| BSON | Binary JSON |
| B.Sc | Bachelor of Science |
| BSC | Base Station Controller |
| BE | Bachelor of Engineering |
| BCA | Bachelor of Computer Applications |
| B.ED | Bachelor of Education |
| BLOB | Binary Large Object |
| BHMS | Bachelor of Homeopathic Medicine and Surgery |
| BBA | Bachelor of Business Administration |
| B.com | Bachelor of Commerce |
| B.tech | Bachelor of Technology |
| BA | Bachelor of Arts |
| BRB | Be Right Back "Be Right Back" is an expression, for the most |
| BPL | Below Poverty Line |
| BPL | British Physical Laboratories Group |
| BAMS | Bachelor of Ayurvedic Medicine and Surgery |
| BCG | Bacillus Calmette Guerin |
| BDS | Bachelor of Dental Surgery |
| BMD | Bone Mineral Density |
| BMI | Body Mass Index |
| BMR | Basal Metabolic Rate |
| BMT | Bone Marrow Transplant |
| BARC | Baba Atomic Research Center |
| BBC | British Broadcasting Corporation |
| BCCI | Board of Control for Cricket in India |
| BIFR | Board of Industrial and Financial Reconstruction |
| BIS | Bureau of Indian Standards |
| BMW | Bayerische Motoren Werke |
| BPO | Business Process Outsourcing |
| BASIC coding | Beginner's All-Purpose Symbolic Instruction Code |
| BIOS | Basic Input Output System |
| BAE | Baby or Before Anyone Else |
| BFF | Best Friends Forever |
| BSP | Bahujan Samaj Party |
| BC | Be Cool / Because |
| BUN | Blood Urea Nitrogen |
| BWC | Biological Weapons Convention |
| B2K / BTK | Back to Keyboard |
| BTT | Back to Topic |
| BTW | By the Way |
| B/C | Because |
| BTET | Bihar Teacher Eligibility Test |
| BP | Blood Pressure |
| BPD | |
| BNT Time Zone | Brunei Darussalam Time (Standard Time) |
| BOT Time Zone | Bolivia Time (Standard Time) |
| BRST Time Zone | Brasília Summer Time (Daylight Saving Time) |
| BRT Time Zone | Brasília Time / Brazil Time (Standard Time) |
| BST Time Zone | Bangladesh Standard Time (Standard Time) |
| BTT Time Zone | Bhutan Time (Standard Time) |
| BRICS | Brazil, Russia, India, China and South Africa |
