| Acronym | Definition |
|---|
| FST | Field Sobriety Test |
| FST | Federal Sales Tax |
| FST | Finite State Transducer |
| FST | Forward Surgical Team |
| FST | Franciscan School of Theology (Berkeley, California) |
| FST | Family Support Team |
| FST | Fuzzy Set Theory |
| FST | Functions, Statistics, and Trigonometry (course) |
| FST | Finlands Svenska Television (Swedish: Finland Swedish Television) |
| FST | Fleet Surgical Team (US Navy) |
| FST | Field Sanitation Team (US Army) |
| FST | Fire, Smoke and Toxicity |
| FST | Fleet Synthetic Training |
| FST | Foundation for Science and Technology (UK) |
| FST | Fleet Support Team |
| FST | Family Systems Theory |
| FST | Forged Steel |
| FST | Functions, Statistics & Trigonometry (mathematics) |
| FST | Formosan Subterranean Termites |
| FST | Fast Sequenced Transport (Cisco) |
| FST | Full Scale Test |
| FST | Flat Square Technology (CRT) |
| FST | File System Translator (Apple ProDOS) |
| FST | Floating Slab Track (railway track form) |
| FST | Field Support Teams |
| FST | Flight Safety Technologies, Inc. |
| FST | Flat Screen Technology |
| FST | Finger Skin Temperature |
| FST | Final Settlement Tank (waste water treatment) |
| FST | Finance Support Team |
| FST | Field Service Team |
| FST | Fast Sine Transform |
| FST | Feature Space Trajectory |
| FST | Field Support Terminal |
| FST | Fire Safety Technology |
| FST | Forward Support Team |
| FST | Flight Simulation Test |
| FST | Flight Support Team |
| FST | Fire Support Terminal |
| FST | Fast Shock Tube |
| FST | Fiscal Support Team |
| FST | Foreign Service Tour |
| FST | Functional System Test |
| FST | Flammability, Smoke, Toxicity |
| FST | Field Start code (ITU-T) |
| FST | Fixation Index-Statistics (population genetics) |
| FST | Facility-Specific Training |
| FST | Field Selectable Threshold (Pirelli) |
| FST | Fast Sub-Space Tracking (algorithm) |
| FST | Face Scan Technology |
| FST | Formal School Training |
| FST | Frame Service Time |
| FST | Foundation for Surgical Technology (est. 1997; Littleton, CO) |
| FST | FOB, Stowed and Trimmed |
| FST | Formal Specification Technique |
| FST | Frontline Support Team |
| FST | Flight Systems Test |
| FST | Fort Smith Public Transit |
| FST | Functional Self Test (hardware or software test sequence) |
| FST | Financial Services Training College (UK) |
| FST | Financial Secretary to the Treasury (UK) |
| FST | Florida Studio Theatre (Sarasota, FL) |
| FST | Financial Services Technology |
| FST | Food Science & Technology (various organizations) |