| Abbreviation | Definition |
|---|---|
| CCIM | Corpus Christie Terminal |
| CCIX | Cleveland-Cliffs Iron Ore (Stauffer Chemical Consolidated Chemical Division) |
| CCIX | Rhone-Poulenc Basic Chemicals Company |
| CCIZ | Crete Intermodal |
| CCKX | California Contemporary (CCKX) |
| CCKX | CCKX Incorporated |
| CCKY | Chattooga and Chickamauga Railway |
| CCKY | Chattooga and Chickamauga Railway Company |
| CCLU | Char Ching Shipping |
| CCLU | Char Ching Shipping (USA) Limited |
| CCLX | Crystal Car Line Incorporated |
| CCLX | Crystal Car Lines |
| CCMX | Calcium Carbonate |
| CCOU | Coolgas |
| CCPO | Caro-Cris Transport, Inc. |
| CCPR | Chelatchie Prairie Railroad |
| CCPX | Canadian Chemical Producers |
| CCPX | Canadian Chemical Producers' Association |
| CCQX | Construction Carrier |
| CCR | Chicago City Railway |