| Abbreviation | Definition |
|---|---|
| BOP | Baseline Operations Plan |
| BOPACE | BOeing Plastic Analysis Capability for Engines |
| BOS | Backup Operating System |
| BOS | Bright Object Sensor |
| BOT | Beginning Of Tape |
| BOT | BOTswana (Spaceflight Tracking and Data Network site) |
| BOW | Bill Of Work |
| BP | Back Pressure |
| BP | BandPass |
| BP | Barber Pole |
| BP | BoilerPlate |
| BPD | Baseline Program Documentation |
| BPE | Beyond Planet Earth |
| BPI | Bits Per Inch |
| BPMS | Blood Pressure Measuring System |
| BPR | ByPass Ratio |
| BPT | Body PoinT |
| BPV | Bi-Propellant Valve |
| BR | Bit Rate |
| BR | Booster Ring |