| Abbreviation | Definition |
|---|---|
| FRT | Fire Retardent Treated |
| FRTA | Fabric Roller Tube Assembly |
| FRY | Fire Related Youth |
| FS | Foot Stone |
| FSA | Fast Simulated Annealing |
| FSAC | FemSlash Advent Calendar |
| FSAT | Fan System Assessment Tool |
| FSC | Fail Safe Controller |
| FSC | Field Servicable Cassette |
| FSC | Fire Safe Cigarettes |
| FSC | Fire Safety Cigarette |
| FSD | Fire/Smoke Damper |
| FSD | Flame Safety Device |
| FSDP | Flight Simulations Development Products |
| FSE | Fast Silent Ergonomic |
| FSF | Flash Smelting Furnace |
| FSHBL | Fully Separated Horizontal Bell Lines |
| FSN | Feature Serial Number |
| FSP | Factory Specification Part |
| FSPA | Financial Security Products Association |