Iff

IFF, Iff or iff can stand for:

Identification friend or foe - a radio based identification system utilizing transponders
if and only if - mathematical and logical connector indicating that either both statements are true or both are false
Interchange File Format - a computer file format introduced in 1985 and later extended into many others
International Flavors and Fragrances - a company producing flavors and fragrances
International Freedom Foundation
Islamic republic of Iran football federation - Iranian national football federation
International Film Festival

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