| Abbreviation | Definition |
|---|---|
| CERX | Carpenter Chemical (ER Carpenter) |
| CERX | Carpenter Chemical Company |
| CETU | Custom Environmental Transport |
| CETU | Custom Environmental Transport Incorporated |
| CEWX | Canadian Enterprise Gas Products |
| CF | Cape Fear Railway |
| CF | Cape Fear Railways Incorporated |
| CFC | Chemin de fer Charlevoix |
| CFCB | Chemins de Fer du Centre- Bretagne |
| CFCO | Chemin De Fer Congo Ocean |
| CFCP | Chemin De Fer Canadien Pacifique |
| CFCU | Canada Department Of National Defence |
| CFKZ | XTRA Intermodal |
| CFL | Chemin de fer Lanaudière |
| CFL | Chemin de Fer Luxembourgois |
| CFLX | Crestbrook Forest Industries |
| CFM | Chemin de fer de Matapédia et du Golfe |
| CFMG | Chemin de Fer de Matapédia et Gaspésie |
| CFMX | Cargill |
| CFMX | Cargill Incorporated |