| Acronym | Meaning |
| F | Fax |
| F | Fighter (US military aircraft designation; as in F-16) |
| F | At City Shop for Repairs (Alabama Public Safety Radio Code) |
| F | Cleared to Fix |
| F | Federal Reserve Bank of Atlanta, Georgia (designates original point of circulation of a dollar bill) |
| F | Flare Patterns (US DoD) |
| F | Flight Inspection |
| F | Fog (weather teports) |
| F | Force |
| F | Forward |
| F | Foxtrot |
| F | Frankfurt (German auto license plates) |
| F | Frequency of Lifting |
| F | Functional Distribution |
| F | Fuze |
| F | Undenominated United States Stamp (29 cents, introduced 3 Feb 1991) |