BCA
- BC Aichach
- BC Augsburg
- BCA-TV
- Bachelor of Computer Application
- Badminton Confederation of Africa
- Bangladesh Caterers Association UK
- Bank Central Asia
- Barbados Cricket Association
- Belfast City Airport
- Bergen County Academies
- Bicinchoninic acid
- Bicinchoninic acid assay
- Bihar Cricket Association
- Billiard Congress of America
- Binary collision approximation
- Boeing Commercial Airplanes
- Book Club Associates
- Boston Center for the Arts
- Botswana College of Agriculture
- Branched-chain amino acid
- Breast cancer awareness
- Brethren Colleges Abroad
- British Car Auctions
- British Cartoonists' Association
- British Caving Association
- British Central Africa
- British Cheerleading Association
- British Chess Federation
- British Chiropractic Association
- British Citizen Awards
- Broadcasting Company of America
- Broadcasting Corporation of Abia State
- Buddhist Churches of America
- Building and Construction Authority
- Burst cutting area
- Business Council of Australia
- Civilian Board of Contract Appeals
- Minnesota Bureau of Criminal Apprehension
- Model Business Corporation Act