| Abbreviation | Definition |
|---|---|
| FSB | Fire Support Base |
| FSB | Forward Staging Base |
| FSB | Forward Support Base |
| FSB | Forward Support Battalion |
| FSB | Free Standing Base |
| FSC | Federal Supply Category |
| FSC | Federal Supply Classification |
| FSC | Field Service Company |
| FSC | Field Simulation Center |
| FSC | Fire Support Cell |
| FSC | Fire Support Coordination |
| FSC | Fire Support Coordinator (USMC) |
| FSC | Force Structure Conference |
| FSC | Future Sailor Cabinet |
| FSC3 | Fire Support Command, Control, and Communications |
| FSCATT | Fire Support Combined Arms Tactical Trainer |
| FSCC | Fire Support Coordination Cell |
| FSCC | Fire Support Coordination Center |
| FSCC | Fire Support Coordination Center (USMC) |
| FSCL | Fire Support Coordination Line |