| Acronym | Definition |
|---|
| IC | Integrated Circuit |
| IC | Intelligence Community |
| IC | I See (chat code) |
| IC | Intensive Care |
| IC | Internal Combustion (engine) |
| IC | Industry Canada (Government Department) |
| IC | Information Center |
| IC | Insurance Component |
| IC | Insurance Company (IRB) |
| IC | In Contact (recessed light fixture for direct contact with attic insulation) |
| IC | Iowa City |
| IC | Ice Cream |
| IC | In Charge of |
| IC | Include (assembly language ASM51 assembler control) |
| IC | Internal Control |
| IC | In Character |
| IC | Imperial College (UK) |
| IC | Intercontinental (WWE championship) |
| IC | Informed Consent (drug trials) |
| IC | Inventory Control (Electric Boat) |
| IC | Iceland |
| IC | Information Circular |
| IC | International Community |
| IC | Illinois Central (railroad) |
| IC | Incident Commander |
| IC | Ithaca College |
| IC | Independent Contractor |
| IC | International College (Beirut, Lebanon private high school) |
| IC | Intellectual Capital |
| IC | Information Commons |
| IC | Infection Control |
| IC | Ivory Coast |
| IC | Installation and Configuration (software) |
| IC | Ion Chromatography |
| IC | Instrumentation and Controls |
| IC | Interstitial Cystitis |
| IC | Intercom |
| IC | Illinois College (Jacksonville, IL) |
| IC | Initial Condition |
| IC | Identity Card |
| IC | Intracellular |
| IC | Inner Circle |
| IC | Interconnection |
| IC | Intercity (transportation, travel) |
| IC | Index Catalogue (astronomy) |
| IC | Input Circuit |
| IC | Instituto Cervantes (Spain) |
| IC | Intercooler |
| IC | Indiana Code (laws) |
| IC | Information Collection (various locations) |
| IC | Interface Control |
| IC | Intentional Communities |
| IC | Investment Committee (various locations) |
| IC | In-Character (gaming) |
| IC | Incremental Cost |
| IC | Index Card |
| IC | Internal Communications |
| IC | Incentive Compensation |
| IC | Institutes and Centers |
| IC | Intracranial |
| IC | Internet Commerce |
| IC | I'm Confused |
| IC | Indoor Cycling |
| IC | Immune Complex |
| IC | Incoming Call |
| IC | Inter City (Deutsche Bahn AG) |
| IC | Instructional Computing |
| IC | Ion Chamber (physics) |
| IC | Investors Chronicle (UK) |
| IC | International Communications |
| IC | Interrupt Controller |
| IC | Institutional Control (various organizations) |
| IC | Integration Council (various organizations) |
| IC | Iron Chef (television program) |
| IC | Indianapolis Colts |
| IC | Initial Contact (aviation radio communication) |
| IC | Inter-City (Italian railways) |
| IC | Internal Consumption |
| IC | Intelligence Center |
| IC | Information Committee (various organizations) |
| IC | Interactive Communication |
| IC | Ignition Coil |
| IC | Iron Curtain |
| IC | Intracardiac |
| IC | Intermittent Claudication |
| IC | Infrastructure Committee |
| IC | Interchangeable Core (locksmithing) |
| IC | Implementation Coordinator |
| IC | Ice Crystals |
| IC | Inspection Chamber |
| IC | Invested Capital |
| IC | Initial Configuration |
| IC | Institute or Center (National Library of Medicine grants & funding) |
| IC | Inflatable Curtain (Volvo) |
| IC | Impulse Control |
| IC | Interference Cancellation |
| IC | Ingénierie des Connaissances |
| IC | Inter Change |
| IC | Integrated Controller |
| IC | Iron City |
| IC | Individual Contributor (employee) |
| IC | Image Controller |
| IC | Intelligent Component |
| IC | Interactive C |
| IC | Interrupt Code |
| IC | Independent Council |
| IC | Isotopic Composition |
| IC | Information Campaign |
| IC | Interexchange Carrier |
| IC | Instrument Controller |
| IC | Iniciativa per Catalunya |
| IC | Inspiratory Capacity |
| IC | Impossible Creatures (Microsoft game) |
| IC | Installed Cost |
| IC | Intercomputer Communication (US NASA) |
| IC | Industry Commission |
| IC | Ignition Circuit |
| IC | Import Certificate |
| IC | Intelligent Communications |
| IC | Inns of Court (UK) |
| IC | Industry Committee |
| IC | Inductance-Capacitance |
| IC | Inequitable Conduct (legal) |
| IC | Internal Calibration |
| IC | Internment Camp |
| IC | Interim Change |
| IC | Inside Corner (measuring in construction) |
| IC | Intermediate Course |
| IC | Inspection Certificate |
| IC | Imum Coeli |
| IC | Interior Communications |
| IC | Innovative Creative (Industrial Centre of The Hong Kong Polytechnic University slogan) |
| IC | Interconnect Line |
| IC | Input Controller |
| IC | Individual Consideration |
| IC | Integration Consortium (global body responsible for influencing the integration industry) |
| IC | Intracloud (lightning) |
| IC | Integration Component |
| IC | Independent Certifier (various locations) |
| IC | Image Computer |
| IC | Istituto di Cristallografia (Italian: Institute of Crystallography) |
| IC | Induction Cooking |
| IC | Iloilo City |
| IC | Instructional Council (Maricopa County, AZ community college system) |
| IC | Installation Commander |
| IC | Iroquois Confederacy (five native american tribes) |
| IC | Inscribed Circle |
| IC | Ingénieurs et Cadres (French: Engineers and Managers) |
| IC | Immediate Consumption (food and beverage industries) |
| IC | Implementación Conjunta (Spanish) |
| IC | Indifferent Curve (microeconomic theory) |
| IC | Interventional Cardiologist |
| IC | Integration Contract |
| IC | Initial Capability |
| IC | Inspection Committee |
| IC | Investment Category |
| IC | Integrity Committee |
| IC | Sea Ice Concentration |
| IC | Increment Count |
| IC | Israel Center |
| IC | Instant Classics (webcomic) |
| IC | Irate Customer |
| IC | Inter-Computer |
| IC | Integration Committee |
| IC | Italian Cooperation (Rome, Italy) |
| IC | Test The Problem |
| IC | Implementation Conventions |
| IC | Incident Controller |
| IC | Integration Cycle |
| IC | Intergroup Coordination |
| IC | Interior Cell |
| IC | Itinerário Complementar |
| IC | Inner Council (Shadowbane gaming) |
| IC | Intrusion Countermeasures |
| IC | Integration Contractor |
| IC | Individual Combatant |
| IC | Informacní Centrum (Czech: Information Center) |
| IC | Installation Coordinator (US Army Europe) |
| IC | Intérêts Communaux (Belgium) |
| IC | Institute of Charity (religious order) |
| IC | Interpreting Certificate |
| IC | impaired contractility |
| IC | Imaginary Companions |
| IC | Insurgent Camp (America's Army gaming) |
| IC | Inhibiting Circuit |
| IC | Indian Airlines Corporation (IATA airline code) |
| IC | Immediate Compress |
| IC | Imperial Conflict (online strategy game) |
| IC | Invoice Currency |
| IC | Inter-Calibration |
| IC | Intercept Controller |
| IC | Integrated Contractor |
| IC | Interest Campaign |
| IC | Indicator and Control |
| IC | Interface Certification |
| IC | Interpolate then Calculate |
| IC | Isolation Condenser |
| IC | Imperial Crusader (Lineage 2 game armor set) |
| IC | Initialization Capability |
| IC | Interchangeability Code |
| IC | Integrating Center |
| IC | Inclusion Coordinator |
| IC | Irish Concern |
| IC | Imperial Creations (gaming design team for Age of Empires) |
| IC | Invited Country |
| IC | Interceptor Command |
| IC | Impairment Combination |
| IC | Intercept Committee |
| IC | (USN Rating) Interior Communications Electrician |
| IC | Impression Construction |
| IC | Integrated Carbine |
| IC | Integration/Intercept Control |
| IC | International Crime & Drugs (US Department of State) |
| IC | Invasive Cholangiography |