| Abbreviation | Definition |
|---|---|
| BDT | Block Data Transfer |
| BDY | Body |
| BDYFLP | BoDY FLaP |
| BEC | Battery Eliminating Circuitry |
| BECO | Booster Engine Cutoff |
| BEM | Body Electronics Module |
| BERT | Bug And Enhancement Request Tracking |
| BESR | Backup Executive System Recovery |
| BESS | Balloon-borne Experiment with a Superconducting Spectrometer |
| BESS | Biomedical Experiments Scientific Satellite |
| BEST | Black Employee Strategy Team |
| BEST | Booster Exhaust Study Test |
| BET | Best Estimate of Trajectory |
| BETAAngle | Sideslip Angle |
| BEWS | Blast Environment Wave Simulator |
| BF | Beat Frequency |
| BF | Body Flap |
| BFC | Backup Flight Control |
| BFC | Back-up Flight Controller |
| BFC | Body Flap Control |