| B | Breakfast 
| Others |
| B | Brett
| Others |
| B | Bridge
| Others |
| B | British
| Others |
| B | Britney
| Others |
| B | Brochure
| Others |
| B | Bronco
| Others |
| B | Brown
| Others |
| B | Browning
| Others |
| B | Bruce
| Others |
| B | Brussels
| Others |
| B | Bucharest
| Others |
| B | Buddy
| Others |
| B | Build
| Others |
| B | Bulk
| Others |
| B | Bull
| Others |
| B | Burglar
| Others |
| B | Burning
| Others |
| B | Burnt
| Others |
| B | Bus
| Others |
| B | Business
| Others |
| B | Buster
| Others |
| B | Butt
| Others |
| B | Buttcrack
| Others |
| B | Button
| Others |
| B | Buy
| Others |
| B | Bye
| Others |
| B | Byte
| Others |
| B | Bytes
| Others |
| B | form B (normally closed) contacts
| Others |
| B | Magnetic field
| Others |
| B | Modula-3 Base program
| Others |
| b | Molality
| Others |
| B | Susceptance
| Others |
| B | The Baddest
| Others |
| B & I | Banking and Insurance
| Others |
| B 737 | Boeing 737
| Others |
| B Agr Sc | Bachelor of Agricultural Science
| Others |
| B and E | Breaking and Entering
| Others |
| B TAM | Basic Telecommunications Access Method
| Others |
| B# | Bolender Number
| Others |
| B# | Browning Number
| Others |
| B&A | Before and After
| Others |
| B&A | Boat and Aircraft
| Others |
| B&A | Body and Assembly
| Others |
| B&AGO | Body and Assembly General Office
| Others |
| B&AO | Body and Assembly Operations
| Others |
| B&AP | Body and Assembly Purchasing
| Others |
| B&ASO | Body and Assembly Stamping Operations
| Others |
| B&B | Beauty And the Beast
| Others |