| Acronym | Definition |
|---|
| FI➣Finland (top level domain) |
| FI➣Fuel Injection/Injected |
| FI➣Forget It |
| FI➣Film Industry |
| FI➣Fourth International |
| FI➣Franklin Institute (Philadelphia, PA, USA) |
| FI➣Finnish (linguistics) |
| FI➣Farm-In (oil & gas) |
| FI➣Fixed Income |
| FI➣Fire Island (New York) |
| FI➣Financial Institution |
| FI➣Forced Induction (automotive) |
| FI➣Factory Installed |
| FI➣Family Income |
| FI➣False Information |
| FI➣Financial Independence |
| FI➣Fecal Incontinence |
| FI➣Icelandair (IATA airline code) |
| FI➣Functional Integration (Feldenkrais Method of Somatic Education) |
| FI➣Forza Italia (Italian political party founded by Silvio Berlusconi) |
| FI➣Field Intensity |
| FI➣Fiscal Intermediary |
| FI➣Food Intake |
| FI➣Foreign Intelligence |
| FI➣Flight Instructor |
| FI➣Fox Island (Washington) |
| FI➣Franciscans International |
| FI➣Feministiskt Initiativ (Swedish: Feministic Initiative; political party) |
| FI➣Financial Investigation (various locations) |
| FI➣Field Interview |
| FI➣Force Impulse |
| FI➣Fatherhood Initiative |
| FI➣Focused Improvement |
| FI➣Flow Index |
| FI➣Fatigue Index (aircraft or medicine) |
| FI➣Fake Intelligence |
| FI➣Final Inspection |
| FI➣Failure Identification |
| FI➣Fouling Index (silt density) |
| FI➣Foresight Institute |
| FI➣Firenze - Florence (Tuscany, Italy) |
| FI➣Financial Intermediary |
| FI➣Fienden (Norwegian military jargon for Enemy) |
| FI➣Fault Isolation |
| FI➣Format Identifier |
| FI➣Field Ionization |
| FI➣Fishers Island (New York) |
| FI➣Field Inspection |
| FI➣Flow Indicator (industrial control description) |
| FI➣Fast Infoset (binary encoding format for the XML Information Set) |
| FI➣Flugfélag Íslands (Iceland) |
| FI➣Financial Investor |
| FI➣Fracture Index |
| FI➣Fighter Interceptor |
| FI➣Facility Inspection |
| FI➣Formal Inspection |
| FI➣Field Instruction (contracting) |
| FI➣Front-Illuminated |
| FI➣Force Integration |
| FI➣Finance Corps (US Army) |
| FI➣Format Indicator |
| FI➣Fertility Index (animal science) |
| FI➣Franciscans of the Immaculate (religious order) |
| FI➣Farmland Industries, Inc. |
| FI➣Flow Instability |
| FI➣Failure Intensity |
| FI➣Fluorescence Index |
| FI➣Flippin' Idiot |
| FI➣Federation Intelligence (forum) |
| FI➣Flame Ionization Unit |
| FI➣Farmakope Indonesia |
| FI➣Field Interrogation Card |
| FI➣Floodplain Interaction |
| FI➣Freakinsomniacs (blog site) |
| FI➣Firing Interlock |
| FI➣Felsic Index (geology) |
| FI➣Figueira Industries (Portugal) |
| FI➣Funny Indefinites |