OIC (disambiguation)

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
 * Opioid intervention courts