Among the 57 member countries of the Organisation of Islamic Cooperation (OIC), 49 states are denoted Muslim-majority countries, although two of whichGuinea-Bissau and Cote d'Ivoirehave less than 50% Muslim population. Outside of the Islamic world, eight more countriesCameroon, Benin, Mozambique, Togo, Uganda, Suriname, Gabon, and Guyanacomprise the 57 full members of the OIC while also being Christian-majority countries

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

Member states Continent AfricaAsiaEuropeSouth AmericaTranscontinental

Member state Joined Population Muslim percentage Area (km2) Official Languages Notes 1969 99.8% DariPashtoSuspended 1980 – March 1989 during the Soviet–Afghan War. 1969 99.1% ArabicTamazight 1969 58% ArabicFrench 196995% ArabicOriginally as . Suspended May 1979 – March 1984 after signing a peace treaty with Israel. Also known as Guinea-Conakry. 196990% French 196987% Indonesian 196999.4% PersianOriginally joined as . 196997.1% Arabic 196975% Arabic 196954% Arabic 196999% Arabic 196966% Malay 196995% BambaraFrench 1969100% Arabic 196999% ArabicTamazight 196999.3% Hausa 196998% UrduEnglishThe State of Palestine succeeded the seat of the Palestine Liberation Organization following the 1988 Palestinian Declaration of Independence.Although the capital of Palestine is Jerusalem, the seat of government of the country is located in Ramallah as the entirety of the city of Jerusalem is entirely controlled by Israel, which considers the whole city to be its capital under the 1980 Jerusalem Law and the occupation of East Jerusalem is not entirely recognized by the international community including the OIC member states; although East Jerusalem is envisioned to be the capital of a future Palestinian state, pending developments of a final peace deal between the two parties. See also the status of Jerusalem. 196999% Arabic 196995% Arabic 196996.6% French 196999.9% ArabicSomali 196997% ArabicEnglish 196999.1% Arabic 196999.8% Turkish 196999.1Pew Research Center's Religion & Public Life Project: Yemen. Pew Research Center. 2010. ArabicJoined separately as and . Both unified in 1990. 197075% Arabic 197095% Arabic 197066% Arabic 197097% ArabicOriginally joined as . Suspended August 2012 – March 2025 during the Syrian civil war. 197175% Arabic 197280% English 1974 92% Bengali 197412% French 197496.4% English 197446% Portuguese 197415% EnglishSwahiliAlso known as Burkina; formerly referred to as Upper Volta, its official name until 1984. 197565% French 197532% FrenchEnglish 197699% ComorianFrenchArabic 197699% ArabicKurdishOriginally joined as . 1976100% Dhivehi 197895% ArabicFrench 198229% French 198484% Malay 198654% English 199190% Azerbaijani 199252% Albanian 199290% KyrgyzRussian 199298% Tajiki 199296% Turkmen 199420% Portuguese 199574% KazakhRussian 199597% Uzbek 199615% Dutch 199719% French 19988% English 200142.5Pew Research Center's Religion & Public Life Project: Ivory Coast. Pew Research Center. 2010. French

Observer states

Observer state Joined Population Muslim percentage Area (km2) Languages Notes 1994 53% BosnianSerbianCroatianGiven an invitation in 2013 by the OIC to join as a full member. 1997 15% French 1979 99% TurkishSee further details 1998 7% Thai 2005 12% Russian

Withdrawn Suspended or withdrawn state Joined Notes 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 — Requested observer status in 2010.Non-Muslim majorities. — Requested observer status in 2011. — Requested observer status in 2022. — Requested full membership in 2002. — Requested observer status in 2012. — Requested observer status in 2008 and full membership in 2011. — Requested full membership in 2024. — 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.Mustafa El-Feki: http://weekly.ahram.org.eg/2005/730/in1.htm An Indo-Arab blunder? Al-Ahram, 17–23 February 2005. However, it was opposed by Pakistan. India has never made a formal application to join OIC as an observer or as a member state.Iran to view favourably India's entry into OIC : The Hindu21 July 2000. While India's potential candidacy is supported by some OIC members,Observer status for India at OIC: King Abdullah Expressindia.com, 22 January 2006. 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.Pak disapproves Saudi king's comments on India's OIC entry Rediff News, 23 January 2006. — Requested full membership in 2011. — Requested full membership in November 2016. — Requested full membership in 2002. — Requested observer status in 2013. — Requested observer status in 2008. — 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. — Requested observer status in 2008. — Requested observer status in 2002. — Requested observer status in 2008.

Notes

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