| Abbreviation | Definition |
|---|---|
| B | Buster |
| B&A | Boat and Aircraft |
| B&P | Bid and Proposal |
| B/B | BaseBand |
| B/L | Baseline |
| B0 | BCXXI Workstation Class Computer |
| B-17 | Bomber, 17th model (Flying Fortress) |
| B-29 | Bomber, 29th model; Super Fortress |
| B2C2 | Brigade and Below Command and Control |
| B2C2 | Brigade/Battalion Command and Control |
| B-52 | Bomber, 52nd model; Boeing Stratofortress |
| BA | Base Area |
| BA | Basics Accomplished |
| BA | Battle Area |
| BA | Berlin Attack |
| BA | British Aerospace (Corporation) |
| BA | Broken Aeroplane |
| BA | Budget Analysis |
| BA | Budget Authority |
| BAA | Battlefield Automation Appraisal |