Look up OIC in Wiktionary, the free dictionary.

OIC or Organisation of Islamic Cooperation is an international organisation of Muslim nations.

OIC may also refer to:

• Offer in compromise, an agreement to reduce debt to the United States Internal Revenue Service
• Officer in Charge (Philippines), the specific status of a temporary head of a local government or agency in the Philippines
• Officer in charge (police), a gazetted officer in command of a police station in Sri Lanka
• Officer in Command, primarily used in the United States Uniformed Services as well as police and sheriff's departments
• Two incarnations of the Oklahoma Intercollegiate Conference: Oklahoma Intercollegiate Conference (1914–1928), Oklahoma Intercollegiate Conference (1974–1997)
• Opportunities Industrialization Center, a nonprofit adult education and job training organisation headquartered in Philadelphia, Pennsylvania, United States.
• Open Interconnect Consortium
• Opioid-induced constipation
• Order of the Imitation of Christ, a monastic order in the Syro-Malankara Catholic Church
• Orkney Islands Council, the local government authority for Orkney, Scotland, United Kingdom
• OIC, the IATA code for Lt. Warren Eaton Airport in Norwich, New York, United States
• Octahydroindole-2-carboxylic Acid (Oic)
• Office of the Independent Counsel, an office of the U.S. Department of Justice
• Outline in Color, a rock band from Tulsa, Oklahoma, United States

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