IF
- IFAB – (i) International Football Association Board
- IFAH – (i) International Federation for Animal Health
- IFAP – (i) International Federation of Agricultural Producers
- IFC – (i) International Finance Corporation (part of the World Bank) – (a) Independent Film Channel
- IFF – (i) Identification, Friend or Foe – Individually Fresh Frozen – International Flavors and Fragrances
- IFFN – (i) Identification, Friend, Foe, or Neutral
- IFO – (i) Identified Flying Object (see also UFO)
- IFOR – (p) UN Implementation Force – (i) Institute for Operations Research – International Fellowship of Reconciliation
- IFOV – (i) Instantaneous Field of View
- IFPI – (i) International Federation of Phonographic Industries
- IFR – (i) Instrument Flight Rules
- IFRB – (i) International Frequency Registration Board
- IFV – (i) Infantry Fighting Vehicle
Read more about this topic: List Of Acronyms And Initialisms: I