| Abbreviation | Definition |
|---|---|
| RBL | Results- Based Leadership, Inc. |
| RBLX | Roblox Corp |
| RBM | Rancho Borrego Montana |
| RBM | Records by Mail |
| RBM | Recovery Boiler Manufacturer |
| RBM | Robertson, Bailes, and McClelland, L.L.P. |
| RBM | Ruette Braye Motors |
| RBN | Real Broadcast Network |
| RBO | Jim Riley, Steve Barnard, and Bob O'Connell |
| RBO | Rack Builder Online Survey |
| RBO | Rear Bumper Overlay |
| RBO | Rollin' Boulder Outfitters |
| RBOC | Regional Bell Operating Company |
| RBP | Reliant Business Products |
| RBRCC | Rechargeable Battery Recycling Corporation of Canada |
| RBRCC | Rechargeable Battery Recycling Corporation of Canada (1994January 1st, 2013 when it was renamed Call2Recycle Canada, Inc.) |
| RBRCC | Rechargeable Battery Recycling Corporation of Canada (1994—January 1st, 2013 when it was renamed Call2Recycle Canada, Inc.) |
| RBSC | Raymond Building Supply Corporation |
| RBSL | Residential Building Services Ltd |
| RBSL | Rheinmetall BAE Systems Land |