 Folliculo-Stellate Cells | Medical |
| Food Safety Consortium | Medical |
| Food Security Component | Common |
| Force Structure Conference | Military |
| Foreign Service Credits | Military |
| Forest Service Council | Organizations |
| Forestry Stewardship Council | Government |
| Forum for Security Cooperation | Military |
| Forward Angle Light Scatter | Medical |
| Forward Light Scatter | Medical |
| Forward Scatter | Medical |
| Forward Scattering | Military |
| Forward Shaped Charge | Science |
| Foundation for the Study of Cycles | Common |
| Fourier Shell Correlation | Medical |
| Fracture, Simple Comminuted | Medical |
| Frame Sequence Check | Technology |
| Framingham State College | Education |
| Fresno State College | Common |
| Friendly Situation Capability | Military |