FFI may refer to:

• Festival Film Indonesia, in Indonesian annual Film Festival
• Final Fantasy (video game), or Final Fantasy I, 1987 video game
• Final Fight (video game), 1989 fighting action video game

• Family Firm Institute
• Fauna and Flora International, a conservation group
• Fellow of the Flag Institute
• Film Federation of India
• Finlay Forest Industries, a defunct Canadian forest products company
• Franciscan Friars of the Immaculate, a Roman Catholic institute of religious life
• Frederikshavn fI, a Danish sport club
• Free File, Inc., an American consortium of tax preparation companies
• French Forces of the Interior (French: Forces Françaises de l'Intérieur), French resistance fighters during World War II
• Fuel Freedom International, an American multi-level marketing company
• Norwegian Defence Research Establishment (Norwegian: Forsvarets forskningsinstitutt), a Norwegian military R&D institute

• Fatal insomnia, an extremely rare neurological disorder that leads to chronic insomnia and inevitable death
• Foreign function interface, in computing

• ffi, a typographical ligature
• Foia Foia language, spoken in Papua New Guinea

This disambiguation page lists articles associated with the title FFI.
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