BSB may refer to:
Computing Back-side bus, data bus in a computer
Media, arts and entertainment Backstreet Boys, American boy band British Satellite Broadcasting, former UK satellite television broadcaster Beat Sneak Bandit, 2012 video game
Places Bandar Seri Begawan, the capital of Brunei Brasília, Brazil Brasília International Airport, Brazil, IATA code Samarinda International Airport, BSB, Samarinda Varanasi Junction railway station, Varanasi, India (station code)
Banking Bank Services Billing, electronic bills sent by banks Bank state branch, branch code used in Australia Banking Standards Board, promoting standards in the banking industry in the UK Beneficial State Bank, an Oakland, California-based community development bank
Legal Bar Standards Board, regulating barristers in England and Wales
Schools and universities Basel School of Business in Switzerland British School of Brussels in Brussels British School of Bahrain in Bahrain British School of Beijing in China Burgundy School of Business in France British School of Barcelona in Spain
Science and technology British Standard Brass, a screw thread standard
Organizations Bayerische Staatsbibliothek, Bavarian State Library Broad Sustainable Building, is a Chinese construction company BPO Standards Board, applying BPO standards and guidelines in real estate Barons Bus Lines, an American bus company
Military Brigade Speciale Beveiligingsopdrachten, Dutch special forces
Sports British Superbike Championship, motorcycle racing championship Broad Street Bullies, nickname of the Philadelphia Flyers teams of the 1970s İstanbul Büyükşehir Belediyespor (basketball) or İstanbul BŞB, Turkey
Politics БСБ, a Russian anti-war flag