| Abbreviation | Designation | |
|---|---|---|
| RBB | Regiobahn Bitterfeld Berlin, Regiobahn Bitterfeld Berlin GmbH (German) | railway company |
| RBB | Regionalbus Braunschweig, Regionalbus Braunschweig GmbH (RBB) (German) | transport company |
| RBB | Regionalbus Braunschweig – ‘Heidebus’ (German) | transport company |
| RBB | Regionalbus Braunschweig – ‘Südniedersachsenbus’ (German) | transport company |
| 774 / RBB | Baden-Baden (German) | station code |