| Acronym | Definition |
|---|
| ICS | Internet Connection Sharing (Microsoft) |
| ICS | IEEE Computer Society |
| ICS | Incident Command System |
| ICS | Information and Computer Sciences (Information and Computer Sciences of, University of California, Irvine) |
| ICS | Institute of Computer Science (Philippines) |
| ICS | Information and Computer Science |
| ICS | Ice Cream Sandwich |
| ICS | Inhaled Corticosteroids |
| ICS | International Chemometrics Society |
| ICS | Interpersonal and Communication Skills (psychology) |
| ICS | International Conference on Software |
| ICS | Implementation Conformance Statement(s) |
| ICS | Industrial Communication Solutions (various locations) |
| ICS | International Community School |
| ICS | Intelligence and Security Committee (UK) |
| ICS | Import Control System (EU) |
| ICS | International Conference on Supercomputing |
| ICS | Intelligent Computer Solutions |
| ICS | Inverse Compton Scattering (astrophysics) |
| ICS | Interactive Case Study |
| ICS | Ice Cream Social (party) |
| ICS | Integration and Consulting Services (various organizations) |
| ICS | Itochu Cable Systems (Itochu Technology, Inc.; various locations) |
| ICS | Infinity Consulting Solutions (various locations) |
| ICS | Institute of Customer Service |
| ICS | International Classification for Standards |
| ICS | International Chili Society |
| ICS | International Continence Society (urological society) |
| ICS | Integrated Communications System |
| ICS | Immanuel Christian School (various locations) |
| ICS | International Cultural Studies (various schools) |
| ICS | Institute of Crop Science (various locations) |
| ICS | Inter-Community School (Zurich, Switzerland) |
| ICS | International Chamber of Shipping |
| ICS | Integrated Computer Solutions (Bedford, MA) |
| ICS | Integrated Control Solutions (various locations) |
| ICS | International Certification Services, Inc. (various organizations) |
| ICS | Institute for Christian Studies (Toronto, ON, Canada) |
| ICS | Intercom System |
| ICS | Indian Creek School (Maryland) |
| ICS | Internet Camera Server |
| ICS | International Character Set |
| ICS | Intelligent Communications Servers |
| ICS | Interface and Control System |
| ICS | Industrial Control Systems |
| ICS | Internet Component Suite |
| ICS | Incremental Change Synchronization |
| ICS | Internet Commerce Server |
| ICS | Incident Control System |
| ICS | Internet Client Station |
| ICS | Intergraph Computer Systems |
| ICS | Information and Communication Systems |
| ICS | Internet Conferencing System |
| ICS | Intel Core Solo |
| ICS | Interoperable Catalogue System |
| ICS | Intel Customer Support |
| ICS | Instrument Command Sequence |
| ICS | Internet Connection Server |
| ICS | Information and Control System |
| ICS | Internet Configuration System |
| ICS | Internet Caching System |
| ICS | Integrated Circuits |
| ICS | Internet Connection Sharing |
| ICS | Integrated Client Setup |
| ICS | Internet Content Selection |
| ICS | Donald Bren School of Information and Computer Sciences (University of California, Irvine; Irvine, CA) |
| ICS | International Commission on Stratigraphy |
| ICS | Information Collection System (software) |
| ICS | Internationales Congresscenter Stuttgart (German: International Congress Center Stuttgart; Stuggart, Germany) |
| ICS | Investor Compensation Scheme (various organizations) |
| ICS | Integrated Cargo System (Australia) |
| ICS | Ipswitch Collaboration Suite |
| ICS | Image Coordinate System |
| ICS | Industrial Control Solutions, Inc. (various locations) |
| ICS | International Counterintelligence Services (various locations) |
| ICS | Institute of Communications Studies (UK) |
| ICS | Internet Chess Server |
| ICS | Indian Cancer Society |
| ICS | International Correspondence Schools |
| ICS | Intercostal Space |
| ICS | Institute of Chartered Shipbrokers (UK) |
| ICS | Interactive Computer Service |
| ICS | International Christian School |
| ICS | Indian Civil Service (now called IAS, Indian Administrative Services) |
| ICS | Intensive Care Society (UK) |
| ICS | Irreducibly Complex System (evolution) |
| ICS | Industrial Control System (various organizations) |
| ICS | Industria Comercio y Servicios SA (La Paz, Bolivia) |
| ICS | Internet Calendaring and Scheduling (software) |
| ICS | Integrated Control System |
| ICS | International Centre for Science and High Technology |
| ICS | Inventory Control System |
| ICS | Integrated Coordinated Science (education) |
| ICS | Integrated Computer Systems |
| ICS | Integrated Circuit Systems, Inc. |
| ICS | International College of Surgeons |
| ICS | Information Control System |
| ICS | Inspection and Consumer Services (Colorado) |
| ICS | Institute of Commonwealth Studies (UK) |
| ICS | International Child Support |
| ICS | Institute for Contemporary Studies |
| ICS | Intelligent Connecting Systems (Wurth Electronics) |
| ICS | Interim Contractor Support |
| ICS | International Camellia Society |
| ICS | International Council for Science |
| ICS | Intercommunications System |
| ICS | International Computer Systems |
| ICS | Industrie, Commerce, Services (French: Industry, Commerce, Services) |
| ICS | Internet Connection Services (Windows NT) |
| ICS | Internal Customer Support |
| ICS | Information and Communications Services |
| ICS | Infrastructure Consulting Services (various locations) |
| ICS | Internet Caching System (Novell) |
| ICS | Inter-City Services (Berkeley, CA) |
| ICS | Interdisciplinary Computer Science (various schools) |
| ICS | Instructional Computing Services (various organizations) |
| ICS | Innovative Consulting Services (Signal Hill, CA) |
| ICS | Information Collection Services (Brentwood, TN) |
| ICS | Interdepartmental Committee on Security (various locations) |
| ICS | Integral Collector Storage |
| ICS | Interpreting in Community Settings (languages) |
| ICS | Immotile Cilia Syndrome |
| ICS | Interacting Cognitive Subsystems |
| ICS | IBM Cabling System |
| ICS | InterChange Server |
| ICS | Infant Crisis Services (Oklahoma) |
| ICS | Intercontinental Church Society (United Kingdom) |
| ICS | Industrial Computing Society |
| ICS | Internet Cello Society |
| ICS | Instant Communications Solution (software) |
| ICS | Instrument Control System |
| ICS | International Cold Storage |
| ICS | Interference Cancellation System (computer science) |
| ICS | Integrity Clientless Security (software) |
| ICS | Information Center Specialist (various organizations) |
| ICS | Indy Car Series |
| ICS | Internet Commerce System |
| ICS | Image Capture System |
| ICS | Innovative Computer Systems |
| ICS | Interface Computer School |
| ICS | Instrumentation and Control System |
| ICS | Immersion Composition Society |
| ICS | Informatics Computer School |
| ICS | Inventory Control Specialist |
| ICS | Integrated Collection System |
| ICS | Implementation Case Study |
| ICS | Internet Content Security |
| ICS | INFORMS Computing Society Conference |
| ICS | Intelligence Community Staff |
| ICS | In Country Support |
| 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 | ICUK Computing Services (UK) |
| ICS | International Culinary School |
| ICS | Italian Cultural Society |
| ICS | Islam and Civil Society |
| ICS | International Collectors Society |
| ICS | Information and Communication Support (for Agricultural Growth in Nigeria) |
| ICS | Interface Control Specification |
| ICS | Integrated Communication Solution |
| ICS | Indiana Cave Survey (National Speleological Society, Inc.) |
| ICS | International Clematis Society |
| ICS | Indian Chemical Society (West Bengal, India) |
| ICS | Interrupt Control Stack |
| ICS | Information and Communications System |
| ICS | Informal Competitive Solicitation (Iowa) |
| ICS | Internet Conferencing System (Contigo) |
| ICS | Institute of Child Studies |
| ICS | Inter-Orbit Communication System (NASA) |
| ICS | Internal Countermeasures System (Tactical Electronic Warfare Systems) |
| ICS | Image Cytometry Standard Format (filename extension) |
| ICS | Intermountain Christian School |
| ICS | Interference Check Sample |
| ICS | Indonesian CyberLibrary Society |
| ICS | Instant Crash Syndrome (gaming; Phantasy Star Universe) |
| ICS | Insurance Courier Service (Canada) |
| ICS | Internet Contact Solution |
| ICS | Intelligent Corporate Solutions |
| ICS | Intermediate Computer Science |
| ICS | Institute for Chemical Studies |
| ICS | ISS Corporate Services, Inc. |
| ICS | Implantable Cochlear Stimulator |
| ICS | Indus Consultancy Services, Inc. |
| ICS | Infinity Computer Solutions (Wynnewood, PA) |
| ICS | Island Community Church (Islamorada, Florida) |
| ICS | International Cloning Society |
| ICS | International Compliance Services |
| ICS | Internet Client Station (Aranex) |
| ICS | Internet Connect Services, Inc. (service provider) |
| ICS | Intermittent Control Strategy |
| ICS | International Computing Systems, Inc. |
| ICS | Interpretive Computer Simulation |
| ICS | Introduction to Computer Sciences (course) |
| ICS | Islamic Coalition Society |
| ICS | International Congress Secretary (International Order of DeMolay) |
| ICS | Internal Controls Service |
| ICS | Image Capture Server |
| ICS | Improved Communications System |
| ICS | Identification of Character Set (ITU-T) |
| ICS | Integrated Communication Strategy |
| ICS | Interagency Communications System |
| ICS | Intercommunication Control System |
| ICS | ISDN Compatible Station |
| ICS | Infinite Computer Services |
| ICS | Interface Control Section |
| ICS | Identification Code Sorter |
| ICS | Integration Control Sequencer |
| ICS | Instrumentation and Communications Subsystem |
| ICS | Interoperability Compliance Statement |
| ICS | Intelligent Cell Site (PCS) |
| ICS | Item Change Status (Alcatel) |
| ICS | Infycons Creative Software (India) |
| ICS | Interactive Compilation System |
| ICS | Intermittent Clean Self-Catheterisation |
| ICS | Indentation Crack Size |
| ICS | Independence Coin and Stamp (Charlotte, NC) |
| ICS | International Cable Systems (Sprint) |
| ICS | Inter-Universitary Center for Social Science Theory and Methodology |
| ICS | IntelliCircuit Solutions, Inc. |
| ICS | Intercockpit Communication System |
| ICS | Interferometer Control Subsystem |
| ICS | Intuitive IVI Control System |
| ICS | Integrated Command/Combat System |
| ICS | International Consultation Services (DIN) |
| ICS | Interworking Call Server |
| ICS | IAIPS Communication Service |
| ICS | Internal Calibrations System |
| ICS | InfoCom Solutions Corporation (Pakistan) |
| ICS | Intercommunication Control Set |
| ICS | Impulse Clock System |
| ICS | Interactive Command Set (Datum) |
| ICS | Interactive Claims System (insurance) |
| ICS | Integrated Customer-Controlled System (Bellcore) |
| ICS | Insurance Center Service(s) (insurance) |
| ICS | Image Communication Services |
| ICS | Interphone Control System |
| ICS | Inventory Control Series |
| ICS | Image Clearing System |
| ICS | Interior Communications System/Set |