| Carrier Code | Carrier Name |
| CKAU | COOL CARRIERS (SVENSKA) AB |
| CKBG | CONDOCK BEFRACHTUNGS-GESELLSCHAFT MBH |
| CKGU | CONTRIN UEBERSEE TRANSPORTGERAETE HANDELSGES MBH |
| CKIB | COOK INLET TUG & BARGE CO INC |
| CKLN | CHEMIKALIEN SEETRANSPORT GMBH |
| CKTU | CKT PARTS & TOOLS B V |
| CLAU | CONTI LINES |
| CLBU | CONTAINER LEASING A G |
| CLCC | CLUTCH CARGO INTERNATIONAL INC |
| CLCU | CONSTELLATION LINES U S A |
| CLDU | COSTA LINE CARGO SERVICES INC |
| CLDW | COLDMAR LINES |
| CLGU | CONTSHIP UK LTD |
| CLIR | CALIFORNIA RICE TRANSPORT INC |
| CLIU | CONTAINER LLOYD (USA) INC |
