| Abbreviation | Definition |
|---|---|
| BR | Bombing Run |
| BR | Budget Review |
| BRA | Battle Ready Armor |
| BRA | Bearing, Range, Altitude |
| BRA | Bearing, Range, Azimuth |
| BRAAT | Base Recovery After ATtack |
| BRAC | Base Realignment and Closure (Commission) |
| BRAC | Base Realignment and Closure Commission |
| BRAC | Bomb Release Angle Computer |
| BRACE | Base Resource And Capability Estimator |
| BRASS | Breath, Relax, Aim, Sight, And Squeeze |
| BRAT | Basic Requirements Approval Testing |
| BRAT | Born, Raised And Trained |
| BRAVE | Boeing Robotic Air Vehicle |
| BRAVE | Building Resilience and Valuing Empowered [Families] |
| BRB | Ballistic Re-entry Body |
| BRB | Big Red Button |
| BRC | Bantam Reconnaissance Car |
| BRC | Base Recovery Course |
| BRC | Brigade Reconnaissance Company |