| Abbreviation | Definition |
|---|---|
| B | Basic |
| B | Behavior |
| B | Bored |
| B | Boys |
| B.O.R.C. | Burrlington Outdoor Resource Centre (York Region District School Board, Ontario, Canada) |
| BA | Below Average |
| BAAS | British Association for American Studies |
| BABE | Best and Better Ever |
| BABE | Birth And Beginnings Education |
| BABES | Beginning Awareness Basic Education Studies |
| BAC | Breath Alcohol Concentration |
| BAC | British Accreditation Council |
| BACE | Buckeye Actuarial Continuing Education |
| BACHE | Birmingham Area Consortium for Higher Education |
| BACHE | British Association of Cleaning in Higher Education |
| BACL | Bay Area Continuous Learning |
| BAD | Be A Doer |
| BADD | Bluejays Against Destructive Decisions |
| BADD | Brothers Against Drunk Driving |
| BADD | Buffaloes Against Destructive Desisions |