| Abbreviation | Definition |
|---|---|
| FL | Front Line |
| FL | Frontliner |
| FLA | FLight Article |
| FLA | Forward Logistic Area |
| FLA | Front Line Ambulance |
| FLAGE | Flexible Lightweight Agile Guided Experiment |
| FLAGE | lexible Lightweight Agile Guided Experiment |
| FLAK | Flugzeug Abwehr Kanone |
| FLAM | Fault Location And Monitoring |
| FLAP | Failure Location Analysis Program |
| FLAR | Forward-Looking Airborne Radar |
| FLC | Federal Laboratories Consortium |
| FLC | Federal Laboratory Consortium |
| FLC | Force Level Commander |
| FLC | Force Level Control |
| FLCC | Force Level Command and Control |
| FLCF | Force Level Control Function |
| FLCS | Force Level Control System (obsolete term) |
| FLCS | orce Level Control System (obsolete term) |
| fld. | field |