| Meaning | Category |
| Bad Ass Association | Miscellaneous->Funnies |
| Bad Attitude Airport | Governmental->Transportation |
| Basketball Association of America | Community->Sports |
| Battlefield Automation Appraisal | Governmental->Military |
| Bay Area Action | Community->Non-Profit Organizations |
| Best Affine Approximation | Academic & Science->Mathematics |
| Bialla, Papua New Guinea | Regional->Airport Codes |
| Bleedin Amazin Arithmetic | Miscellaneous->Funnies |
| Bragg Amino Acids | Academic & Science->Chemistry |
| British Agrochemicals Association | Medical->Veterinary |
| British Airports Authority | Governmental->Police Governmental->Transportation |
| Broad Agency Announcement | Governmental->Military |
| Business Administration And Accountancy | Business->General |
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