| Abbreviation | Definition |
|---|---|
| FR | Functional Requirements |
| FRA | Federal Railroad Administration |
| FRA | Federal Railroad Administration (DOT) |
| FRACAS | Failure Reporting, Analysis, and Corrective Action System |
| FRAG | Fragmentary Order |
| FRAG | Fragmentation Code |
| FRAGO | Fragmentary Order |
| FRAGORD | Fragmentary Order |
| FRAM | Fleet Rehabilitation And Modernization |
| FRANCE | Nothing, I just hate them so very much. USA Rules |
| FRB | Failure Review Board |
| FRC | Federal Resource Coordinator |
| FRC | Forward Resuscitative Care |
| FRD | Formerly Restricted Data |
| FRD | Functional Requirements Document |
| FRDF | Finnish Rapid Deployment Force |
| FREE | Fast Reaction Experimental Espionage |
| FREF | Force Record Extract File |
| FRENSIT | Friendly Situation |
| FRERP | Federal Radiological Emergency Response Plan |