FBI Federal Bureau of Investigation (US government)
FBI Forbrukerinspektørene
FBI First Baltic International
FBI Fiscale Beleggingsinstelling (Dutch: Fiscal Investment Institution)
FBI Federation of British Industries
FBI Frontier Booking International (Hollywood, CA, USA)
FBI Female Body Inspectors (gaming group)
FBI Flowers By Irene (Simpsons)
FBI Fee-Based Income
FBI Foreign Born Irish
FBI Food & Beverage Institute (Culinary Institute of America)
FBI Full Blooded Irish
FBI File by Internet (taxation; UK)
FBI File Based Installer
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 Faith Based Initiatives
FBI Firm Believer in Christ
FBI Ferrous Basic Integral (coating thickness gages on steel, ferrous substrates)
FBI Feedback Inhibition
FBI Fenerbahce Incorporated (football team in Turkey)
FBI Full Blooded Indian
FBI Full Blooded Italian
FBI Force, Magnetic (B field), Current (I)
FBI Famous But Incompetent (common slang used by militia groups)
FBI Farm Bureau Insurance
FBI Forbidden Planet International
FBI From Big Island (Hawaii)
FBI Fidelity, Bravery, Integrity (motto, Federal Bureau of Investigation)
FBI Fluidized Bed Incinerator
FBI Food Borne Illness
FBI Full Blooded Italians (pro wrestling)
FBI Feedback Information (3GPP)
FBI Fachbereich Informatik (German: department for computer science)
FBI Finance, Banking and Insurance
FBI Family-Based Intervention
FBI Fairytale Believers Incorporated