Dutch | |
| Togo Capital: Lomé | 1997 | 6,993,000 | 14.0 | 56,785 | French | |
| Guyana Capital: Georgetown | 1998 | 784,894 | 6.4 | 214,969 | English | |
| Côte d'Ivoire Capital: Yamoussoukro | 2001 | 23,202,000 | 42.5 | 322,463 | French | |

## Observer states

| Observer state | Joined | Population | Muslim percentage | Area (km$^2$) | Languages | Notes |
| Bosnia and Herzegovina Capital: Sarajevo | 1994 | 3,791,622 | 50.7 | 51,209 | Bosnian Serbian Croatian | Given an invitation in 2013 by the OIC to join as a full member. |
| Central African Republic Capital: Bangui | 1997 | 4,709,000 | 8.5 | 622,984 | French | |
| Northern Cyprus Capital: North Nicosia | 1979 | 382,836 | 99 | 3,355 | Turkish | See further details |
| Thailand Capital: Bangkok | 1998 | 64,456,700 | 5.5 | 513,120 | Thai | |
| Russia Capital: Moscow | 2005 | 146,048,500 | 10.0 | 17,125,242 | Russian | |

## Withdrawn

| Suspended or withdrawn state | Joined | Notes |
| Zanzibar | 1993 | Withdrew August 1993 |

## Observer organisations and communities

| Organisation or community | Joined | Notes |
| Moro National Liberation Front | 1977 | Blocking membership of the Philippines |

## Observer Islamic institutions

| Islamic institution | Joined | Notes |
| Parliamentary Union of the OIC Member States | 2000 | |
| Islamic Conference Youth Forum for Dialogue and Cooperation | 2005 | |

## Observer international organisations

| Organisation | Joined |
| League of Arab States | 1975 |
| United Nations | 1976 |
| Non-Aligned Movement | 1977 |
| African Union | 1977 |
| Economic Cooperation Organization | 1995 |

## Collaborating organization

* Organisation
* European Union

## Membership attempts

* Belarus – Requested observer status in 2010.
* Brazil – Requested observer status in 2011.
* Central African Republic – Requested full membership in 2002.
* China – Requested observer status in 2012.
* Democratic Republic of Congo – Requested observer status in 2008 and full membership in 2011.
* India – India, where Muslims are a very big population had shown an interest in joining the OIC as a member state at the time of its formation. However, it was opposed by Pakistan. India has never made a formal application to join OIC as an observer or as a member state. While India's potential candidacy is supported by some OIC members, Pakistan's strong opposition and threat to boycott the OIC has effectively led to India's inclusion in the OIC being blocked. The Pakistan Foreign Office has argued that India's inclusion in OIC would violate the rules of the OIC, which require that an aspirant state should not have an ongoing conflict with a member state.
* Kenya – Requested full membership in 2011.
* Liberia – Requested full membership in November 2016.
* Mauritius – Requested full membership in 2002.
* Nepal – Requested observer status in 2008.
* Philippines – Requested observer status in 2008. The Philippine government has made attempts to join the OIC, but this is opposed by the Moro National Liberation Front, an OIC observer located in the Philippines. The MNLF claims that Philippine membership is unnecessary. In 2009, the country's bid received stronger support and has been advocated by Indonesia, Iran, Malaysia, and the United Arab Emirates, among others. In 2019, one of the leaders of the MNLF, Nir Misuari, was appointed as a special envoy to the organization.
* Serbia – Requested observer status in 2008.
* South Africa – Requested observer status in 2002.
* Sri Lanka – Requested observer status in 2008.