| Abbreviation | Definition |
|---|---|
| FH | Field Hospital |
| FH | Field Howitzer |
| FH | Fleet Hospital |
| FH | Frequency Hop |
| FH | Frequency Hopping |
| FHA | Bureau For Food and Humanitarian Assistance |
| FHA | Federal Highway Administration |
| FHA | Foreign Humanitarian Assistance |
| FHC | Family Help Center |
| FHD | Foreign Hazard Duty |
| FHL | Fort Hunter Liggett |
| FHMUX | Frequency Hopping Multiplexer |
| F-HOUR | Effective time of announced Reserve Component mobilization |
| F-Hour | Effective Time of Announcement By The Secretary of Defense to The Military Departments of A Decision to Mobilize Reserve Units |
| FHP | Flying Hour Program |
| FHP | Force Health Protection |
| FHQ | Fleet HeadQuarters |
| FHT | Field Handling Trainer |
| FHT | Formal Hardware Testing |
| FHWA | Federal Highway Administration |