| Acronym | Meaning |
 | BAL | Balance |
| BAN | Budget Allocation Notice |
| BARB | Ballast Aerating Retrieval Boom |
| BARO | Barometer |
| BARS | Baseline Accounting And Reporting System |
| BASD | Ball Aerospace Systems Division |
| BASS | Backup Avionics System Software |
| BATT | Battery |
| BB | Breadboard |
| BBC | Before Business Clearance |
| BC | Battery Charger |
| BC | BinaryCounter |
| BC | Bus Coupler |
| BCCT | Break Control Command Transducers |
| BCD | Binary Coded Decimal |
| BCE | Backup Control Electronics |
| BCE | Bus Control Element |
| BCFS | Backup Flight Control System |
| BCH | Binary Coded Hexadecimal |
| BCH | Bose-Chaudhuri-Hocquenghen (Computer Code) |
| BCN | Beacon |
| BCP | Base Condemnation Percent |
| BCP | Benchmark Control Point |
| BCR | Bar Chart Report |
| BCRD | Basic Consolidated Requirements Document |
| BCRT | Binary Code Range Time |
| BCT | Bus Configuration Table |
| BCU | Bus Control Unit |
| BCWP | Budget Costs For Work Performed |
| BCWS | Budget Costs For Work Scheduled |
| BD | Band |
| BD | BinaryDecoder |
| BD | Binary Discrete |
| BD | Binary Digit |
| BD | Board |
| BDA | Backup Drive Amplifier |
| BDA | Backup Drive Amplifier |
| BDA | BermudaIsland |
| BDA | Bermuda (STDN) |
| BDA | Blast Danger Area |
| BDC | Bi-Directional Converter |
| BDC | Bit Error Rate |
| BDCF | Baseline Data Collection Facility |
| BDCR | Baseline Document Change Request |
| BDD | Baseline Definition Document |
| BDT | Block Data Transfer |
| BDY | Body |
| BDYFLP | Body Flap |
| BECO | Booster Engine Cutoff |
| BER | Bit Error Rate |
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