| Abbreviation | Definition |
|---|---|
| CV | Grand Trunk Western Railroad Incorporated |
| CVAU | Cryogenic Vessel Alternatives |
| CVC | Canadian National Railway |
| CVC | Central Vermont Railway (Canadian National Railway) |
| CVQ | Central Vermont Railway (Canadian National Railway) |
| CVQ | Grand Trunk Western Railroad Incorporated |
| CVR | Cimarron Valley Railroad |
| CVR | Cimarron Valley Railroad L.C. |
| CVRR | Cumberland Valley Rail Road |
| CVRT | Cumberland Valley Rail Trail |
| CVRX | Locomotive and Tower Preservation Fund |
| CVRY | Caddo Valley Railroad |
| CVRZ | Central Vermont Railway (Canadian National Railway) |
| CVRZ | Grand Trunk Western Railroad Incorporated |
| CVSR | Cuyahoga Valley Scenic Railroad |
| CVYR | Caddo Valley Railroad |
| CW | Colorado and Wyoming Railroad |
| CW | Colorado and Wyoming Railway Company |
| CWAU | CHS |
| CWBX | C. W. Brooks |