| Acronym | Meaning |
| BP | C&TSSCommunication And Tracking Subsystem |
| BP | C&WCaution And Warning |
| BP | C/0Changeout |
| BP | C/CCombustion Chamber |
| BP | C/DCountdown |
| BP | C/FCenter Frequency |
| BP | C/LChecklist |
| BP | C/PCold Plate |
| BP | C/RCommutation Rate |
| BP | C/SCounts Per Second |
| BP | C/SCSCCost/Schedule Control Systems Criteria |
| BP | C/WCarrier Wave |
| BP | CA California |
| BP | Capacitance |
| BP | Caution And Warning |
| BP | C-Band3900 To 6200 MHz |
| BP | C-BDC-Band |
| BP | C-CCarbon-Carbon |
| BP | Celsius |
| BP | Centigrade |
| BP | Checkout |
| BP | Closed Loop |
| BP | Coeff Icient |
| BP | Complete |
| BP | Constant |
| BP | Contamination/Overpressure |
| BP | C-to-CComputer-to-Computer |
| BP | Cutoff |
| BP | Cycle |
| BP | One Hundred |
| BPD | Baseline Program Documentation |
| BPI | Bits Per Inch |
| BPM | Beats Per Minute |
| BPMS | Blood Pressure Measuring System |
| BPR | Bypass Ratio |
| BPS | Bits Per Second |
| BPT | Body Point |
| BPV | Bipropellant Valve |
| BR | Bit Rate |
| BRAVO | Business Risk And Value Of Operation In Space |
| BRCS | Basic Reference Coordinate System |
| BRG | Bearing |
| BRK | Brake |
| BRKT | Bracket |
| BRM | Biological Research Module |
| BRPM | Breath Rate Per Minute |
| BRRS | Banana River Repeater Station |
| BRS | Bottom Right Side |
| BRT | Bright |
| BS | Block Specification |