| 3501 | CDKD | COLE DECKARD INC | | | SCAC3 |
| 3502 | CDKD | CRD TRUCKING | | | SCAC4 |
| 3503 | CDKG | CALDERA TRUCKING | | | SCAC3 |
| 3504 | CDKH | CONRAD TRUCKING INC | | | SCAC4 |
| 3505 | CDKI | CARPET DOCKS LTD INC | | | SCAC3 |
| 3506 | CDKI | CANDOCK INC | | | SCAC4 |
| 3507 | CDKR | C & D TRUCKING | | | SCAC4 |
| 3508 | CDKS | COMPASS-DOCKSIDE INC | | | SCAC3 |
| 3509 | CDKT | CLAUD, T K TRUCKING INC | | | SCAC3 |
| 3510 | CDKU | CONTAINERLAND DANMARK | | DK | BIC |
| 3511 | CDKU | CONTAINERLAND DANMARK | | | SCAC4 |
| 3512 | CDKV | CDK LOGISTICS SERVICES INC | | | SCAC4 |
| 3513 | CDKW | CERBA DENIZCILIK A S | | | SCAC4 |
| 3514 | CDKX | Royal Oak Charcoal Co., Northern Division | added 10/1968; eliminated 10/1969 | | NAKINA |
| 3515 | CDKX | Cliffs Dow Chemical Co. | 7/1935-10/1966; eliminated 10/1968 | | NAKINA |
| 3516 | CDKX | Cliffs Dow Chemical Co. | 4/38-10/66; eliminated 10/68 | | NRHS |
| 3517 | CDKX | Royal Oak Charcoal Co., Northern Division | added 10/68; eliminated 10/69 | | NRHS |
| 3518 | CDKX | *CLIFFS DOW CHEMICAL CO. | | | PWRC |
| 3519 | CDKX | *ROYAL OAK CHARCOAL CO., NORTHERN DIV. | | | PWRC |
| 3520 | CDKX | CLIFFS DOW CHEMICAL CO | | | SCAC3 |
| 3521 | CDKY | CAIN, DARRELL TRUCKING LLC | | | SCAC4 |
| 3522 | CDL | CC AIR, Inc. | IATA: ED, Callsign: Carolina, IATA Prefix: 354, Name changed from Sunbird Airlines, Inc. Designator ED recalled by IATA | USA | AVCODES |
| 3523 | CDL | Sunbird Airlines, Inc. | Callsign: Carolina, Name changed to CC AIR, Inc. | USA | AVCODES |
| 3524 | CDL | CC AIR, Inc. | Callsign: Carolina, IATA Prefix: 354, Name changed to CC AIR, Inc. d/b/a US Airways Express. Designator ED recalled by IATA | USA | AVCODES |
| 3525 | CDL | CC AIR, Inc. d/b/a US Airways Express | Callsign: Carolina, Founded in 1987. Ceased operations on 04 November 2002. Name changed from CC AIR, Inc. Designator ED recalled by IATA | USA | AVCODES |
| 3526 | CDL | Sunbird Airlines, Inc. | Callsign: Carolina, Name changed from CC AIR, Inc. d/b/a US Airways Express. | USA | AVCODES |
| 3527 | CDL | Sunbird Airlines | | | ICAO1 |
| 3528 | CDLA | CTS OF DETROIT LAKES INC | | | SCAC4 |
| 3529 | CDLD | COLDPORT LTD | | | SCAC3 |
| 3530 | CDLE | CLOVERDALE TRANSPORTATION COMPANY | | | SCAC3 |
| 3531 | CDLF | CAIN, DALE TRUCKING | | | SCAC3 |
| 3532 | CDLF | CASA DEL FOCLOR MEXICO | | | SCAC4 |
| 3533 | CDLG | CONKER DRAYAGE LLC | | | SCAC4 |
| 3534 | CDLH | CARPE DIEM LLAMAS | | | SCAC4 |
| 3535 | CDLI | COMMERCIAL DELIVERIES OF TULSA INC | | | SCAC3 |
| 3536 | CDLJ | C & D LEASING | | | SCAC3 |
| 3537 | CDLK | COLEMAN TRANSPORTATION INC | | | SCAC3 |
| 3538 | CDLK | CORNICK, DAVID LEROY AND J DOLORES | | | SCAC4 |
| 3539 | CDLL | CADDELL, M N TRUCKING | | | SCAC3 |
| 3540 | CDLM | CADILLAC MOVERS INC | | | SCAC3 |
| 3541 | CDLN | CONSODEL INC | | | SCAC3 |
| 3542 | CDLN | CEDARLANE LABORATORIES LIMITED | | | SCAC4 |
| 3543 | CDLO | CARDINAL MOVING & STORAGE INC | | | SCAC3 |
| 3544 | CDLO | CARDINALE MOVING & STORAGE INC | | | SCAC4 |
| 3545 | CDLP | CADILLAC LIMOUSINE SERVICE INC | | | SCAC3 |
| 3546 | CDLQ | CITY DRAY LINE | | | SCAC3 |
| 3547 | CDLR | C & L TRUCKING | | | SCAC3 |
| 3548 | CDLS | CADILLAC MOVING & STORAGE | | | SCAC3 |
| 3549 | CDLS | CANADA LIVE BAIT SUPPLY | | | SCAC4 |
| 3550 | CDLU | PT CENDANAWATI LOGISTIK INDONESIA | | RI | BIC |
| 3551 | CDLU | CONCORDE LINE CENTRAL AMERICAN SERVICE | | | SCAC3 |
| 3552 | CDLU | CONCORDE LINE CENTRAL AMERICAN | | | SCAC4 |
| 3553 | CDLV | CAREYS DELIVERY SERVICE | | | SCAC3 |
| 3554 | CDLW | CAUDILL, WARNELL | | | SCAC3 |
| 3555 | CDLX | General American Transportation Corp. | added 4/1953; 7/1954-10/1957; eliminated 7/1961 | | NAKINA |
| 3556 | CDLX | California Dispatch Line | 8/1920-1/1952; eliminated 4/1953 | | NAKINA |
| 3557 | CDLX | California Dispatch Line | 4/38-1/52 | | NRHS |
| 3558 | CDLX | General American Transportation Corp. | Oct-57 | | NRHS |
| 3559 | CDLX | (GATC) CALIFORNIA CHEMICAL DIV. OF WILSON & CO. [CALIFORNIA DISPATCH LINE] | | | PWRC |
| 3560 | CDLX | California Dispatch Line | | USA | TRAFFIC |
| 3561 | CDLY | C & D LEASING CO INC | | | SCAC3 |
| 3562 | CDLZ | CARDINAL FREIGHT CARRIERS | | | PWRC |
| 3563 | CDLZ | Cardinal Freight Carriers | | | RSRV |
| 3564 | CDLZ | CARDINAL FREIGHT CARRIERS | | | SCAC4 |
| 3565 | CDM | Carga Aerea Dominicana | Callsign: Carga Aerea, | DOM | AVCODES |
| 3566 | CDM | Carga Aerea Dominicana | | | ICAO1 |
| 3567 | CDM | Clinton, Davenport & Muscatine Ry. | 4/1938-1/1943 | | NAKINA |
| 3568 | CDM | Clinton, Davenport & Muscatine Ry. | Apr-38 | | NRHS |
| 3569 | CDM | CLINTON, DAVENPORT & MUSCATINE RWY. | | | PWRC |
| 3570 | CDMA | CHEAP DATE MOVING | | | SCAC3 |
| 3571 | CDMA | C D M EXPRESS INC | | | SCAC4 |
| 3572 | CDMB | COLORES DE MEXICO | | | SCAC4 |
| 3573 | CDMD | CENTRAL DE MUDANZAS | | | SCAC3 |
| 3574 | CDMD | COILCRAFT DE MEXICO S DE R L DE C V | | | SCAC4 |
| 3575 | CDMF | CARDINAL LOGISTICS MANAGEMENT CORPO | | | SCAC4 |
| 3576 | CDMG | COLEMAN, D MOVING & EXPRESS COMPANY | | | SCAC3 |
| 3577 | CDMG | CENTRE DU CAMION GAMACHE INC | | | SCAC4 |
| 3578 | CDMH | CALDARA MOVERS | | | SCAC3 |
| 3579 | CDMH | CDM TRANSPORT | | | SCAC4 |
| 3580 | CDMI | CADEMARTORI TRUCKING | | | SCAC3 |
| 3581 | CDMI | CADEMARTORI TRUCKING | | | SCAC4 |
| 3582 | CDMJ | CDM EXPRESS CORP | | | SCAC4 |
| 3583 | CDMK | CONDON, MARK G | | | SCAC3 |
| 3584 | CDMK | CEDAR MARKET INC | | | SCAC4 |
| 3585 | CDMN | C & D MAINTENANCE & SERVICE CO | | | SCAC3 |
| 3586 | CDMN | C & D MAINTENANCE & SERVICE CO | | | SCAC4 |
| 3587 | CDMO | CONSOLIDATED MOVING SERVICES INC | | | SCAC3 |
| 3588 | CDMQ | C & M DELIVERY SERVICE | | | SCAC3 |
| 3589 | CDMR | CRINOID MARINE S A HONG KONG | | | SCAC3 |
| 3590 | CDMR | CLIXX DIRECT MARKETING SERVICES INC | | | SCAC4 |
| 3591 | CDMS | CDM TRANSPORTATION SERVICES INC | | | SCAC3 |
| 3592 | CDMU | CONTAINER DEPOT MUNCHEN GMBH | | D | BIC |
| 3593 | CDMU | CONTAINER BEST DE POT MUNCHEN GMBH | | | SCAC4 |
| 3594 | CDMV | C & D MOVING CO INC | | | SCAC3 |
| 3595 | CDMW | CASA DE MUSICA DE LUXE,SA DE CV | | | SCAC4 |
| 3596 | CDMY | CERCAS DE MALLA Y CORTINAS DE ACERO | | | SCAC4 |
| 3597 | CDN | Canadian Airlines International Limited | IATA: CP, Callsign: Canadian, Merged into Air Canada. Formerly CP Air | CDN | AVCODES |
| 3598 | CDN | Canadian Helicopters Ltd | Callsign: Canadian, Name changed to Canadian Helicopters Limited d/b/a HNZ Global | CDN | AVCODES |
| 3599 | CDN | Canadian Helicopters Limited d/b/a HNZ Global | Callsign: Canadian, Name changed from Canadian Helicopters Ltd. | CDN | AVCODES |
| 3600 | CDN | Canadian Helicopters | | | ICAO1 |
