| Acronym | Definition |
|---|
| ISG➣Iraq Study Group |
| ISG➣Iraq Survey Group |
| ISG➣International Steel Group |
| ISG➣Idle Stop and Go (Kia Motors Corporation) |
| ISG➣Information Storage Group |
| ISG➣Information Services Group |
| ISG➣Internet Services Group |
| ISG➣Integrated Starter Generator |
| ISG➣Intelligent Services Gateway |
| ISG➣Integrated Services Group (various locations) |
| ISG➣Integrated Starter/Generator |
| ISG➣Instructional Support Group (various locations) |
| ISG➣Infinite Sword Glitch (gaming) |
| ISG➣Integrated Security Gateway |
| ISG➣Information Systems Group |
| ISG➣Information Systems Group (IBM) |
| ISG➣Integrated Solutions Group (formerly Computerland) |
| ISG➣Immune Serum Globulin |
| ISG➣Incident Support Group (US FEMA) |
| ISG➣Intermarket Surveillance Group |
| ISG➣Intelligent Services Gateway (Cisco) |
| ISG➣Infrastructure Steering Group |
| ISG➣Investment Services Group |
| ISG➣International Security Group, Inc. (Washington, DC) |
| ISG➣Indicators' Sub-Group (Social Protection Committee; European Commission) |
| ISG➣Industry Steering Group |
| ISG➣Individual and Small Group (medical insurance) |
| ISG➣Ichthyosis Support Group |
| ISG➣Interoperability Steering Group (US DoD) |
| ISG➣Internet Safety Group (New Zealand) |
| ISG➣Integrated Services Gateway (Sprint) |
| ISG➣International Series Gold (Association of Tennis Professionals; tournaments) |
| ISG➣Infiniti Systems Group (various companies) |
| ISG➣Iraq Stabilization Group (US State Department) |
| ISG➣Instrument Support Group |
| ISG➣Infrastructure Support Group |
| ISG➣Internet Support Group (Deutsche Bank) |
| ISG➣Information Storage Group (HP) |
| ISG➣Intelligence Support Group |
| ISG➣Incoming Service Grouping |
| ISG➣Ilio-Sakral-Gelenk (German: Ilio-sacral-joint) |
| ISG➣Information and Support Group |
| ISG➣Instant Software Generation |
| ISG➣Individual Security Guard |
| ISG➣Intersite Gateway |
| ISG➣Internal Stable Globalization (psychology) |
| ISG➣Information Security Guideline |
| ISG➣Immortal Soldiers Gaming Network (gaming) |
| ISG➣Intuitive Solutions Group (Ontario, Canada) |
| ISG➣Immediate Staffing Group, Inc. (strike staffing firm) |