| Acronym | Definition |
|---|
| ISM | International Symposium on Microarchitecture |
| ISM | Institute for Supply Management |
| ISM | Industrial, Scientific and Medical (radio spectrum) |
| ISM | International Solidarity Movement |
| ISM | Incredible Sweater Machine |
| ISM | International Safety Management |
| ISM | Integrated Safety Management (US Department of Energy) |
| ISM | International Spy Museum (Washington, DC) |
| ISM | International Maritime Organization |
| ISM | Information Security Manual (Australia) |
| ISM | Interstellar Medium |
| ISM | Industrial Sewing Machine (various organizations) |
| ISM | International School of Management (New York, Paris, Tokyo) |
| ISM | Information Security Management |
| ISM | Illinois State Museum (Springfield, IL) |
| ISM | In-Kind Support and Maintenance (supplemental disability benefit) |
| ISM | Information Systems Management |
| ISM | In Samenwerking Met (Dutch) |
| ISM | Institute of Structural Mechanics (various locations) |
| ISM | Ministerium des Innern und für Sport (Ministry of the Interior and of Sports; Rheinland-Pfalz, Germany) |
| ISM | International Supply Management |
| ISM | Information Services Manager |
| ISM | Information Systems Modelling |
| ISM | Independent School Management |
| ISM | Indian School of Mines (Dhabi, India) |
| ISM | Intersite Messaging Service |
| ISM | Ibm Session Manager |
| ISM | Internetwork Status Monitor |
| ISM | Integrated Safety Management |
| ISM | Internet Service Manager |
| ISM | Image Switch Menu |
| ISM | Institute of Statistical Mathematics |
| ISM | Image Support Module |
| ISM | International Service Manager |
| ISM | Infrared Sensor Module |
| ISM | Interior Shading Method |
| ISM | I-Control Services Manager |
| ISM | Intrushield Security Manager |
| ISM | Intel Server Management |
| ISM | Incremental Search Method |
| ISM | Integrated Service Management |
| ISM | Image Source Method |
| ISM | Industrial Security Manual (US DoD 5220.22-M) |
| ISM | It Still Moves (My Morning Jacket album) |
| ISM | Indian System of Medicines |
| ISM | Incorporated Society of Musicians |
| ISM | Intimate Shared Memory |
| ISM | Institut Supérieur des Métiers (French: Higher Institute of Trades; est. 1990) |
| ISM | Internet Service Manager (Microsoft) |
| ISM | Ice Sheet Model (environmental science) |
| ISM | Interstellar Matter |
| ISM | International Symposium on Multimedia |
| ISM | Independence Seaport Museum (Philadelphia, PA) |
| ISM | International Sales Management, LLC (Indian Springs, AL) |
| ISM | Industrial Strength Marketing (Brentwood, TN) |
| ISM | Instructional Staff Member |
| ISM | Interpretive Structural Modeling |
| ISM | In-Store Marketing |
| ISM | Industrial Security Manual |
| ISM | Intelligent Storage Management |
| ISM | Independent Student Media |
| ISM | Installation Support Module |
| ISM | Ingeniería y Sistemas Mecánicos (Spanish: Engineering and Mechanical Systems) |
| ISM | Instructional Supplies and Materials (education fee; Canada) |
| ISM | Integrated Software Metrics |
| ISM | Inductor Super Magnetron |
| ISM | International School, Manila (Philippines) |
| ISM | Integrated Supplier Management (Capability Maturity Model Integration) |
| ISM | Information Technology Security Magazine |
| ISM | Induction/Synchronous Motor |
| ISM | Integrated Security Management |
| ISM | Integrated System Management |
| ISM | Imperiled Species Management (Florida Fish and Wildlife Conservation Commission) |
| ISM | International Spaceflight Museum (virtual museum) |
| ISM | Information Security Markings (national intelligence) |
| ISM | Integrated Services Module |
| ISM | Information Systems Management Corporation |
| ISM | International Student Ministries |
| ISM | Institut des Sciences des Microstructures (French; Canada) |
| ISM | Intel Server Manager (software) |
| ISM | Integrated Software Management |
| ISM | Industry Standard Module |
| ISM | In-Transit Service Manager (aviation) |
| ISM | Institut Suisse de Météorologie (Swiss Weather Institute) |
| ISM | International School of Minnesota |
| ISM | Induction Squirrel Motor |
| ISM | Integrated Sustainment Maintenance (Army) |
| ISM | I, Self, Me (recovery) |
| ISM | Incredibly Short Memory |
| ISM | IntruShield Security Manager (software) |
| ISM | Information System Manager |
| ISM | Interactive Storage Media |
| ISM | Inverted Slot-Mode (microwave theory) |
| ISM | Institut Sainte-Marie |
| ISM | International Systems Marketing, Inc. |
| ISM | I Sabotage Myself |
| ISM | Information Sources Map |
| ISM | Insensitive Munitions |
| ISM | ISDN Standards Management |
| ISM | Institute Sergeant Major (Singapore Armed Forces) |
| ISM | IBM (International Business Machines) Session Manager (IBM Corp.) |
| ISM | Intensive Support and Monitoring Service (UK) |
| ISM | Internet Search Metrics (various locations) |
| ISM | Identity and Security Management (software) |
| ISM | Institute of Science and Management (Tawau, Sabah, Malaysia) |
| ISM | In Service Measurement |
| ISM | Implicit Space Mapping |
| ISM | Institute of Supervisory Management |
| ISM | International Surfing Museum (Huntington Beach, CA) |
| ISM | Integrated Sight Module |
| ISM | Input Signal Management |
| ISM | Integrated Structural Model (Bentley Systems, Inc.) |
| ISM | In-Service Manager |
| ISM | Input Source Manager |
| ISM | Interactive Services Menu (interactive TV, WAP) |
| ISM | Installation Spectrum Manager |
| ISM | In-Flight Service Manager |
| ISM | Industry-Sponsored Marketplace (B2B term for trading sites run by large corporations for supply or sell sides) |
| ISM | International Staple and Machine Company |
| ISM | Integrated Shadow Mask |
| ISM | Information Santé Multimédia (Information System Medical) |
| ISM | Information Systems Modernization |
| ISM | Intensive Site Monitoring |
| ISM | Independent Subcarrier Method |
| ISM | Investment Simulation Model |
| ISM | Image Storage Module(s) |
| ISM | Interactive Satellite Multi-Media |
| ISM | Internal Specifications Maintenance |
| ISM | Inventory Service Manager |
| ISM | Integrated Safety Manager |
| ISM | Interacting State Machine (Siemens/Infineon SLE66 microcontroller for chip cards) |
| ISM | Integrated Situation Management |
| ISM | Intelligence, Surveillance and Monitoring |
| ISM | Industrial Staff Member |
| ISM | Institute Safety Management |
| ISM | International Software Marketing, Incorporated |
| ISM | Installable Software Module |
| ISM | iSearch Media, LLC |
| ISM | Improved Single Map |
| ISM | Independent Stimulation Model |
| ISM | Ironsmith Machine (Ontario, Canada) |