Member states of the Organisation of Islamic Cooperation

The Organisation of Islamic Cooperation founded in 1969. It has 57 members. 49 of the member countries have a Muslim majority although two of them namely, Guinea-Bissau and Cote d'Ivoire, have less than 50% Muslim population. Cameroon, Benin, Mozambique, Togo, Uganda, Suriname, Gabon, and Guyana are the full members with Christian majority populations.

Member states of the Organisation of Islamic Cooperation
CategorySovereign state
LocationOrganisation of Islamic Cooperation
Created
  • 1969
Number57 members (49 Muslim majority and 8 Christian majority)
5 observer states (3 non-Muslim majority and 2 Muslim majority)
Several non-Muslim member/observer candidates (as of 2025)
Possible types
  • Republics (47)
  • Monarchies (10)
Populations 2.04 billion

The collective population of OIC member states is over 2.04 billion as of 2025.

Member states

Continent
Africa Asia Europe South America Transcontinental
Member state
Joined
Population
Muslim percentage
Area (km2)
Official Languages
Notes
Afghanistan
Capital: Kabul
1969 41,144,133 99.8% 652,230 Dari
Pashto
Suspended 1980 – March 1989 during the Soviet–Afghan War.
Algeria
Capital: Algiers
1969 45,847,599 99.1% 2,381,741 Arabic
Tamazight
Chad
Capital: N'Djamena
1969 17,616,172 58% 1,284,000 Arabic
French
Egypt
Capital: Cairo
1969 107,206,514 95% 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 90% 245,857 French
Indonesia
Capital: Jakarta
1969 280,813,676 87% 1,904,569 Indonesian
Iran
Capital: Tehran
1969 86,708,850 99.4% 1,648,195 Persian Originally joined as Pahlavi Iran.
Jordan
Capital: Amman
1969 10,458,701 97.1% 89,342 Arabic
Kuwait
Capital: Kuwait City
1969 4,429,966 75% 17,818 Arabic
Lebanon
Capital: Beirut
1969 6,748,419 54% 10,452 Arabic
Libya
Capital: Tripoli
1969 7,107,348 99% 1,759,540 Arabic
Malaysia
Capital: Kuala Lumpur
1969 33,412,468 66% 330,803 Malay
Mali
Capital: Bamako
1969 21,723,855 95% 1,240,192 Bambara
French
Mauritania
Capital: Nouakchott
1969 4,957,932 100% 1,030,700 Arabic
Morocco
Capital: Rabat
1969 38,013,335 99% 446,550 Arabic
Tamazight
Niger
Capital: Niamey
1969 17,138,707 99.3% 1,267,000 French
Pakistan
Capital: Islamabad
1969 207,774,520 98% 881,912 Urdu
English
 Palestine
Capital: Jerusalem
1969 4,420,549 99% 6,220 Arabic
Saudi Arabia
Capital: Riyadh
1969 29,994,272 95% 2,149,690 Arabic
Senegal
Capital: Dakar
1969 12,873,601 96.6% 196,722 French
Somalia
Capital: Mogadishu
1969 10,806,000 99.9% 637,657 Arabic
Somali
Sudan
Capital: Khartoum
1969 37,289,406 97% 1,886,068 Arabic
English
Tunisia
Capital: Tunis
1969 10,886,500 99.1% 163,610 Arabic
Turkey
Capital: Ankara
1969 76,667,864 99.8% 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 75% 765 Arabic
Oman
Capital: Muscat
1970 4,020,000 95% 309,500 Arabic
Qatar
Capital: Doha
1970 2,174,035 66% 11,586 Arabic
Syria
Capital: Damascus
1970 21,987,000 97% 185,180 Arabic Originally joined as Ba'athist Syria. Suspended August 2012 – March 2025 during the Syrian civil war.
United Arab Emirates
Capital: Abu Dhabi
1971 9,446,000 75% 83,600 Arabic
Sierra Leone
Capital: Freetown
1972 6,190,280 80% 71,740 English
Bangladesh
Capital: Dhaka
1974 165,158,616 92% 147,570 Bengali
Gabon
Capital: Libreville
1974 1,711,000 12% 267,668 French
The Gambia
Capital: Banjul
1974 1,882,450 96.4% 11,295 English
Guinea-Bissau
Capital: Bissau
1974 1,746,000 46% 36,125 Portuguese
Uganda
Capital: Kampala
1974 47,729,952 15% 241,550 English
Swahili
Burkina Faso
Capital: Ouagadougou
1975 22,489,126 65% 274,200 French
Cameroon
Capital: Yaoundé
1975 30,135,732 32% 475,442 French
English
Comoros
Capital: Moroni
1976 850,886 99% 2,235 Comorian
French
Arabic
Iraq
Capital: Baghdad
1976 43,500,000 99% 438,317 Arabic
Kurdish
Originally joined as Ba'athist Iraq.
Maldives
Capital: Malé
1976 317,280 100% 300 Dhivehi
Djibouti
Capital: Djibouti
1978 886,000 95% 23,200 Arabic
French
Benin
Capital: Porto-Novo
1982 9,988,068 29% 112,622 French
Brunei
Capital: Bandar Seri Begawan
1984 393,162 84% 5,765 Malay
Nigeria
Capital: Abuja
1986 206,630,269 54% 923,768 English
Azerbaijan
Capital: Baku
1991 9,477,100 90% 86,600 Azerbaijani
Albania
Capital: Tirana
1992 2,821,977 52% 28,748 Albanian
Kyrgyzstan
Capital: Bishkek
1992 5,976,570 90% 199,951 Kyrgyz
Russian
Tajikistan
Capital: Dushanbe
1992 8,860,000 98% 143,100 Tajiki
Turkmenistan
Capital: Ashgabat
1992 5,607,000 96% 488,100 Turkmen
Mozambique
Capital: Maputo
1994 23,700,715 20% 801,590 Portuguese
Kazakhstan
Capital: Astana
1995 17,244,000 74% 2,724,900 Kazakh
Russian
Uzbekistan
Capital: Tashkent
1995 33,492,800 97% 447,400 Uzbek
Suriname
Capital: Paramaribo
1996 534,189 15% 163,820 Dutch
Togo
Capital: Lomé
1997 6,993,000 19% 56,785 French
Guyana
Capital: Georgetown
1998 784,894 8% 214,969 English
Ivory Coast
Capital: Yamoussoukro
2001 23,202,000 42.5 322,463 French

Observer states

Observer state
Joined
Population
Muslim percentage
Area (km2)
Languages
Notes
Bosnia and Herzegovina
Capital: Sarajevo
1994 3,791,622 53% 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 15% 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 7% 513,120 Thai
Russia
Capital: Moscow
2005 146,048,500 12% 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 Notes
League of Arab States 1975
United Nations 1976
Non-Aligned Movement 1977
African Union 1977
Economic Cooperation Organization 1995

Collaborating organization

In 2013, the OIC created a permanent observer mission to the EU. In 2016, the EU accredited a Head of Delegation to the OIC.

Membership attempts

  • Belarus — Requested observer status in 2010.
  • Brazil — Requested observer status in 2011.
  • Cambodia — Requested observer status in 2022.
  • 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.
  • Ethiopia — Requested full membership in 2024.
  • 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.
  • Montenegro — Requested observer status in 2013.
  •   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[citation needed]. 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.

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