| Abbreviation | Definition |
|---|---|
| FSH | Furcadia Shape Handler |
| FSIJ | Free Software Initiative of Japan |
| FSIX | Functionally Structured UNIX |
| FSM | Firmware Support Manual |
| FSME | Finite State Machine Editor |
| FSMI | Free Software Movement of India |
| FSMK | Free Software Movement of Karnataka |
| FSP | foundation software platform |
| FSPB | Fraternity Sorority Programming Board |
| FSS | Functional Software Specialist |
| FSS | Futrell, Shafer, and Shafer |
| FSSE | Fire Support Software Engineering |
| FSSS | Factory Service Simulation Software |
| FSTB | Flight Software Test Bed |
| FSW | Flight Software Workshop |
| FSW | Freedom SoftWare |
| FSW | Freedom Software Www |
| FSX | Flight Simulator X |
| FT | Functional Testing |
| FTA | Fast Technology for Analysis |