BCS
- BCS National Championship Game
- BCS theory
- Bachelor of Commercial Science
- Bachelor of Computer Science
- Baja California Sur
- Balochistan Civil Service
- Bangladesh Civil Service
- Bangladesh Computer Society
- Bangor Christian Schools
- Barclays plc
- Battery Computer System
- Beneath Ceaseless Skies
- Berlin Cosmopolitan School
- Better Call Saul
- Bicester North railway station
- Biopharmaceutics Classification System
- Bishop Cotton School (disambiguation)
- Bishop's College School
- Bloc of Communists and Socialists
- Bond Christen Socialisten
- Boston Computer Society
- Bowl Championship Series
- Breast-conserving surgery
- British Cardiovascular Society
- British Cartographic Society
- British Computer Society
- British Crime Survey
- Bryan-College Station metropolitan area
- Buddhist-Christian Studies
- Bullis Charter School
- European Air Transport (Belgium)
- Power Five conferences
- Projektron BCS
- Serbo-Croatian
- Southern Seaplane Airport