| Abbreviation | Definition |
|---|---|
| NCJU | North American Container System |
| NCLU | China Ocean Shipping |
| NCLU | China Ocean Shipping Company |
| NCLX | Nova Chemicals |
| NCLX | Nova Chemicals Incorporated |
| NCOK | North Central Oklahoma Railway |
| NCPR | North Carolina Ports Railway Commission |
| NCQU | Bay Cities Leasing |
| NCQU | TIP Intermodal Services |
| NCR | North Central Railroad |
| NCRA | North Coast Railroad Authority |
| NCRC | Nebraska Central Railroad |
| NCRC | Nebraska Central Railroad Company |
| NCRR | North Carolina Railroad |
| NCRT | North Carolina Rail Trails |
| NCRU | North American Container System (Transamerica Leasing) |
| NCRU | TIP Intermodal Services |
| NCRX | GE Rail Services |
| NCRX | General Electric Railcar Services Corporation |
| NCRY | Northern Central Railway |