Found 5 full forms for ONCB
| Term | Full Form | Category |
|---|---|---|
| ONCB | Observatorio Nacional Calderas de Biomasa 
| Others |
| ONCB | Observatorio Nacional de Calderas de Biomasa
| Others |
| ONCB | of the Narcotic Control Board
| Others |
| ONCB | Office of the Narcotics Control Board
| Others |
| ONCB | Orthopaedic Nursing Certification Board Orthopaedic
| Others |