National Futures Association 
National Fire Academy 
No Fire Area 
No Further Action 
nondeterministic finite automaton 
National Farmers Association 
National Firearms Act 
National Food Authority 
Network File Access 
no fixed abode 
Noiseless Feedback Amplifier 
name field address 
Nanocrystalline Forming Ability 
National Fertilizers Association 
National Fibromyalgia Association 
National Flight Academy 
National Food Administration 
National Founders Association 
near-fatal asthma 
near-fatal asthma attack 
nerve fiber analyzer 
Net Financial Assets 
Net Fixed Assets 
net floor area 
Net Foreign Asset 
Net Foreign Assets 
Nevada Faculty Alliance 
New Fighter Aircraft 
Newtown Fire Association 
niflumic acid