| Abbreviation | Definition |
|---|---|
| CNR | Compagnie Nationale du Rhône |
| CNRC | Campus Neighborhoods Revitalization Corporation |
| CNRC | Chestnut Neighborhood Revitalization Corporation |
| CNRI | Corporation for National Research Initiatives |
| CNRL | Canadian Natural Resources Ltd |
| CNS | Cincinnati Neurology and Spine |
| CNS | Computing Network Services |
| CNSI | Client Network Services Inc |
| CNT | Canadian National Tower |
| CNTC | China National Tobacco Corporation |
| CNTL | Chenani Nashri Tunnelway Ltd |
| CO | Customer Order |
| Co. | Company |
| COAC | Cerberus Operations and Advisory Company |
| COAD | Corporation for Ohio Appalachian Development |
| COBD | Company Only Business Devices |
| COBECA | Comercial Belloso, C. A. - VENEZUELA |
| COBO | Company Owned Bottling Operations |
| COC | Centennial Outdoor Center |
| COC | Certificate Of Competency |