| Abbreviation | Definition |
|---|---|
| BITS | Bulldogs Into The Streets |
| BJ | Broken Jaw |
| BJA | Board for Judicial Administration |
| BJA | Bureau of Justice Assistance |
| BJA | Bureau of Justice Assistance (US Department of Justice) |
| BJAG | Byrne Justice Assistance Grant |
| BJAR | Board for Judicial Administration Rules |
| BJH | Bringing Justice Home |
| BJI | Berkeley Judicial Institute |
| BJI | Brooklyn Justice Initiatives |
| BJL | Black Justice League |
| BJN | Bonsai Justice Network |
| BJS | Bureau of Justice Statistics |
| BJS | Bureau of Justice Stats |
| BK | Bad Kid |
| BK | Blood Killa |
| BKA | Better Known As |
| BKF | Braun Kendrick Finkbeiner, P.L.C., Attorneys at Law (Saginaw, Michigan) |
| BKQ | to Be Kept in Quarantine |
| BL | Big Lunatic |