 Filipin-Sterol Complexes | Medical |
| Filtered Shielded Cable | Military |
| Financial Supervisory Commission | Business |
| Fine Structure Constant | Common |
| Fire Support Client | Military |
| Fire Support Control | Military |
| Fisher Scientific Company | Common |
| Fisheries Science Centers | Common |
| Fitchburg State College | Education |
| Flame Spray Coating | Technology |
| Flame-Sprayed Coating | Common |
| Fleet Satellite Communications | Technology |
| Flight Safety Committee, | Common |
| Flight System Control | Military |
| Florence State College | Common |
| Florida Solarenergy Center | Education |
| Florida Southern College | Education |
| Fluorescent Solar Concentrator | Science |
| Follicular Small Cleaved Cell | Medical |
| Follicular Small Cleaved Cell Lymphoma | Medical |