| Abbreviation | Definition |
|---|---|
| BLST | Brigade Logistics Support Team |
| BLT | Basic Leadership Training |
| BLT | Battalion Landing Team |
| BLTM | Battalion Level Training Model |
| BLU | Ballistic Liner Upgrade |
| BLU | Bomb Live Unit |
| BLUE | United States, and it's allies |
| BLUFOR | Blue Forces |
| BLUSAF | Blue Semi-Automated Forces (Panel Nomenclature) |
| BLW | Base Locator For Working |
| BLWE | Battle Lab Warfighting Experiment |
| BM | Ballistic Missile |
| BM | Battle Management |
| BM | BeachMaster |
| BM | Boatswain Mate |
| BM | Brigade Major |
| BM | Burevestnik Missile |
| BM | BushMaster |
| BM/C3 | Ballistic Missile/ Command, Control, and Communications |
| BM2 | Boatswain's Mate Second Class |