British Computer Society 
Binary Compatibility Standard 
Battery Computer System 
Batch Change Supplement 
Boston Computer Society 
Bachelor of Commercial Science 
Bar Code Sorter 
Basic Combined Subset 
Basic Control System 
Boeing Computer Services 
Bragg Crystal Spectrometer 
Banking Communication Standard 
Basic Combined Set 
Battle Control System 
Board Certified in Securities 
Buoy Communications System 
Bardeen-Cooper-Schrieffer 
Baseline Comparison System 
Battle Command Seminar 
Battle Command System 
B-channel Circuit-Switched 
Biomedical Computing Society 
biopharmaceutics classification system 
Block Check Sequence 
body condition score 
Bowl Championship Series 
British Computer Society's 
Broadcast Control Station 
Broadcast Control Suite 
Broadcast Control System