English abbreviations from fest to ffa
- FEST (Frankfurt English Speaking Theatre link title)
- FET (Future Engineer Tank)
- FETAC (Further Education and Training Awards Council of Ireland)
- FETE (Family Empowerment Through Education)
- FEU (Fastest Earning University)
- FEW (Francis E. Warren Air Force Base)
- FEWC (Fleet Electronic Warfare Center)
- FEWD (formation evaluation while drilling)
- FEZ (Fighter Engagement Zone)
- FF (Fuel flow)
- F.F. (Fieri Fecit ("Caused to be made"))
- FF. (Fratres ("Brothers"); Filii ("Sons"))
- FFA (Football Federation Australia)