| Abbreviation | Definition |
|---|---|
| B&H | Bell Howell |
| B&H | Bell & Howell |
| B&L | Bausch Lomb Incorporated |
| B&L | Bausch & Lomb Incorporated |
| B&M | Boston and Maine (railroad) |
| B&W | Bowers & Wilkins |
| B/1 | Be At One |
| B2BBTOB | Business-to- Business |
| B2C | Business To Consumer |
| B2C | Business-to-Consumer |
| BA | British Airways |
| BAAC | Bell Agusta Aerospace Company |
| BAAC | Bell/Agusta Aerospace Company |
| BAAI | Bahamian American Association Inc |
| BAAI | Bangladesh Association of America Inc |
| BAAR | Bay Area Action Racing |
| BABB | Big Apple Betta Breeders |
| BABB | Bouw Advies Buro Bos |
| BABT | Bridgestone Americas Business Technoloy |
| BAC | Baltimore Aircoil Company |