| 1 | CKT | Caledonian Airways Limited | IATA: KG, Callsign: Caledonian, Merged into JMC 27 March 2002. | GB | AVCODES |
| 2 | CKT | Caledonian Airways Limited | IATA: KT, Callsign: Caledonian, IATA dsignator changed to KG | GB | AVCODES |
| 3 | CKTA | CORE TRUCKING COMPANY OF TEXAS INC | | | SCAC4 |
| 4 | CKTB | C K TRUCKING CORP | | | SCAC3 |
| 5 | CKTB | C K TRANSPORTATION SERVICES INC | | | SCAC4 |
| 6 | CKTC | COOK, R TRUCKING | | | SCAC3 |
| 7 | CKTD | CLARK TRUCKING SERVICES INC | | | SCAC3 |
| 8 | CKTD | C K TRANSPORTATION LTD | | | SCAC4 |
| 9 | CKTE | CLARK TRANSPORTATION CANADA LTD | | | SCAC3 |
| 10 | CKTF | CLARK TRUCKING, INC. | | | SCAC3 |
| 11 | CKTF | CLARK TRUCKING INC | | | SCAC4 |
| 12 | CKTG | CRONK TRANSPORT INC | | | SCAC3 |
| 13 | CKTG | CLOCK TRANSPORT LLC | | | SCAC4 |
| 14 | CKTH | CHOPTANK TRANSPORT INC | | | SCAC4 |
| 15 | CKTJ | CLARKE TRANSPORTATION CANADA LIMITE | | | SCAC3 |
| 16 | CKTK | CHICKS TRUCKING INC | | | SCAC3 |
| 17 | CKTL | COOK TANK LINES | | | SCAC4 |
| 18 | CKTN | COOK TRANSPORT INC | | | SCAC3 |
| 19 | CKTN | CIRCLE K TRUCKING INC | | | SCAC4 |
| 20 | CKTO | COOK TRANSPORT | | | SCAC3 |
| 21 | CKTO | CENTRAL KENTUCKY TRANSPORT INC | | | SCAC4 |
| 22 | CKTP | CLARKE TRANSPORT ROUTIER LTEE | | | SCAC3 |
| 23 | CKTP | CLARKE TRANSPORT INC | | | SCAC4 |
| 24 | CKTQ | CHUCKS TRAILER SPOTTING SERVICE | | | SCAC3 |
| 25 | CKTQ | COOKE TRUCKING INC | | | SCAC4 |
| 26 | CKTR | COOKE TRUCKING, WILLIAM | | | SCAC3 |
| 27 | CKTT | CROCKETT, DONALD E | | | SCAC3 |
| 28 | CKTU | COOL WORLD NEDERLAND BV | | NL | BIC |
| 29 | CKTU | CKT PARTS & TOOLS B.V. | | | SCAC3 |
| 30 | CKTU | COOL WORLD WAALWIJK | | | SCAC4 |
| 31 | CKTV | COOKSON TRUCKING CO INC | | | SCAC4 |
| 32 | CKTW | C K TRUCKING (DIV OF MENASHA TRANSP | | | SCAC3 |
| 33 | CKTW | CK TRANSPORT INC | | | SCAC4 |
| 34 | CKTY | CLARK TRAVEL INC | | | SCAC3 |
| 35 | CKTZ | Centar za Kombinirani Transport Zagreb d.d. | | HR | VKM |
