Government

  • Offer in compromise, an agreement to reduce debt to the United States Internal Revenue Service
  • Office of the Independent Counsel, an office of the U.S. Department of Justice
  • Office of Intelligence and Counterintelligence, an office of the United States Department of Energy
  • Officer in Charge (Philippines), the specific status of a temporary head of a local government or agency in the Philippines
  • Officer in Command, primarily used in the United States Uniformed Services as well as police and sheriff's departments
  • Opioid intervention court
  • Organisation of Islamic Cooperation, an international organisation of Muslim nations
  • Orkney Islands Council, the local government authority for Orkney, Scotland, United Kingdom

Medicine

  • Opioid-induced constipation
  • Octahydroindole-2-carboxylic Acid (Oic), an intermediary in the synthesis of Perindopril

Music

  • Outline in Color, a rock band from Tulsa, Oklahoma, United States

Organisations

  • Open Interconnect Consortium
  • Opportunities Industrialization Center, a nonprofit adult education and job training organisation headquartered in Philadelphia, Pennsylvania, United States.
  • Order of the Imitation of Christ, a monastic order in the Syro-Malankara Catholic Church

Sports

  • Two incarnations of the Oklahoma Intercollegiate Conference: Oklahoma Intercollegiate Conference (1914–1928), Oklahoma Intercollegiate Conference (1974–1997)

Transportation

  • OIC, the IATA code for Lt. Warren Eaton Airport in Norwich, New York, United States

See also

  • UIC (disambiguation)