| Broad-Cast Interference | Academic & Science |
| Basic Chemical Industries | Academic & Science |
| Barcaldine | Airport Code |
| Business Cycle Index | Business |
| Bulk Chemicals Inc | Business |
| Bremen Castings Inc | Business |
| Background Criminal Investigation | Business |
| Business Cycle Indicator | Business |
| New Look Vision Group, Incorporated (formerly New Look Eyewear, Incorporated) | Business |
| BC Iron Ltd | Business |
| Boone Center Inc | Business |
| Brokerage Consultants Inc | Business |
| Business Component Integrator | Business |
| Bardstown Cable Internet | Business |
| Brentwood Communications, Inc. | Business |
| Block Communications Inc | Business |
| Bachelor Controls Inc | Business |
| Business Climate Indicator | Business |
| Bradley Caldwell Inc | Business |
| Business Credit Insurance | Business |
| Business Confidence Index | Business |
| Battery Council International | Community |
| Bull Composite Index | Community |
| Bahá'í Communications International | Community |
| Bonobo Conservation Initiative | Community |
| Bicycle Club of Irvine | Community |
| Binary Coded Information | Computing |
| Business Continuity Institute | Computing |
| Brain to Computer Interface | Computing |
| Barro Colorado Island | Country Specific |
| Baby Cheems Inu | Cryptocurrency |
| Balanced Coaxial Interference | Electronics |
| Bulk Current Injection | Electronics |
| Brain Connected Interface | General |
| Back-Up Collision Intervention | General |
| Bugatti Club Italia | General |
| Boite a Commande Impulsionelle | General |
| Barchetta Club Italia | General |
| Biturbo Club Italia | General |
| Baleno Club Indonesia | General |
| Bus and Coach International | General |
| Bus Club Indonesia | General |
| Better Cotton Initiative | General |
| Competition IV | General |
| Boa Constrictor Imperator | General |
| Brain Control Interface | General |
| Building Construction Industry | General |
| Big Crazy Ideas | General |
| Building Control Integrators | General |
| Competition II | General |
| Bekins Commercial Installations | General |
| Bureau of Criminal Investigation | Governmental |
| Belief Consensus Index | Governmental |
| Broadcasting Commission of Ireland | Governmental |
| Bureau of Criminal Identification | Governmental |
| Boston Career Institute | Governmental |
| Bar Council of India | Governmental |
| Brandeis Collegiate Institute | Governmental |
| Behavioral Coaching Institute | Governmental |
| Basic Commerce and Industries | Governmental |
| Berkshire Choral International | International |
| Banco de Crédito Industrial | International |
| Brigada Central de Información | International |
| Brain Computer Interface | Medical |
| Battlefield Combat Identification | Military and Defence |
| Battle Command Information | Military and Defence |
| Bit Count Integrity | Military and Defence |
| Basic Communication Interface | Networking |
| Barcaldine, Queensland, Australia | Regional |
| British Columbia Investment | Regional |
| Brew Compressed Image | Softwares |
| Basketball Club International | Sports |
| Basketball Congress International | Sports |
| Business Cycles Indicators | Stock Exchange |
| Baltic Exchange Capesize Index | Stock Exchange |
