IOC most commonly refers to the International Olympic Committee.
IOC or IoC may also refer to:
Computing IBM Open Class, IBM C++ product Indicator of compromise, an artifact likely indicating a computer intrusion Inversion of control, a software design pattern
Organizations Imperial Orange Council, international council of the Orange Order Indian Ocean Commission Indian Oil Corporation, large Indian oil and gas company Indian Orthodox Church, Kerala, India International Olive Council Initiative on Cities, urban research institute at Boston University Initiatives of Change, international organisation "building trust across the world's divides" (formerly Moral Re-Armament) Intergovernmental Oceanographic Commission of Unesco International Ornithological Committee, former name of the International Ornithologists' Union International Order of Characters, an organization dedicated to improving the fields of aviation and aerospace Iron Ore Company of Canada
Other uses Icon of Coil, Norwegian electronic music band Immediate or cancel, a type of order used on some stock exchanges Index of coincidence, the technique in cryptography of counting the number of times that identical letters appear Initial operating capability, minimum level of deployment, especially in the US military Intraoral camera, a device used to take photos of the inside of a patient's mouth Italian organized crime