The Organisation of Islamic Cooperation (OIC) (formerly Organization of the Islamic Conference) is the second largest inter-governmental organization after the United Nations which has membership of 57 states spread over four continents. The Organization is the collective voice of the Muslim world and ensuring to safeguard and protect the interests of the Muslim world in the spirit of promoting international peace and harmony among various people of the world.
- Republic of AZERBAIJAN
- Hashemite Kingdom of JORDAN
- Islamic Republic of AFGHANISTAN
- Republic of ALBANIA
- State of The UNITED ARAB EMIRATES
- Republic of INDONESIA
- Republic of UZBEKISTAN
- Republic of UGANDA
- Islamic Republic of IRAN
- Islamic Republic of PAKISTAN
- Kingdom of BAHRAIN
- BRUNEI-DARUSSALAM
- People’s Republic of BANGLADESH
- Republic of BENIN
- BURKINA-FASO (then Upper Volta)
- Republic of TAJIKISTAN
- Republic of TURKEY
- Turkmenistan
- Republic of CHAD
- Republic of TOGO
- Republic of TUNISIA
- People’s Democratic Republic of ALGERIA
- Republic of DJIBOUTI
- Kingdom of SAUDI ARABIA
- Republic of SENEGAL
- Republic of The SUDAN
- SYRIAN Arab Republic
- Republic of SURINAME
- Republic of SIERRA LEONE
- Republic of SOMALIA
- Republic of IRAQ
- Sultanate of OMAN
- Republic of GABON
- Republic of The GAMBIA
- Republic of GUYANA
- Republic of GUINEA
- Republic of GUINEA-BISSAU
- State of PALESTINE
- Union of The COMOROS
- KYRGYZ Republic
- State of QATAR
- Republic of KAZAKHSTAN
- Republic of CAMEROON
- Republic of COTE D’IVOIRE
- State of KUWAIT
- Republic of LEBANON
- Libya
- Republic of MALDIVES
- Republic of MALI
- MALAYSIA
- Arab Republic of EGYPT
- Kingdom of MOROCCO
- Islamic Republic of MAURITANIA
- Republic of MOZAMBIQUE
- Republic of NIGER
- Federal Republic of NIGERIA
- Republic of YEMEN
Observers
States
- Bosnia and Herzegovina (1994)
- Central African Republic (1996)
- Kingdom of Thailand (1998)
- The Russian Federation (2005)
- Turkish Cypriot State (1979)
Muslim Communities / Organization
Moro National Liberation Front (1977)
Islamic Institutions
Parliamentary Union of the OIC Member States – PUOICM (2000)
International Organizations
- United Nations (UN) (1976)
- Non-Aligned Movement (NAM) (1977)
- League of Arab States (LAS) (1975)
- African Union (AU) (1977)
- Economic Cooperation Organization (ECO) (1995)