| Abbreviation | Definition |
|---|---|
| BGSC | Biomedical Graduate Student Council |
| BGSG | Biomedical Graduate Student Government |
| BHSA | Bosnia Herzegovina Student Association |
| BHSA | Business Honors Student Association |
| BHSD | Best High School Days |
| BISA | Berkeley Indonesian Student Association |
| BISC | Bergen International Student Conference |
| BISC | Bristol International Students Centre |
| BISF | Baker Institute Student Forum |
| BISOC | Black Indigenous and Students Of Color |
| BISSA | Business Information Systems Student Association |
| BKSA | Babson Korean Student Association |
| BKSA | Babson Korean Students Association |
| BKSA | Brandeis Korean Student Association |
| BKSS | Brian Kenyon Students Space |
| BLAST | Bringing Leaders And Students Together |
| BLAST | Bruce Links All Students Together |
| BLISS | Body Love Inspiring Strong Students |
| BLSA | Barts and The London Students' Association |
| BLSA | Black Law Students Association |