IC or ic may stand for:

In computing and technology:

• Interactive C, a programming language for robotic controllers
• International Coordinator, the top coordinator of the FidoNet
• Integrated circuit
• Interchangeable core or interchangeable core lock cylinder
• Internal combustion engine
• intercooler

In education:

• Ithaca College, Ithaca, NY, USA
• Imperial College London, UK
• International College, Beirut, Lebanon
• IC brand school buses by Navistar International

In entertainment:

• WWE Intercontinental Championship
• International Canoe
• Infinite Challenge, the top-rating South Korean TV programme

In humanities:

• A Christogram
• Irreducible complexity
• In Character, as opposed to OOC (out of character)
• Intellectual capital

In language:

• -ic suffix
• i?, an old English pronoun
• IC codes, police shorthand expressions for apparent ethnicity
• In Casu, Latin for 'in this case'
• Index of coincidence
• Internet slang for "I See"

In medicine:

• Intensive care medicine
• Interstitial cystitis, a disease
• Informed consent, in clinical trials the form that has to be signed by the patient (subject) before entering the study

In science and mathematics:

• axiom assuming the existence of an inaccessible cardinal
• rare short version of the Roman numeral XCIX (99)
• Index Catalogue in astronomy
• Ion Chromatography

Organizations and companies:

• Industry Canada, division of the Canadian government
• Intelligence Community, a federation of United States agencies and organizations conducting intelligent activities
• Intentional Community
• InterContinental hotel chain, or its parent company InterContinental Hotels Group
• Invisible Children Inc., a non-profit for kids in Africa, or Invisible Children, the movie behind the non-profit.

Places:

• Canary Islands' ISO 3166-1 code^[1]
• Iowa City, Iowa, USA
• Ithaca College, USA

In transport:

• Ice Crystals' METAR code
• Illinois Central Railroad
• Air India (flights fomerly operated by Indian Airlines)' IATA airline designator
• InterCity certain long-distance passenger train services in Europe

Other:

• Identity card
• Incident Commander
• Military Terminology for 'In Command' or 'In Charge', often preceded by an 'O' to indicate an Officer or 'NCO' for a Non-Commissioned Officer.

References

cs:IC da:IC de:IC es:IC fr:IC ko:IC it:IC ms:IC nl:IC ja:IC pl:IC pt:IC ksh:IC (Watt ?ßß datt?) fi:Ic sv:IC