| Acronym | Definition |
|---|
| FFI | Festival Film Indonesia |
| FFI | Foreign Function Interface |
| FFI | Foreign Financial Institution |
| FFI | Family Firm Institute, Inc. |
| FFI | For Further Information |
| FFI | Football Frontier International |
| FFI | Fuel Freedom International |
| FFI | Fight for Independence (gaming) |
| FFI | Fatal Familial Insomnia |
| FFI | Fauna and Flora International |
| FFI | Fee for Intervention (Health and Safety Executive; UK) |
| FFI | Film Federation of India (India) |
| FFI | Fer Forgé Industrie (French: Wrought Iron Industry) |
| FFI | Forces Françaises de l'Intérieur (WWII, French Resistance Army) |
| FFI | Faith Freedom International |
| FFI | Friendship Force International (Florida) |
| FFI | French Forces of the Interior (WWII) |
| FFI | Film Finances, Inc. (various locations) |
| FFI | Fixed and Flashing |
| FFI | Forest Frontiers Initiative |
| FFI | Les Faisant Fonction d'Interne (French healthcare professional) |
| FFI | Fotografie Forum International (German photography forum) |
| FFI | France Finance Investissement (French investment company) |
| FFI | Fish Farming International (journal) |
| FFI | Free from Infection |
| FFI | Forum Francophone International (French: International Francophone Forum) |
| FFI | Fonds Francophone des Inforoutes (French: Francophone Information Highway Fund; est. 1998) |
| FFI | Fire Facilities, Inc. (Sun Prairie, WI) |
| FFI | Forsvarets Forsknings Institutt |
| FFI | Fresh Food Images (photography) |
| FFI | Financial Fraud Institute |
| FFI | Full Field Investigation |
| FFI | Failure to Follow Instructions |
| FFI | Full Frame Image |
| FFI | Formal Financial Institution |
| FFI | Fraternité Francophone Internationale (French: Francophone International Fraternity) |
| FFI | Flexible Film Isolator |
| FFI | Fraction of Faults Isolated |
| FFI | Futures Foundation International |
| FFI | Fulco Fulfillment, Inc. (Dover, NJ; est. 2001) |
| FFI | Fiber Fuels Institute |
| FFI | Freight Forwarder Instructions (FIATA form) |
| FFI | Flame Failure Indicator |
| FFI | Fraction of Failures Isolated |