| Acronym | Definition |
|---|
| ISA➣Industry Standard Architecture (PC slot type) |
| ISA➣Internet Security and Acceleration (Microsoft firewall and cache server) |
| ISA➣Is A (entity hierarchy in extended entity-relationship data model) |
| ISA➣Instruction Set Architecture |
| ISA➣Individual Savings Account (UK) |
| ISA➣Internal Security Act |
| ISA➣International Studies Association |
| ISA➣Independent Safeguarding Authority (UK) |
| ISA➣International Student Association |
| ISA➣Instrumentation, Systems, and Automation Society (now International Society of Automation) |
| ISA➣Isaiah |
| ISA➣International Society of Automation (est. 1945) |
| ISA➣International Sociological Association |
| ISA➣International Society of Arboriculture |
| ISA➣International Standard on Auditing |
| ISA➣Indian Student Association |
| ISA➣Intelligent Systems and Applications (workshop) |
| ISA➣India Semiconductor Association (Bangalore, India) |
| ISA➣International Students Association |
| ISA➣Instrument Society of America (now International Society for Measurement and Control) |
| ISA➣International Searching Authority |
| ISA➣Instituto Socioambiental (Portuguese: Socio-Environmental Institute; Brazil) |
| ISA➣Intelligent Speed Adaptation |
| ISA➣International Studies Abroad (various locations) |
| ISA➣Information Security Administration |
| ISA➣International Society of Appraisers |
| ISA➣International Sign Association (formerly National Electric Sign Association) |
| ISA➣Intelligence Services Act (various locations) |
| ISA➣Internal Security Assessor (Payment Card Industry Security Standards Council) |
| ISA➣Independent Subspace Analysis |
| ISA➣Interplanetary Strategic Alliance (Killzone) |
| ISA➣International Society of Andrology |
| ISA➣International Seabed Authority |
| ISA➣Inshaallah |
| ISA➣Institute for Social Anthropology (various locations) |
| ISA➣Institute for Study Abroad |
| ISA➣Israel Security Agency |
| ISA➣International Shipping Agency (various locations) |
| ISA➣Impervious Surface Area |
| ISA➣International Schools Association |
| ISA➣International Songwriters Association (UK) |
| ISA➣Iran Sanctions Act of 1996 |
| ISA➣International Symbol of Access (wheelchair standard; International Commission on Technology and Accessibility) |
| ISA➣Interconnection Security Agreement (US NIST) |
| ISA➣Insurance Services of America (Christian insurance organization) |
| ISA➣Invest in Sweden Agency |
| ISA➣Internet Security and Acceleration |
| ISA➣Internet Services Administrator |
| ISA➣Industry Standard Architecture |
| ISA➣Internet Security Association |
| ISA➣Information Security and Assurance |
| ISA➣Itanium Solutions Alliance |
| ISA➣Internet Service Api |
| ISA➣Individual Savings Account |
| ISA➣Independent Stations Algorithm |
| ISA➣Internet Server Application |
| ISA➣Incline Start Assist |
| ISA➣Integrated Starter Alternator |
| ISA➣Informix Server Administrator |
| ISA➣IBM Support Assistant |
| ISA➣Internet Security Appliance (software) |
| ISA➣Irish Sailing Association |
| ISA➣Industry Specific Application |
| ISA➣Infectious Salmon Anaemia |
| ISA➣International Standard Atmosphere |
| ISA➣International Student Advisory (various locations) |
| ISA➣International Security Affairs |
| ISA➣Independent School Association (various locations) |
| ISA➣International Society for Measurement and Control |
| ISA➣Israel Securities Authority |
| ISA➣Information Security and Assurance (international conference) |
| ISA➣Industry Sector Analysis |
| ISA➣Iowa Soybean Association |
| ISA➣International Stuttering Association |
| ISA➣Intrinsic Sympathomimetic Activity |
| ISA➣Indian Squash Academy |
| ISA➣Independent Safety Assessment |
| ISA➣Intelligence Support Activity (US Army) |
| ISA➣International Society of Arborists |
| ISA➣Itanium Solutions Alliance (microprocessors) |
| ISA➣Interactive Services Association |
| ISA➣Israel Space Agency |
| ISA➣Information Security Architecture |
| ISA➣Interstellar Alliance (Babylon5) |
| ISA➣International Stillbirth Alliance (Chicago, Illinois, USA) |
| ISA➣International Space Agency (Star Trek) |
| ISA➣Instituto Superior de Agricultura (Dominican Republic) |
| ISA➣Instrumentation Society of America (Research Triangle Park, North Carolina) |
| ISA➣Investment Savings Account |
| ISA➣Investment Savings Account ( UK tax-free investment account) |
| ISA➣Institut Supérieur d'Agriculture de Lille (French: Lille Higher Institute of Agriculture; Lille, France) |
| ISA➣Information System Architecture |
| ISA➣Integrated Services Architecture |
| ISA➣Integrated Starter-Alternator |
| ISA➣Independent Safety Auditor (various organizations) |
| ISA➣Importer Self-Assessment Program |
| ISA➣International Scientific Association |
| ISA➣Internal Systems Administrator |
| ISA➣Indian Statistical Association (est. 1960) |
| ISA➣Internet Society of Australia (est. 1992) |
| ISA➣Indian Society of Agricultural Engineers |
| ISA➣International Service Assessment |
| ISA➣Interfaith Stewardship Alliance |
| ISA➣Incest Survivors Anonymous |
| ISA➣International Spa Association |
| ISA➣International Services Advertising |
| ISA➣Internet Service Agentur GmbH (German: Internet Service Agency) |
| ISA➣International Strategic Alliance |
| ISA➣International School of the Americas (San Antonio, TX) |
| ISA➣Interservice Support Agreement |
| ISA➣International Society of Women Airline Pilots |
| ISA➣Interconexión Eléctrica SA (Colombia) |
| ISA➣Integrated Systems Analysts, Inc. |
| ISA➣Integrated System Architecture |
| ISA➣International Standards Association |
| ISA➣Incomplete Stent Apposition |
| ISA➣Interim Stowage Assembly (US NASA) |
| ISA➣International Silk Association (East Rutherford, NJ) |
| ISA➣Inertial Sensor Assembly |
| ISA➣Independent Strategic Advisors (Atlanta, GA) |
| ISA➣Internet Safety Advocate |
| ISA➣Interstage Adapter |
| ISA➣Indian Society of Anaesthesiologists |
| ISA➣Ionic Strength Adjuster |
| ISA➣International Synaesthesia Association |
| ISA➣Israel Society of Anesthesiologists |
| ISA➣Incident Staging Area (US FEMA) |
| ISA➣International Standardization Agreement |
| ISA➣In Shaa' Allah (God Willing) |
| ISA➣Islamic Shipowners' Association |
| ISA➣Integrated Systems and Aerostructures (Northrop Grumman Corp.) |
| ISA➣Indirect Speech Act (linguistics) |
| ISA➣Ionic Self-Assembly |
| ISA➣Integrated Safety Assessment |
| ISA➣Irish Stammering Association |
| ISA➣Indian Standard Equal/Unequal Angle (steel construction) |
| ISA➣Inland Sensitivity Atlas (geographical information system) |
| ISA➣Information, Support and Advocacy (various organizations) |
| ISA➣International School of Arizona |
| ISA➣Ismaili Students Association |
| ISA➣Institution of Surveyors, Australia Inc |
| ISA➣Indian Set-Aside (grant) |
| ISA➣Illinois Society of Anesthesiologists |
| ISA➣Integrated Safety Approach |
| ISA➣Iterative Sensitivity Adjustment |
| ISA➣Integrated Stereo Amplifier |
| ISA➣Individual Services Agreement |
| ISA➣Inter-Service Agreement |
| ISA➣Innovative Signal Analysis |
| ISA➣Integrated Services Access |
| ISA➣Indiana Society of Anesthesiologists |
| ISA➣Integrated Servo Actuator (hydraulic actuators with integrated control unit) |
| ISA➣Interim Storage Area |
| ISA➣Indiana Sheep Association (Greenwood, IN) |
| ISA➣Iso-Saccharinic Acid |
| ISA➣Interviewing Service of America, Inc. (Van Nuys, CA) |
| ISA➣Installation Support Agreement |
| ISA➣Idaho Sheriffs' Association |
| ISA➣Interrupt Storage Area |
| ISA➣Installation Supply Activity |
| ISA➣Information Science Associates |
| ISA➣Incident Surprise Anomaly Report |
| ISA➣In-Depth Safety Analysis |
| ISA➣Intermediate Staging Area |
| ISA➣Indicator-Based Stall Avoidance |
| ISA➣Inductee Special Assignment |
| ISA➣Intelligent Search Assistant |
| ISA➣Integrated Support Area |
| ISA➣Information Society Assessment (EU) |
| ISA➣Integrated Support Activity |
| ISA➣Information Services Analysis |
| ISA➣Information and Services Acquisition |
| ISA➣Institute for Application-Oriented Software and Systems (GMD, Germany) |
| ISA➣Installation Support Activity |
| ISA➣International Subscription Agencies Pty Ltd (now RoweCom Australia Pty Ltd) |
| ISA➣Installation Supply Account |
| ISA➣Intensive Support Allocations |
| ISA➣Ignition & Separation Assembly |
| ISA➣Imaging Sensor Autoprocessor |
| ISA➣Inprocess Sample Analysis |
| ISA➣Iterative Statistics Algorithm |
| ISA➣Imaging/Imagery Sensor Autoprocessor |
| ISA➣Ideal Survey Attributes (relate to key success factors in instrument development & quality improvement) |
| ISA➣Instructor of Small Arms |
| ISA➣IETM Support Activity |
| ISA➣Instantaneous Selection Algorithm |
| ISA➣IRS System Architecture |
| ISA➣International Shipmasters Association of the Great Lakes |
| ISA➣Information Superiority Assessment |
| ISA➣Installation and Service Activity |
| ISA➣Insurance Service Account (Northwestern Mutual; Milwaukee, WI) |
| ISA➣Identifier Splitting Algorithm |
| ISA➣International Systems Associates, Ltd. |
| ISA➣Intrasystem Analysis |