| Term | Full Form | Category |
|---|---|---|
| ORCB | Oak Ridge Community Band | Others |
| ORCB | Office of Research Compliance and Biosafety | Others |
| ORCB | Ohio Respiratory Care Board | Others |
| ORCB | Olins Riviere Coates and Bagula | Others |
| ORCB | Order of Railway Conductors and Brakemen | Others |
| ORCB | Oursan Ridge Conservation Bank | Others |