| BAE | British Aerospace | - | Atmospheric Research Center |
| BATSE | Burst And Transient Source Experiment | - | Atmospheric Research Center |
| BBXRT | Broad-Band X-Ray Telescope | - | Atmospheric Research Center |
| BC | Bolometric Correction | - | Atmospheric Research Center |
| BD | Bonner Durchmusterung (catalog) | - | Atmospheric Research Center |
| BDB | Big Dumb Booster | - | Atmospheric Research Center |
| BECO | Booster Engine Cutoff | - | Atmospheric Research Center |
| BEM | Bug-Eyed Monster | - | Atmospheric Research Center |
| BFC | Backup Flight Computer | - | Atmospheric Research Center |
| BFCS | Backup Flight Control System | - | Atmospheric Research Center |
| BFS | Backup Flight System | - | Atmospheric Research Center |
| BH | Black Hole | - | Atmospheric Research Center |
| BIMA | Berkeley Illinois Maryland Array | - | Atmospheric Research Center |
| BIMDA | Bioserve-Instrumentation Technology Associate Materials Dispersion Analysis | - | Atmospheric Research Center |
| BMDO | Ballistic Missile Defense Office | - | Atmospheric Research Center |
| BMFT | Bundesministerium Fuer Forschung Und Technologie | - | Atmospheric Research Center |
| BNSC | British National Space Centre | - | Atmospheric Research Center |
