| Acronym | Definition |
|---|
| IST➣Information Sciences and Technology |
| IST➣Information Society Technologies (EU) |
| IST➣Indian Standard Time (GMT+0530) |
| IST➣Information Systems Technology |
| IST➣International Software (Swedish computer technology Corporation) |
| IST➣Instituto Superior Técnico (Portugal: Institute for Higher Technology) |
| IST➣Information Scientifique et Technique (French: Scientific and Technical Information) |
| IST➣Institutional Strengthening and Training (World Bank) |
| IST➣Immunosuppressive Therapy |
| IST➣Information and Software Technology |
| IST➣Iliff School of Theology (Denver, CO) |
| IST➣Information Security Team (various organizations) |
| IST➣Information Security Technology (various locations) |
| IST➣Iraqi State Television |
| IST➣I'm So Tired (Beatles song) |
| IST➣In-Service Training |
| IST➣Imperial Service Troops (UK and India) |
| IST➣Individual Sewage Treatment (various locations) |
| IST➣Industrial Storage Tanks (Belgium) |
| IST➣Interventricular Septum Thickness (cardiology) |
| IST➣Implementation Support Team (various organizations) |
| IST➣Integrated Security Technologies (various locations) |
| IST➣Information Society Technologies |
| IST➣Integer Store |
| IST➣Immediate Service Termination |
| IST➣Interrupt Stack Table |
| IST➣Integrated Search Technologies |
| IST➣Interrupt Service Thread |
| IST➣Initial System Test |
| IST➣Inherently Safer Technology (various organizations) |
| IST➣Industry Standard Technology (Sarasota, FL) |
| IST➣Fraunhofer Institut für Schicht- und Oberflächentechnik (Germany) |
| IST➣Information Services & Technologies (various organizations) |
| IST➣Institut Universitaire Romand de Santé au Travail (French: Institute of Occupational Health Sciences; Switzerland) |
| IST➣Imaging Science Team (US NASA) |
| IST➣Instructional Support Team |
| IST➣International Socialist Tendency |
| IST➣Institute for Simulation and Training |
| IST➣International Service Team (scouting) |
| IST➣Instructional Systems Technology (educational program) |
| IST➣Insulin Stress Test (endocrinology) |
| IST➣Idiopathic Spasmodic Torticollis (neurological movement disorder) |
| IST➣International Study Team (various organizations) |
| IST➣Incident Support Team |
| IST➣Individual Study Time (various schools) |
| IST➣Imperial Software Technology (London) |
| IST➣Installation Support Team (US DoD) |
| IST➣Individual Status (GPIB Query) |
| IST➣International Symposium on Telecommunications |
| IST➣International Software Team |
| IST➣Infection Sexuellement Transmissibles (French: Sexually Transmitted Infection) |
| IST➣Integrated Satellite Terminal |
| IST➣International School of Tanganyika (Tanzania) |
| IST➣In Situ Treatment |
| IST➣Interconnect Stress Test |
| IST➣Innovative Steam Technologies |
| IST➣Integrated System Test |
| IST➣Integrated Supply and Trading (BP) |
| IST➣Imaging Systems and Techniques (IEEE conference) |
| IST➣Inappropriate Sinus Tachycardia |
| IST➣Institute of Spring Technology (UK) |
| IST➣Investigator Sponsored Trial (pharmaceuticals) |
| IST➣Irish Standard Time (time zone; Ireland) |
| IST➣Istanbul, Turkey - Ataturk (Airport Code) |
| IST➣International Semiconductor Technology (Taiwan) |
| IST➣Internal Spanning Tree (Cisco) |
| IST➣Ice Surface Temperature |
| IST➣Intelligent Scanning Technology |
| IST➣Ion Signature Technology (Rhode, Island) |
| IST➣Staðlaráð Íslands (Icelandic Standards) |
| IST➣International Supply Teachers |
| IST➣Integrated Solution Team |
| IST➣International Spartacist Tendency (former name of the International Communist League) |
| IST➣Inter-Switch Trunk |
| IST➣Innovative Surveillance Technology |
| IST➣Industrial Software Technology |
| IST➣ISR (Intelligence, Surveillance, and Reconnaissance) Synchronization Tool (US DoD) |
| IST➣Interactive Speech Technology |
| IST➣Instrument Support Terminal |
| IST➣Intermediate Staging Team (Canada) |
| IST➣International School of Tucson (Tucson, Arizona) |
| IST➣Israeli Standard Time |
| IST➣Infantry Squad Trainer |
| IST➣Instrument Support Toolkit |
| IST➣Innovative Science & Technology |
| IST➣Idle Shutdown Timer |
| IST➣Integrated Systems Training |
| IST➣International Switched Transit |
| IST➣Integrated Services Trunk |
| IST➣Inter-Stellar Trader (gaming) |
| IST➣Incremental System Test |
| IST➣Integrated Secure Telephone |
| IST➣Inverted Serrurier Truss |
| IST➣Interactive Service Technologies, Inc. |
| IST➣International Superhero Teams |
| IST➣Institutional Support Team |
| IST➣Initial Support Team |
| IST➣Interrupt Service Time (Linux) |
| IST➣Inter-System Test (AT&T) |
| IST➣Interim Sustainment Trainer |
| IST➣Information Switching Technology (e-payment) |
| IST➣Initial Service Test |
| IST➣International Shared Tenant (Sprint) |
| IST➣Integral System Check |
| IST➣Interstore Transfer (retail) |
| IST➣Insect Sting Reaction |
| IST➣Integrated Sciences Technology |