| Abbreviation | Definition |
|---|---|
| BBL | British Bulk Liquid |
| BBL | Petroleum Barrel |
| BBOE | Billion Barrel of Oil Equivalent |
| BC | Before Christmas |
| BCE | Before Christian Era |
| BCE | Before Current Era |
| BCE | Before The Common Era |
| BCF | Billion Cubic Feet |
| BCFE | Billion Cubic Feet Equivalent |
| BCM | Billion Cubic Meters |
| BCM | Billion Cubic Metre |
| BCM | Billion Cubic Microns |
| BCMPA | Billion Cubic Meters Per Annum |
| BCU | Blue Currency Unit |
| BDMT | Bone Dry Metric Tons |
| BEV | Billion Electron Volts |
| BF | Board Foot |
| BFPD | Barrels of Fluid Per Day |
| BGY | Billion Gallons per Year |
| BHP | Brake Horse Power |