Member states of the Organisation of Islamic Cooperation
Updated: 5/20/2026, 8:15:53 PM Wikipedia source
Among the 57 member countries of the Organisation of Islamic Cooperation (OIC), 49 states are denoted Muslim-majority countries, although two of which—Guinea-Bissau and Cote d'Ivoire—have less than 50% Muslim population. Outside of the Islamic world, eight more countries—Cameroon, Benin, Mozambique, Togo, Uganda, Suriname, Gabon, and Guyana—comprise the 57 full members of the OIC while also being Christian-majority countries The collective population of OIC member states is over 2 billion as of 2025.
Infobox
Category
Sovereign state
Location
Organisation of Islamic Cooperation
Created
1969
Number
57 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 billion
Tables
· Member states
Africa
Africa
Continent
Africa
Continent
Asia
Continent
Europe
Continent
South America
Continent
Transcontinental
| Continent | |||||
| Africa | Asia | Europe | South America | Transcontinental | |
· Member states
Afghanistan
Capital: Kabul
Afghanistan
Capital: Kabul
Member state
Afghanistan
Capital: Kabul
Joined
1969
Population
41,144,133
Muslim percentage
98 %
Area (km2)
652,230
Official Languages
Dari
Pashto
Notes
Suspended 1980 – March 1989 during the Soviet–Afghan War.
Algeria
Capital: Algiers
Algeria
Capital: Algiers
Member state
Algeria
Capital: Algiers
Joined
1969
Population
45,847,599
Muslim percentage
98 %
Area (km2)
2,381,741
Official Languages
Arabic
Tamazight
Chad
Capital: N'Djamena
Chad
Capital: N'Djamena
Member state
Chad
Capital: N'Djamena
Joined
1969
Population
19,319,000
Muslim percentage
58%
Area (km2)
1,284,000
Official Languages
Arabic
French
Egypt
Capital: Cairo
Egypt
Capital: Cairo
Member state
Egypt
Capital: Cairo
Joined
1969
Population
107,206,514
Muslim percentage
95%
Area (km2)
1,002,450
Official Languages
Arabic
Notes
Originally as United Arab Republic. Suspended May 1979 – March 1984 after signing a peace treaty with Israel.
Guinea
Capital: Conakry
Guinea
Capital: Conakry
Member state
Guinea
Capital: Conakry
Joined
1969
Population
14,033,298
Muslim percentage
91 %
Area (km2)
245,857
Official Languages
French
Indonesia
Capital: Jakarta
Indonesia
Capital: Jakarta
Member state
Indonesia
Capital: Jakarta
Joined
1969
Population
280,813,676
Muslim percentage
87 %
Area (km2)
1,904,569
Official Languages
Indonesian
Iran
Capital: Tehran
Iran
Capital: Tehran
Member state
Iran
Capital: Tehran
Joined
1969
Population
86,708,850
Muslim percentage
98 %
Area (km2)
1,648,195
Official Languages
Persian
Notes
Originally joined as Pahlavi Iran.
Jordan
Capital: Amman
Jordan
Capital: Amman
Member state
Jordan
Capital: Amman
Joined
1969
Population
10,458,701
Muslim percentage
97 %
Area (km2)
89,342
Official Languages
Arabic
Kuwait
Capital: Kuwait City
Kuwait
Capital: Kuwait City
Member state
Kuwait
Capital: Kuwait City
Joined
1969
Population
4,429,966
Muslim percentage
75 %
Area (km2)
17,818
Official Languages
Arabic
Lebanon
Capital: Beirut
Lebanon
Capital: Beirut
Member state
Lebanon
Capital: Beirut
Joined
1969
Population
6,748,419
Muslim percentage
55 %
Area (km2)
10,452
Official Languages
Arabic
Libya
Capital: Tripoli
Libya
Capital: Tripoli
Member state
Libya
Capital: Tripoli
Joined
1969
Population
7,107,348
Muslim percentage
98 %
Area (km2)
1,759,540
Official Languages
Arabic
Malaysia
Capital: Kuala Lumpur
Malaysia
Capital: Kuala Lumpur
Member state
Malaysia
Capital: Kuala Lumpur
Joined
1969
Population
33,412,468
Muslim percentage
66 %
Area (km2)
330,803
Official Languages
Malay
Mali
Capital: Bamako
Mali
Capital: Bamako
Member state
Mali
Capital: Bamako
Joined
1969
Population
21,723,855
Muslim percentage
95 %
Area (km2)
1,240,192
Official Languages
Bambara
French
Mauritania
Capital: Nouakchott
Mauritania
Capital: Nouakchott
Member state
Mauritania
Capital: Nouakchott
Joined
1969
Population
4,957,932
Muslim percentage
98 %
Area (km2)
1,030,700
Official Languages
Arabic
Morocco
Capital: Marrakesh
Morocco
Capital: Marrakesh
Member state
Morocco
Capital: Marrakesh
Joined
1969
Population
38,013,335
Muslim percentage
98 %
Area (km2)
446,550
Official Languages
Arabic
Tamazight
Niger
Capital: Niamey
Niger
Capital: Niamey
Member state
Niger
Capital: Niamey
Joined
1969
Population
26,342,784
Muslim percentage
98 %
Area (km2)
1,267,000
Official Languages
Hausa
Pakistan
Capital: Islamabad
Pakistan
Capital: Islamabad
Member state
Pakistan
Capital: Islamabad
Joined
1969
Population
241,499,431
Muslim percentage
96 %
Area (km2)
881,912
Official Languages
Urdu
English
Palestine
Capital: Jerusalem
Palestine
Capital: Jerusalem
Member state
Palestine
Capital: Jerusalem
Joined
1969
Population
4,420,549
Muslim percentage
98 %
Area (km2)
6,220
Official Languages
Arabic
Saudi Arabia
Capital: Riyadh
Saudi Arabia
Capital: Riyadh
Member state
Saudi Arabia
Capital: Riyadh
Joined
1969
Population
34,220,000
Muslim percentage
95 %
Area (km2)
2,149,690
Official Languages
Arabic
Senegal
Capital: Dakar
Senegal
Capital: Dakar
Member state
Senegal
Capital: Dakar
Joined
1969
Population
18,077,537
Muslim percentage
96 %
Area (km2)
196,722
Official Languages
French
Somalia
Capital: Merce
Somalia
Capital: Merce
Member state
Somalia
Capital: Merce
Joined
1969
Population
19,000,000
Muslim percentage
93 %
Area (km2)
637,657
Official Languages
Arabic
Somali
Sudan
Capital: Khartoum
Sudan
Capital: Khartoum
Member state
Sudan
Capital: Khartoum
Joined
1969
Population
50,000,000
Muslim percentage
96 %
Area (km2)
1,886,068
Official Languages
Arabic
English
Tunisia
Capital: Tunis
Tunisia
Capital: Tunis
Member state
Tunisia
Capital: Tunis
Joined
1969
Population
11,400,000
Muslim percentage
98 %
Area (km2)
163,610
Official Languages
Arabic
Turkey
Capital: Ankara
Turkey
Capital: Ankara
Member state
Turkey
Capital: Ankara
Joined
1969
Population
86,000,000
Muslim percentage
98 %
Area (km2)
783,562
Official Languages
Turkish
Yemen
Capital: Sana'a
Yemen
Capital: Sana'a
Member state
Yemen
Capital: Sana'a
Joined
1969
Population
25,235,000
Muslim percentage
98
Area (km2)
527,968
Official Languages
Arabic
Notes
Joined separately as North Yemen and South Yemen. Both unified in 1990.
Bahrain
Capital: Manama
Bahrain
Capital: Manama
Member state
Bahrain
Capital: Manama
Joined
1970
Population
1,234,571
Muslim percentage
75%
Area (km2)
765
Official Languages
Arabic
Oman
Capital: Muscat
Oman
Capital: Muscat
Member state
Oman
Capital: Muscat
Joined
1970
Population
4,020,000
Muslim percentage
95 %
Area (km2)
309,500
Official Languages
Arabic
Qatar
Capital: Doha
Qatar
Capital: Doha
Member state
Qatar
Capital: Doha
Joined
1970
Population
2,174,135
Muslim percentage
66 %
Area (km2)
11,586
Official Languages
Arabic
Syria
Capital: Damascus
Syria
Capital: Damascus
Member state
Syria
Capital: Damascus
Joined
1970
Population
21,987,321
Muslim percentage
96 %
Area (km2)
185,180
Official Languages
Arabic
Notes
Originally joined as Ba'athist Syria. Suspended August 2012 – March 2025 during the Syrian civil war.
United Arab Emirates
Capital: Abu Dhabi
United Arab Emirates
Capital: Abu Dhabi
Member state
United Arab Emirates
Capital: Abu Dhabi
Joined
1971
Population
10,446,321
Muslim percentage
75%
Area (km2)
83,600
Official Languages
Arabic
Sierra Leone
Capital: Freetown
Sierra Leone
Capital: Freetown
Member state
Sierra Leone
Capital: Freetown
Joined
1972
Population
8,400,512
Muslim percentage
81 %
Area (km2)
71,740
Official Languages
English
Bangladesh
Capital: Dhaka
Bangladesh
Capital: Dhaka
Member state
Bangladesh
Capital: Dhaka
Joined
1974
Population
165,158,616
Muslim percentage
92 %
Area (km2)
147,570
Official Languages
Bengali
Gabon
Capital: Libreville
Gabon
Capital: Libreville
Member state
Gabon
Capital: Libreville
Joined
1974
Population
1,711,000
Muslim percentage
12%
Area (km2)
267,668
Official Languages
French
The Gambia
Capital: Banjul
The Gambia
Capital: Banjul
Member state
The Gambia
Capital: Banjul
Joined
1974
Population
1,882,450
Muslim percentage
96 %
Area (km2)
11,295
Official Languages
English
Guinea-Bissau
Capital: Bissau
Guinea-Bissau
Capital: Bissau
Member state
Guinea-Bissau
Capital: Bissau
Joined
1974
Population
1,746,321
Muslim percentage
46%
Area (km2)
36,125
Official Languages
Portuguese
Uganda
Capital: Kampala
Uganda
Capital: Kampala
Member state
Uganda
Capital: Kampala
Joined
1974
Population
47,729,952
Muslim percentage
15%
Area (km2)
241,550
Official Languages
English
Swahili
Burkina Faso
Capital: Ouagadougou
Burkina Faso
Capital: Ouagadougou
Member state
Burkina Faso
Capital: Ouagadougou
Joined
1975
Population
22,489,126
Muslim percentage
65 %
Area (km2)
274,200
Official Languages
French
Cameroon
Capital: Yaoundé
Cameroon
Capital: Yaoundé
Member state
Cameroon
Capital: Yaoundé
Joined
1975
Population
30,135,732
Muslim percentage
32 %
Area (km2)
475,442
Official Languages
French
English
Comoros
Capital: Moroni
Comoros
Capital: Moroni
Member state
Comoros
Capital: Moroni
Joined
1976
Population
1,385,886
Muslim percentage
95 %
Area (km2)
2,235
Official Languages
Comorian
French
Arabic
Iraq
Capital: Baghdad
Iraq
Capital: Baghdad
Member state
Iraq
Capital: Baghdad
Joined
1976
Population
43,500,000
Muslim percentage
98 %
Area (km2)
438,317
Official Languages
Arabic
Kurdish
Notes
Originally joined as Ba'athist Iraq.
Maldives
Capital: Malé
Maldives
Capital: Malé
Member state
Maldives
Capital: Malé
Joined
1976
Population
1,317,281
Muslim percentage
98 %
Area (km2)
300
Official Languages
Dhivehi
Djibouti
Capital: Djibouti
Djibouti
Capital: Djibouti
Member state
Djibouti
Capital: Djibouti
Joined
1978
Population
11,886,321
Muslim percentage
93 %
Area (km2)
23,200
Official Languages
Arabic
French
Benin
Capital: Porto-Novo
Benin
Capital: Porto-Novo
Member state
Benin
Capital: Porto-Novo
Joined
1982
Population
14,111,000
Muslim percentage
29%
Area (km2)
112,622
Official Languages
French
Brunei
Capital: Bandar Seri Begawan
Brunei
Capital: Bandar Seri Begawan
Member state
Brunei
Capital: Bandar Seri Begawan
Joined
1984
Population
1,393,162
Muslim percentage
84 %
Area (km2)
5,765
Official Languages
Malay
Nigeria
Capital: Abuja
Nigeria
Capital: Abuja
Member state
Nigeria
Capital: Abuja
Joined
1986
Population
206,630,269
Muslim percentage
53 %
Area (km2)
923,768
Official Languages
English
Azerbaijan
Capital: Baku
Azerbaijan
Capital: Baku
Member state
Azerbaijan
Capital: Baku
Joined
1991
Population
9,477,100
Muslim percentage
91 %
Area (km2)
86,600
Official Languages
Azerbaijani
Albania
Capital: Tirana
Albania
Capital: Tirana
Member state
Albania
Capital: Tirana
Joined
1992
Population
2,821,977
Muslim percentage
52%
Area (km2)
28,748
Official Languages
Albanian
Kyrgyzstan
Capital: Bishkek
Kyrgyzstan
Capital: Bishkek
Member state
Kyrgyzstan
Capital: Bishkek
Joined
1992
Population
5,976,570
Muslim percentage
91 %
Area (km2)
199,951
Official Languages
Kyrgyz
Russian
Tajikistan
Capital: Dushanbe
Tajikistan
Capital: Dushanbe
Member state
Tajikistan
Capital: Dushanbe
Joined
1992
Population
8,860,000
Muslim percentage
98 %
Area (km2)
143,100
Official Languages
Tajiki
Turkmenistan
Capital: Ashgabat
Turkmenistan
Capital: Ashgabat
Member state
Turkmenistan
Capital: Ashgabat
Joined
1992
Population
5,607,000
Muslim percentage
96 %
Area (km2)
488,100
Official Languages
Turkmen
Mozambique
Capital: Maputo
Mozambique
Capital: Maputo
Member state
Mozambique
Capital: Maputo
Joined
1994
Population
34,000,000
Muslim percentage
20%
Area (km2)
801,590
Official Languages
Portuguese
Kazakhstan
Capital: Astana
Kazakhstan
Capital: Astana
Member state
Kazakhstan
Capital: Astana
Joined
1995
Population
17,244,000
Muslim percentage
74%
Area (km2)
2,724,900
Official Languages
Kazakh
Russian
Uzbekistan
Capital: Tashkent
Uzbekistan
Capital: Tashkent
Member state
Uzbekistan
Capital: Tashkent
Joined
1995
Population
33,492,800
Muslim percentage
96 %
Area (km2)
447,400
Official Languages
Uzbek
Suriname
Capital: Paramaribo
Suriname
Capital: Paramaribo
Member state
Suriname
Capital: Paramaribo
Joined
1996
Population
534,189
Muslim percentage
15%
Area (km2)
163,820
Official Languages
Dutch
Togo
Capital: Lomé
Togo
Capital: Lomé
Member state
Togo
Capital: Lomé
Joined
1997
Population
6,993,000
Muslim percentage
19 %
Area (km2)
56,785
Official Languages
French
Guyana
Capital: Georgetown
Guyana
Capital: Georgetown
Member state
Guyana
Capital: Georgetown
Joined
1998
Population
784,894
Muslim percentage
8 %
Area (km2)
214,969
Official Languages
English
Ivory Coast
Capital: Yamoussoukro
Ivory Coast
Capital: Yamoussoukro
Member state
Ivory Coast
Capital: Yamoussoukro
Joined
2001
Population
23,202,000
Muslim percentage
42
Area (km2)
322,463
Official Languages
French
| Member state | Joined | Population | Muslim percentage | Area (km2) | Official Languages | Notes |
| Afghanistan Capital: Kabul | 1969 | 41,144,133 | 98 % | 652,230 | Dari Pashto | Suspended 1980 – March 1989 during the Soviet–Afghan War. |
| Algeria Capital: Algiers | 1969 | 45,847,599 | 98 % | 2,381,741 | Arabic Tamazight | |
| Chad Capital: N'Djamena | 1969 | 19,319,000 | 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 | 91 % | 245,857 | French | |
| Indonesia Capital: Jakarta | 1969 | 280,813,676 | 87 % | 1,904,569 | Indonesian | |
| Iran Capital: Tehran | 1969 | 86,708,850 | 98 % | 1,648,195 | Persian | Originally joined as Pahlavi Iran. |
| Jordan Capital: Amman | 1969 | 10,458,701 | 97 % | 89,342 | Arabic | |
| Kuwait Capital: Kuwait City | 1969 | 4,429,966 | 75 % | 17,818 | Arabic | |
| Lebanon Capital: Beirut | 1969 | 6,748,419 | 55 % | 10,452 | Arabic | |
| Libya Capital: Tripoli | 1969 | 7,107,348 | 98 % | 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 | 98 % | 1,030,700 | Arabic | |
| Morocco Capital: Marrakesh | 1969 | 38,013,335 | 98 % | 446,550 | Arabic Tamazight | |
| Niger Capital: Niamey | 1969 | 26,342,784 | 98 % | 1,267,000 | Hausa | |
| Pakistan Capital: Islamabad | 1969 | 241,499,431 | 96 % | 881,912 | Urdu English | |
| Palestine Capital: Jerusalem | 1969 | 4,420,549 | 98 % | 6,220 | Arabic | |
| Saudi Arabia Capital: Riyadh | 1969 | 34,220,000 | 95 % | 2,149,690 | Arabic | |
| Senegal Capital: Dakar | 1969 | 18,077,537 | 96 % | 196,722 | French | |
| Somalia Capital: Merce | 1969 | 19,000,000 | 93 % | 637,657 | Arabic Somali | |
| Sudan Capital: Khartoum | 1969 | 50,000,000 | 96 % | 1,886,068 | Arabic English | |
| Tunisia Capital: Tunis | 1969 | 11,400,000 | 98 % | 163,610 | Arabic | |
| Turkey Capital: Ankara | 1969 | 86,000,000 | 98 % | 783,562 | Turkish | |
| Yemen Capital: Sana'a | 1969 | 25,235,000 | 98 | 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 | 2,174,135 | 66 % | 11,586 | Arabic | |
| Syria Capital: Damascus | 1970 | 21,987,321 | 96 % | 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 | 10,446,321 | 75% | 83,600 | Arabic | |
| Sierra Leone Capital: Freetown | 1972 | 8,400,512 | 81 % | 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 % | 11,295 | English | |
| Guinea-Bissau Capital: Bissau | 1974 | 1,746,321 | 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 | 1,385,886 | 95 % | 2,235 | Comorian French Arabic | |
| Iraq Capital: Baghdad | 1976 | 43,500,000 | 98 % | 438,317 | Arabic Kurdish | Originally joined as Ba'athist Iraq. |
| Maldives Capital: Malé | 1976 | 1,317,281 | 98 % | 300 | Dhivehi | |
| Djibouti Capital: Djibouti | 1978 | 11,886,321 | 93 % | 23,200 | Arabic French | |
| Benin Capital: Porto-Novo | 1982 | 14,111,000 | 29% | 112,622 | French | |
| Brunei Capital: Bandar Seri Begawan | 1984 | 1,393,162 | 84 % | 5,765 | Malay | |
| Nigeria Capital: Abuja | 1986 | 206,630,269 | 53 % | 923,768 | English | |
| Azerbaijan Capital: Baku | 1991 | 9,477,100 | 91 % | 86,600 | Azerbaijani | |
| Albania Capital: Tirana | 1992 | 2,821,977 | 52% | 28,748 | Albanian | |
| Kyrgyzstan Capital: Bishkek | 1992 | 5,976,570 | 91 % | 199,951 | Kyrgyz Russian | |
| Tajikistan Capital: Dushanbe | 1992 | 8,860,000 | 98 % | 143,100 | Tajiki |
· Observer states
Bosnia and Herzegovina
Capital: Sarajevo
Bosnia and Herzegovina
Capital: Sarajevo
Observer state
Bosnia and Herzegovina
Capital: Sarajevo
Joined
1994
Population
3,791,622
Muslim percentage
53%
Area (km2)
51,209
Languages
Bosnian
Serbian
Croatian
Notes
Given an invitation in 2013 by the OIC to join as a full member.
Central African Republic
Capital: Bangui
Central African Republic
Capital: Bangui
Observer state
Central African Republic
Capital: Bangui
Joined
1997
Population
4,709,000
Muslim percentage
15%
Area (km2)
622,984
Languages
French
Turkish Cypriot State
Capital: North Nicosia
Turkish Cypriot State
Capital: North Nicosia
Observer state
Turkish Cypriot State
Capital: North Nicosia
Joined
1979
Population
382,836
Muslim percentage
99%
Area (km2)
3,355
Languages
Turkish
Notes
See further details
Thailand
Capital: Bangkok
Thailand
Capital: Bangkok
Observer state
Thailand
Capital: Bangkok
Joined
1998
Population
64,456,700
Muslim percentage
7%
Area (km2)
513,120
Languages
Thai
Russia
Capital: Moscow
Russia
Capital: Moscow
Observer state
Russia
Capital: Moscow
Joined
2005
Population
146,048,500
Muslim percentage
12%
Area (km2)
17,125,242
Languages
Russian
| 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 | |
| Turkish Cypriot State 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
Zanzibar
Zanzibar
Suspended or withdrawn state
Zanzibar
Joined
1993
Notes
Withdrew August 1993
| Suspended or withdrawn state | Joined | Notes |
| Zanzibar | 1993 | Withdrew August 1993 |
· Observer organisations and communities
Moro National Liberation Front
Moro National Liberation Front
Organisation or community
Moro National Liberation Front
Joined
1977
Notes
Blocking membership of the Philippines
| Organisation or community | Joined | Notes |
| Moro National Liberation Front | 1977 | Blocking membership of the Philippines |
References
- Includes Cambodia, Ethiopia, Georgia, Montenegro, North Macedonia, Ukraine, etc.
- Also known as Guinea-Conakry.
- Although the capital of Palestine is Jerusalem, the seat of government of the country is located in Ramallah as the enti
- Also known as Burkina; formerly referred to as Upper Volta, its official name until 1984.
- Recognised only by Turkey. Under the name "Turkish Cypriot State", Northern Cyprus is an observer state of the Organisat
- Non-Muslim majorities.
- datahttp://data.worldbank.org/indicator/SP.POP.TOTL
- "Timeline: Organisation of the Islamic Conference"https://news.bbc.co.uk/2/hi/middle_east/country_profiles/1564339.stm
- The State of Palestine succeeded the seat of the Palestine Liberation Organization following the 1988 Palestinian Declar
- newhttps://new.oic-oci.org/SitePages/MemberStates.aspx
- Pew Research Center's Religion & Public Life Project: Yemen. Pew Research Center. 2010.http://www.globalreligiousfutures.org/countries/yemen/religious_demography#/?affiliations_religion_id=0&affiliations_year=2010
- "Organization of Islamic Cooperation suspends Syria's membership"http://english.alarabiya.net/articles/2012/08/13/232088.html
- "Foreign Ministry welcomes OIC decision to resume Syria's membership following Assad regime fall"https://sana.sy/en/?p=348938
- BBC News বাংলাhttps://www.bbc.com/bengali/news-62315139
- Pew Research Center's Religion & Public Life Project: Ivory Coast. Pew Research Center. 2010.http://www.globalreligiousfutures.org/countries/ivory-coast/religious_demography#/?affiliations_religion_id=0&affiliations_year=2010
- "OIC Invites Bosnia to Become Full Member"http://www.balkaninsight.com/en/article/bosnia-called-to-join-islamic-cooperation-as-full-member
- newhttps://new.oic-oci.org/SitePages/CommonPage.aspx?Item=27
- "KKTC'nin nüfusu 382 bin 836 olarak hesaplandı"https://www.aa.com.tr/tr/dunya/kktcnin-nufusu-382-bin-836-olarak-hesaplandi/2707690
- See The World Factbook|Cyprus (10 January 2006). Central Intelligence Agency. Retrieved 17 January 2006.https://web.archive.org/web/20260118111834/https://www.cia.gov/the-world-factbook/countries/cyprus/
- The Turkish Cypriot community of Cyprus became an OIC "observer community" in 1979 under the name "Turkish Muslim communhttp://www.oic-oci.org/english/conf/fm/31/31%20icfm-fc-en.htm