| 1 | CCT | Cetty Taxi Aereo Nacional, S.A. de C.V. | Callsign: Cetty, | MEX | AVCODES |
| 2 | CCT | Catran AG | Callsign: Catran, | CH | AVCODES |
| 3 | CCT | Connect Air Ltd. | Callsign: Connect, | CDN | AVCODES |
| 4 | CCT | Central California Traction Co. | 1/1941-1/1994; eliminated 10/1998; 7/2000-7/2005 | | NAKINA |
| 5 | CCT | Central California Traction Co. | 1/52-1/94; eliminated 10/98; 7/2000 | | NRHS |
| 6 | CCT | CENTRAL CALIFORNIA TRACTION CO. | | | PWRC |
| 7 | CCT | Central California Traction | | | RSRV |
| 8 | CCT | CENTRAL CALIFORNIA TRACTION COMPANY | | | SCAC4 |
| 9 | CCT | Central California Traction | | USA | TRAFFIC |
| 10 | CCTA | CORPUS CHRISTI TERMINAL ASSOCIATION (OUT OF OPERATION) | | | PWRC |
| 11 | CCTB | CASTELLINI COMPANY | | | SCAC3 |
| 12 | CCTB | CASTELLINI COMPANY | | | SCAC4 |
| 13 | CCTC | COAST TO COAST TRUCKING INC | | | SCAC4 |
| 14 | CCTD | CANART CATTLE CO LTD | | | SCAC4 |
| 15 | CCTE | CONTINENTAL CATTLE CARRIERS LTD | | | SCAC3 |
| 16 | CCTE | CONTINENTAL CATTLE CARRIERS LTD | | | SCAC4 |
| 17 | CCTG | CONSOLIDATED CARTAGE COMPANY INC | | | SCAC3 |
| 18 | CCTH | C & C TRUCKING | | | SCAC3 |
| 19 | CCTI | C & C TRANSPORT INC | | | SCAC3 |
| 20 | CCTI | CONTAINER CONNECTION OF TEXAS INC | | | SCAC4 |
| 21 | CCTJ | CIRCLE C TRUCK BROKERAGE | | | SCAC3 |
| 22 | CCTK | CROSS COUNTRY TRUCKING INC | | | SCAC4 |
| 23 | CCTM | CITY CAR TERMINAL INC | | | SCAC3 |
| 24 | CCTM | COAST TO COAST TRANSPORT LTD | | | SCAC4 |
| 25 | CCTN | CASEY CARTING CO INC | | | SCAC3 |
| 26 | CCTN | COASTAL CARRIERS TRUCK LINES INC | | | SCAC4 |
| 27 | CCTO | C & C TRANSPORT CO | | | SCAC3 |
| 28 | CCTO | COAST TO COAST TRANSPORT LTD | | | SCAC4 |
| 29 | CCTP | CHANICE & CHANICE TRANSPORTATION, I | | | SCAC3 |
| 30 | CCTQ | CONCORD TRUCKING | | | SCAC3 |
| 31 | CCTQ | CHARLES CATTLE CO LTD | | | SCAC4 |
| 32 | CCTR | C & C TRANSPORT INC | | | SCAC3 |
| 33 | CCTU | COORDINATED CARIBBEAN TRANSPORT, INC. | | | PWRC |
| 34 | CCTU | Coordinated Caribbean Transport | | | RSRV |
| 35 | CCTU | CRAIGS CONTAINER COMPANY | | | SCAC4 |
| 36 | CCTV | CARSON CITY TRANSFER & STORAGE | | | SCAC3 |
| 37 | CCTV | C & | | | SCAC4 |
| 38 | CCTW | COORDINATED CARIBBEAN TRANSPORT, INC. | | | PWRC |
| 39 | CCTW | COORDINATED CARIBBEAN TRANSPORT, | | | SCAC3 |
| 40 | CCTX | Coleto Creek Power WLE, LP | 7/2005 (not listed) | | NAKINA |
| 41 | CCTX | Central Power and Light Co. | 1/1980; added 4/1980; 1/1994-7/2000; eliminated 1/2005 | | NAKINA |
| 42 | CCTX | Central Power and Light Co. | 1/80; added 4/80; 1/94-7/2000 | | NRHS |
| 43 | CCTX | *CENTRAL POWER AND LIGHT CO. | | | PWRC |
| 44 | CCTX | +COLETO CREEK POWER WLE, LP | | | PWRC |
| 45 | CCTX | Central Power and Light | | | RSRV |
| 46 | CCTX | COLETO CREEK POWER WLE LP | | | SCAC4 |
| 47 | CCTY | C & C TRUCKING | | | SCAC3 |
| 48 | CCTY | C & C TRUCKING | | | SCAC4 |
| 49 | CCTZ | CROWLEY MARITIME CORP. | | | PWRC |
| 50 | CCTZ | Crowley Maritime Corporation | | | RSRV |
| 51 | CCTZ | CROWLEY MARITIME CORP. | | | SCAC4 |