Flight Safety Committee 
Flight Security Controller 
Flight Service Centre 
Flight Support Computer 
flight system control 
Florence State College 
Florida Solarenergy Center 
Florida Southern College 
fluorescent solar concentrator 
follicular small cleaved cell 
follicular small cleaved cell lymphoma 
folliculo-stellate cells 
Food Safety Consortium 
Food Security Component 
Force Structure Conference 
foreign service credits 
Forest Service Council 
Forestry Stewardship Council 
forward angle light scatter 
Forward light scatter 
forward scatter 
Forward Scattering 
Forward Schedule of Change 
forward shaped charge 
Forward Support Companies 
Foundation for the Study of Cycles 
Four Star Aviation / Four Star Cargo 
Fourier shell correlation 
fracture, simple comminuted 
Frame Sequence Check