| Acronym | Definition |
|---|
| GST | Goods and Services Tax |
| GST | General Sales Tax (various locations) |
| GST | General Safety Training (various organizations) |
| GST | Generation-Skipping Transfer (Internal Revenue Service) |
| GST | Glutathione-S-Transferase (enzyme) |
| GST | GPS (Global Positioning System) Science & Technology Program |
| GST | Gnome System Tools (software) |
| GST | GMD (Ground-Based, Midcourse Defense) Systems Trainer |
| GST | General Service Training (Air Training Corps cadets annual camp; Canada) |
| GST | General Service Technician (various companies) |
| GST | Wind Gust |
| GST | Gracie Survival Tactics (martial arts) |
| GST | Gulf States Toyota (various locations) |
| GST | Grand Sports Tourer |
| GST | Global Storage Technologies |
| GST | Greenwich Sideral Time |
| GST | Global System Table |
| GST | Generation-Skipping Tax |
| GST | Glucagon Stimulation Test |
| GST | Gesellschaft für Sport und Technik (German: Society for Sports and Technics) |
| GST | General Systems Theory |
| GST | Gender Sensitivity Training (various organizations) |
| GST | Government Sales Tax |
| GST | Global Science and Technology |
| GST | Guam Standard Time (GMT+1000) |
| GST | Greenwich Sidereal Time |
| GST | General Services Tax (Canada) |
| GST | Ground Storage Tank (drinking water storage) |
| GST | Grace Somatomorphic Technique (fitness) |
| GST | German Sniper Team (gaming) |
| GST | Global Systems for Telematics (EU project) |
| GST | Greenwich Standard Time |
| GST | Government Support Team |
| GST | Gulf Strike Team (US Coast Guard) |
| GST | Global Sourcing Team (various companies) |
| GST | Ground System Test |
| GST | Governorate Support Team |
| GST | Gold Sodium Thiosulfate |
| GST | General Studies Thematic |
| GST | Great Sex Tax |
| GST | General Staff Target |
| GST | GPS Science & Technology program |
| GST | Ground Sensor Terminal |
| GST | Guaranteed Service Transport |
| GST | Geographical Specialist Team |
| GST | Gas Surge Tank |
| GST | Green Shirt Thursday |
| GST | Graphical Site Table |
| GST | Global Structure Transformation (data compression) |
| GST | Ground Support Terminal |
| GST | Group Summary Tool |
| GST | Green Scrubby Thing (scouring pad) |
| GST | Gerontology Society of Taiwan |