| 1 | CDC | Carga Del Caribe, S.A. de C.V. | Callsign: Carga Delcaribe, | MEX | AVCODES |
| 2 | CDC | CDI Cargo Airline Limited | IATA: GJ, Callsign: Hualong, IATA Prefix: 891, Name changed to Zhejiang Loong Airlines Co., Ltd. Founded in April 2011. | PRC | AVCODES |
| 3 | CDC | Zhejiang Loong Airlines Co., Ltd. | IATA: GJ, Callsign: Hualong, IATA Prefix: 891, ICAO Callsign changed to Loong Air. | PRC | AVCODES |
| 4 | CDC | Zhejiang Loong Airlines Co., Ltd. | IATA: GJ, Callsign: Loong Air, IATA Prefix: 891, ICAO Callsign changed from Hualong. | PRC | AVCODES |
| 5 | CDC | CUMBERLAND RY. & COAL CO. | | | PWRC |
| 6 | CDC | CD Cargo | | CZ | TRAFFIC |
| 7 | CDC | ČD Cargo a.s. | | CZ | VKM |
| 8 | CDCA | C & D CARTAGE INC | | | SCAC3 |
| 9 | CDCB | CRANDALL CORPORATION | | | SCAC3 |
| 10 | CDCC | CDC CARIBE INC | | | SCAC4 |
| 11 | CDCD | CEDARCREST DELIVERIES INC | | | SCAC3 |
| 12 | CDCD | CARDENAS CEVALLOS, DANIEL | | | SCAC4 |
| 13 | CDCE | CEDAR CREEK ENTERPRISES | | | SCAC3 |
| 14 | CDCE | CD CONSTRUCTION DRILLING INC | | | SCAC4 |
| 15 | CDCF | C & D CARTAGE | | | SCAC3 |
| 16 | CDCG | CARDINAL CARTAGE, INC | | | SCAC3 |
| 17 | CDCG | CDC TRUCKING | | | SCAC4 |
| 18 | CDCH | CANDICE MARITIME S A | | | SCAC4 |
| 19 | CDCI | CRAIGS DISTRIBUTION & CONSOLIDATION | | | SCAC3 |
| 20 | CDCI | CDC INC | | | SCAC4 |
| 21 | CDCJ | COLUMBIA DISTRIBUTING CO | | | SCAC3 |
| 22 | CDCJ | COMPUTER DISCOUNT CENTER TSS INC | | | SCAC4 |
| 23 | CDCM | CHURCH/DC EXPRESS | | | SCAC3 |
| 24 | CDCM | CDC LOGISTICS LC | | | SCAC4 |
| 25 | CDCN | C & D CONSOLIDATED INC | | | SCAC3 |
| 26 | CDCN | C D CONSULTANTS | | | SCAC4 |
| 27 | CDCO | CEDAR CO, THE | | | SCAC3 |
| 28 | CDCO | CONCRETE DELIVERY CO INC | | | SCAC4 |
| 29 | CDCP | C D C PET | | | SCAC4 |
| 30 | CDCR | CAN DO CRANE SERVICE LTD | | | SCAC4 |
| 31 | CDCS | C D COURIER SERVICE | | | SCAC3 |
| 32 | CDCS | COMPONENTES DE CALIDAD SA DE CV | | | SCAC4 |
| 33 | CDCST | CDC STAR SRL | | RO | VKM |
| 34 | CDCT | CARDINAL CHARTERS AND TOURS | | | SCAC3 |
| 35 | CDCU | CEDROB CARGO SP. Z O.O. | | PL | BIC |
| 36 | CDCV | C D COURIER INC | | | SCAC3 |
| 37 | CDCX | Air Liquide IC GP LLC d/b/a Air Liquide Industrial U.S. LP | added 7/2008 | | NAKINA |
| 38 | CDCX | Air Liquide America Corp. | added 1/1995; 7/2000-7/2005; eliminated 7/2008 | | NAKINA |
| 39 | CDCX | Liquid Air Corp. | added 4/1990; 1/1994; eliminated 1/1995 | | NAKINA |
| 40 | CDCX | Merchants Despatch Transportation Corp. | added 7/1955; 10/1957-10/1966; eliminated 7/1969 | | NAKINA |
| 41 | CDCX | Capitol Dairy Co. | 7/1935-7/1937 | | NAKINA |
| 42 | CDCX | Merchants Despatch Transportation Corp. | added 7/55; 10/57-10/66; eliminated 7/69 | | NRHS |
| 43 | CDCX | Liquid Air Corp. | added 4/90; 1/94; eliminated 1/95 | | NRHS |
| 44 | CDCX | Air Liquide America Corp. | added 1/95; 7/2000 | | NRHS |
| 45 | CDCX | *CAPITOL DAIRY CO. | | | PWRC |
| 46 | CDCX | +AIR LIQUIDE AMERICA [LIQUID AIR CORPORATION; MERCHANTS DESPATCH TRANSPORTATION CORP.] | | | PWRC |
| 47 | CDCX | Capitol Dairy Co. (Air Liquide America Corporation) | | | RSRV |
| 48 | CDCX | AIR LIQUIDE AMERICA CORPORATION | | | SCAC4 |
| 49 | CDCY | COMMAND CARGO COMPANY INC | | | SCAC3 |
| 50 | CDCY | CEDAR COUNTY COOPERATIVE | | | SCAC4 |
