| Acronym | Definition |
|---|
| ICS | Internet Connection Sharing (Microsoft) |
| ICS | IEEE Computer Society |
| ICS | Integrated Communications System |
| ICS | Incident Command System |
| ICS | International Chemometrics Society |
| ICS | Information & Computer Science (degree) |
| ICS | Information and Computer Sciences (Information and Computer Sciences of, University of California, Irvine) |
| ICS | Institute of Computer Science (Philippines) |
| ICS | Inhaled Corticosteroids |
| ICS | Intelligent Computer Solutions |
| ICS | International Classification for Standards |
| ICS | Institute of Customer Service |
| ICS | Integrated Circuit Systems, Inc. |
| ICS | International Chamber of Shipping |
| ICS | Internet Cello Society |
| ICS | Implementation Conformance Statement(s) |
| ICS | International Continence Society (urological society) |
| ICS | Integrated Cargo System (Australia) |
| ICS | Ipswitch Collaboration Suite |
| ICS | Institute of Commonwealth Studies (UK) |
| ICS | International Christian School |
| ICS | International Commission on Stratigraphy |
| ICS | International Chili Society |
| ICS | International Community School |
| ICS | Internet Chess Server |
| ICS | Intercom System |
| ICS | InterChange Server |
| ICS | International College of Surgeons |
| ICS | Indian Civil Service (now called IAS, Indian Administrative Services) |
| ICS | Institute of Chartered Shipbrokers (UK) |
| ICS | Institute for Christian Studies (Toronto, ON, Canada) |
| ICS | Intensive Care Society (UK) |
| ICS | International Centre for Science and High Technology |
| ICS | International Computer Systems |
| ICS | Inventory Control System |
| ICS | Internet Caching System (Novell) |
| ICS | Information Control System |
| ICS | Integrated Control System |
| ICS | International Council for Science |
| ICS | International Correspondence Schools |
| ICS | Institute for Contemporary Studies |
| ICS | Information and Communications Services |
| ICS | Intercostal Space |
| ICS | Integrated Computer Systems |
| ICS | Integral Collector Storage |
| ICS | Internet Connection Services (Windows NT) |
| ICS | International Child Support |
| ICS | IBM Cabling System |
| ICS | Intercontinental Church Society (United Kingdom) |
| ICS | Internet Commerce System |
| ICS | Interacting Cognitive Subsystems |
| ICS | Interim Contractor Support |
| ICS | Immotile Cilia Syndrome |
| ICS | Industrial Computing Society |
| ICS | International Camellia Society |
| ICS | Instrument Control System |
| ICS | Image Capture System |
| ICS | Immersion Composition Society |
| ICS | Intercommunications System |
| ICS | Indy Car Series |
| ICS | International Culinary School |
| ICS | Internet Content Security |
| ICS | Integrated Collection System |
| ICS | In Country Support |
| ICS | INFORMS Computing Society Conference |
| ICS | Instrumentation and Control System |
| ICS | International College Spain |
| ICS | Intermittent Control System (environment) |
| ICS | International Congress Service |
| ICS | Import Credit Scheme (Australian government) |
| ICS | In-Circuit Simulator |
| ICS | Incoming Call Screening |
| ICS | Inventory Control Specialist |
| ICS | Information and Communication Support (for Agricultural Growth in Nigeria) |
| ICS | Italian Cultural Society |
| ICS | Interface Control Specification |
| ICS | Innovative Computer Systems |
| ICS | Intelligence Community Staff |
| ICS | International Clematis Society |
| ICS | International Cold Storage |
| ICS | Indian Chemical Society (West Bengal, India) |
| ICS | Interrupt Control Stack |
| ICS | Implementation Case Study |
| ICS | Institute of Child Studies |
| ICS | Inter-Orbit Communication System (NASA) |
| ICS | Intermountain Christian School |
| ICS | Informatics Computer School (informaticsgroup.com) |
| ICS | Interference Check Sample |
| ICS | Internet Conferencing System (Contigo) |
| ICS | Image Cytometry Standard Format (filename extension) |
| ICS | Indus Consultancy Services, Inc. |
| ICS | Indonesian CyberLibrary Society |
| ICS | Implantable Cochlear Stimulator |
| ICS | Integrated Communication Solution |
| ICS | Insurance Courier Service (Canada) |
| ICS | Internet Contact Solution |
| ICS | Intelligent Corporate Solutions |
| ICS | Institute for Chemical Studies |
| ICS | Intermediate Computer Science |
| ICS | ISS Corporate Services, Inc. |
| ICS | International Collectors Society |
| ICS | International Compliance Services |
| ICS | Internet Client Station (Aranex) |
| ICS | Infinity Computer Solutions (Wynnewood, PA) |
| ICS | Islamic Coalition Society |
| ICS | International Cloning Society |
| ICS | Infinite Computer Services |
| ICS | Introduction to Computer Sciences (course) |
| ICS | Internet Connect Services, Inc. (service provider) |
| ICS | Island Community Church (Islamorada, Florida) |
| ICS | Intermittent Control Strategy |
| ICS | International Computing Systems, Inc. |
| ICS | Improved Communications System |
| ICS | Internal Countermeasures System (Tactical Electronic Warfare Systems) |
| ICS | Interpretive Computer Simulation |
| ICS | Integrated Communication Strategy |
| ICS | Image Capture Server |
| ICS | International Congress Secretary (International Order of DeMolay) |
| ICS | Identification of Character Set (ITU-T) |
| ICS | Interagency Communications System |
| ICS | Intercommunication Control System |
| ICS | Interface Control Section |
| ICS | Internal Controls Service |
| ICS | ISDN Compatible Station |
| ICS | Intelligent Cell Site (PCS) |
| ICS | Identification Code Sorter |
| ICS | Instrumentation and Communications Subsystem |
| ICS | Integration Control Sequencer |
| ICS | Item Change Status (Alcatel) |
| ICS | Interoperability Compliance Statement |
| ICS | Image Clearing System |
| ICS | Image Communication Services |
| ICS | Interactive Claims System (insurance) |
| ICS | Interactive Compilation System |
| ICS | International Cable Systems (Sprint) |
| ICS | Infycons Creative Software (India) |
| ICS | Intermittent Clean Self-Catheterisation |
| ICS | IntelliCircuit Solutions, Inc. |
| ICS | Inter-Universitary Center for Social Science Theory and Methodology |
| ICS | Intercockpit Communication System |
| ICS | Indentation Crack Size |
| ICS | Intercommunication Control Set |
| ICS | Interferometer Control Subsystem |
| ICS | Independence Coin and Stamp (Charlotte, NC) |
| ICS | International Consultation Services (DIN) |
| ICS | InfoCom Solutions Corporation (Pakistan) |
| ICS | Interactive Command Set (Datum) |
| ICS | IAIPS Communication Service |
| ICS | Impulse Clock System |
| ICS | Integrated Command/Combat System |
| ICS | Integrated Customer-Controlled System (Bellcore) |
| ICS | Interworking Call Server |
| ICS | Insurance Center Service(s) (insurance) |
| ICS | Intuitive IVI Control System |
| ICS | Internal Calibrations System |
| ICS | Interphone Control System |
| ICS | Inventory Control Series |
| ICS | Interior Communications System/Set |
| ICS | Industria Comercio y Servicios SA (La Paz, Bolivia) |