| Abbreviation | Definition |
|---|---|
| BASSMOUT | Battalion Aid Station Support of Military Operations on Urban Terrain |
| BASST | Bradley Acquisition System Support Team |
| BAST | Board on Army Science and Technology |
| BAT | Basic Airborne Training |
| BAT | Battle And Tactics |
| BAT | Brilliant Anti-Tank (munitions) |
| BATCOM | Battalion Commander |
| BAT-D | Battlefield Deception |
| BATES | Battlefield Artillery Target Engagement System (UK) |
| BATH | Brake Applicator Tool Housing |
| BAT-II | Bushmaster Armored Turret, 2 Man |
| BATS | Ballistic Aerial Target System |
| BATTLE | Battalion Analyzer and Tactical Trainer for Local Engagements War Games |
| BAUD | (transmission Rate Of A Communications Channel Or Device) |
| BAV | Beds Available |
| BAV | Berlin Airlift Veteran |
| BAV | Blinded American Veteran |
| BB | Ball Bullet |
| BB | Battle Buddy |
| BB | Big Bertha |