Identification Friend or Foe 
Identify Friend or Foe 
Interchange File Format 
Industrial Funding Fee 
International Flavors and Fragrances 
Identification Friend of Foe 
Identification, Friend or Foe 
if and only if 
Isoelectric Focusing Facility 
Image File Format 
Interference Fit Feature 
Iterative Function Fractal 
Identification Fried or Foe 
Identification Fried/Foe 
Identification Friend and Foe 
Identification Friend Foe 
Identification Friend/Foe 
Identification Friend-or-Foe 
Identification, Friend-or-Foe 
ifosfamide 
In Flanders Fields 
Indentification, Friend or Foe 
Information Flow Framework 
Information Friend or Foe 
Institute for Fermentation 
Institute of Freight Forwarders 
integrated fish farming 
Intelligent Friend & Foe 
Intensity Fluctuation Factor 
Interchange Format File