| Acronym | Definition |
|---|
| FBI➣Federal Bureau of Investigation (US government) |
| FBI➣Faith Bible Institute |
| FBI➣Faith Based Initiatives |
| FBI➣Food Borne Illness |
| FBI➣Fachbereich Informatik (German: department for computer science) |
| FBI➣Full Blooded Italian |
| FBI➣Feedback Information (3GPP) |
| FBI➣Farm Bureau Insurance |
| FBI➣Firm Believer in Christ |
| FBI➣Full Blooded Italians (pro wrestling) |
| FBI➣Fidelity, Bravery, Integrity (motto, Federal Bureau of Investigation) |
| FBI➣From Big Island (Hawaii) |
| FBI➣Full Blooded Indian |
| FBI➣Finance, Banking and Insurance |
| FBI➣Family-Based Intervention |
| FBI➣Forbrukerinspektørene |
| FBI➣Famous But Incompetent (common slang used by militia groups) |
| FBI➣First Baltic International |
| FBI➣Feedback Inhibition |
| FBI➣Frame Buffer Image |
| FBI➣Fédération Biterroise d'Improvisation (French: Federation of Beziers Improvisation) |
| FBI➣Fluidized Bed Incinerator |
| FBI➣Forbidden Planet International |
| FBI➣Forest Based Industry |
| FBI➣Fiscale Beleggingsinstelling (Dutch: Fiscal Investment Institution) |
| FBI➣Front des Banlieues Indépendant (French: Front of Independent Suburbs) |
| FBI➣Fat Boys of Illinois |
| FBI➣France Bâtiment Industrie (French building industry) |
| FBI➣Federation of British Industries |
| FBI➣Frontier Booking International (Hollywood, CA, USA) |
| FBI➣Fun Bits Interactive (Seattle, WA) |
| FBI➣Female Body Inspectors (gaming group) |
| FBI➣Flowers By Irene (Simpsons) |
| FBI➣Fee-Based Income |
| FBI➣Ferrous Basic Integral (coating thickness gages on steel, ferrous substrates) |
| FBI➣Fenerbahce Incorporated (football team in Turkey) |
| FBI➣Foreign Born Irish |
| FBI➣Force, Magnetic (B field), Current (I) |
| FBI➣Food & Beverage Institute (Culinary Institute of America) |
| FBI➣Full Blooded Irish |
| FBI➣File by Internet (taxation; UK) |
| FBI➣File Based Installer |
| FBI➣Fairytale Believers Incorporated |
| FBI➣Frisco Bay Industries (Montreal, Canada) |
| FBI➣Full Blooded Ilocano (Philippines from Big Island of Hawai'i) |
| FBI➣Firm Believer in Islam |
| FBI➣Fiji Born Indian |
| FBI➣France Britain Ireland (band in Swords, Co. Dublin, Ireland) |
| FBI➣Force by Intelligence (gaming clan) |
| FBI➣Foliar Browse Index |
| FBI➣Fungi, Bacteria, and Invertebrate |
| FBI➣Funny Business Incorporated (Danish website) |
| FBI➣Frank's Breakfast Inn (fictional, Adventures In Odyssey) |
| FBI➣Fungi, Bacteria and Insects |
| FBI➣Future Business Intercommunications Limited |
| FBI➣Funny, Beautiful, Intelligent |
| FBI➣Federal Building Industries Company LLC (Dubai, UAE) |
| FBI➣Fubu Bodywear Incorporated |
| FBI➣File Based Inserting |
| FBI➣Flyen Boyz, Inc. (automobile club; New Zealand) |
FBI - a federal law enforcement agency that is the principal investigative arm of the Department of Justice