| 14001 | CQTH | CLIMAN TRANSPORTATION OF THE CAROLI | | | SCAC4 |
| 14002 | CQTI | CONTI SHIPPING | | | SCAC3 |
| 14003 | CQTI | CAROLINA QUALITY TRANSPORT INC | | | SCAC4 |
| 14004 | CQTK | C T C TRUCKING | | | SCAC3 |
| 14005 | CQTK | CONTINENTAL TRUCKING INC | | | SCAC4 |
| 14006 | CQTM | C T S | | | SCAC4 |
| 14007 | CQTP | CE TRANSPORT SERVICES INC | | | SCAC3 |
| 14008 | CQTQ | CONCERT TANKER CORPORATION | | | SCAC3 |
| 14009 | CQTR | C & M TRANSPORT INC | | | SCAC4 |
| 14010 | CQTS | COAST TRANSFER SYSTEMS | | | SCAC3 |
| 14011 | CQTT | C & T TRUCKING INC | | | SCAC3 |
| 14012 | CQTW | CENAC TOWING COMPANY INC | | | SCAC3 |
| 14013 | CQUA | CLASQUIN USA INC | | | SCAC4 |
| 14014 | CQUC | CINQUEGRANI, CHARLES | | | SCAC3 |
| 14015 | CQUD | CACIQUE USA | | | SCAC4 |
| 14016 | CQUE | CROSSTOWN COURIER INC | | | SCAC4 |
| 14017 | CQUG | CASALE, M & R TRUCKING INC | | | SCAC4 |
| 14018 | CQUI | CHIQUI INC | | | SCAC3 |
| 14019 | CQUM | CUSTOM STONE CO INC | | | SCAC4 |
| 14020 | CQUN | CANAROUTE INC | | | SCAC4 |
| 14021 | CQUO | COUEY, MARVIN HARBOR SERVICE | | | SCAC3 |
| 14022 | CQUR | COUTURE TRUCKING INC | | | SCAC3 |
| 14023 | CQUR | COUTURE TRUCKING INC | | | SCAC4 |
| 14024 | CQUT | CONQUEST TRUCKING | | | SCAC4 |
| 14025 | CQVI | CARLETON TRANSPORT SERVICE INC | | | SCAC4 |
| 14026 | CQVL | COAST TO COAST VAN LINES INC | | | SCAC4 |
| 14027 | CQVM | CONQUESTVENTURE MARITIME S A | | | SCAC4 |
| 14028 | CQWL | CROWN OIL CORPORATION | | | SCAC4 |
| 14029 | CQWT | CTC LOGISTICS INC | | | SCAC4 |
| 14030 | CQWZ | CTC LOGISTICS INC | | | SCAC4 |
| 14031 | CQYL | CENTURY LOGISTICS | | | SCAC4 |
| 14032 | CQYO | COX TRUCKING CO | | | SCAC3 |
| 14033 | CR | OAG Worldwide | ICAO: ABC, Name changed to UBM Aviation - OAG. Non-airline Org. in airline industry | GB | AVCODES |
| 14034 | CR | Miscellaneous Auxiliary Calegory | ICAO: XCR, Designator CR* recalled by IATA. Non-airline Org. in airline industry | USA | AVCODES |
| 14035 | CR | Rhodesian United Air Carriers | Callsign: Aircar, | RNY | AVCODES |
| 14036 | CR | Aerocaribbean S.A. | Callsign: Aerocaribbean, | C | AVCODES |
| 14037 | CR | Norfolk Southern R.R. Co. (Norfolk Southern) | added 7/1999; 7/2000-7/2005 | | NAKINA |
| 14038 | CR | Consolidated Rail Corp. | added 4/1976; 1/1980-1/1994; eliminated 7/1999 | | NAKINA |
| 14039 | CR | Copper Range R.R. Co. | 8/1920-10/1966 | | NAKINA |
| 14040 | CR | Copper Range R.R. Co. | 7/23-10/66 | | NRHS |
| 14041 | CR | Consolidated Rail Corp. | added 4/76; 1/80-1/94; eliminated 7/99 | | NRHS |
| 14042 | CR | Norfolk Southern R.R. Co. (Norfolk Southern) | added 7/99; 7/2000 | | NRHS |
| 14043 | CR | Cargo Rail GmbH | Dillingen | D | privat-bahn.de |
| 14044 | CR | NORFOLK SOUTHERN RWY. [CONRAIL, COPPER RANGE RR] | | | PWRC |
| 14045 | CR | Conrail (Norfolk Southern) | | | RSRV |
| 14046 | CR | CONSOLIDATED RAIL CORPORATION | | | SCAC4 |
| 14047 | CR | Consolidated Rail Corporation (Conrail) | | USA | TRAFFIC |
| 14048 | CR | Chiltern Railways | | UK | VKM |
| 14049 | CR&C | Carlton & Coast R.R. | 4/1938 | | NAKINA |
| 14050 | CR&C | Carlton & Coast R.R. | Apr-38 | | NRHS |
| 14051 | CR&C | CARLTON & COAST RAILROAD | | | PWRC |
| 14052 | CR&M | CHIPPEWA RIVER & MENOMONEE RWY | | | PWRC |
| 14053 | CR&N | Carolina & Northwestern Ry. | 4/1938-10/1966 | | NAKINA |
| 14054 | CR&N | Carolina & Northwestern Ry. | 4/38-10/66 | | NRHS |
| 14055 | CR&N | CAROLINA & NORTHWESTERN RWY. | | | PWRC |
| 14056 | CRA | Cronos Airlines | IATA: C8, Callsign: Cronos, Accounting code 498 recalled by IATA. | GQ | AVCODES |
| 14057 | CRA | Solutions Air Charter, LLC | Callsign: Crossroads, | USA | AVCODES |
| 14058 | CRA | CIMAS Emergency Air Rescue Service | Callsign: Cimas, | ZW | AVCODES |
| 14059 | CRA | Cronos Airlines | IATA: C8, Callsign: Cronos, Accounting code 498 recalled by IATA. | GQ | AVCODES |
| 14060 | CRA | Coronado Aerolineas | | | ICAO1 |
| 14061 | CRA | Peter CRAMER GmbH & Co. KG | | DE | VKM |
| 14062 | CRAA | CRAWFORD, R H | | | SCAC3 |
| 14063 | CRAA | CRAWFORD, R H INC | | | SCAC4 |
| 14064 | CRAB | CRABBS TRANSPORT, INC | | | SCAC3 |
| 14065 | CRAB | CRUZ RAMOS PERALES, FLORENCIO | | | SCAC4 |
| 14066 | CRAD | CONRAD TRUCKING INC | | | SCAC3 |
| 14067 | CRAD | CAMIONES RAPIDOS DEL NORTE SA DE CV | | | SCAC4 |
| 14068 | CRAF | CRAFT REFRIGERATED SERVICE, INC | | | SCAC3 |
| 14069 | CRAG | CRAIG TRANSPORTATION | | | SCAC3 |
| 14070 | CRAG | CARRILLO, AGUSTIN | | | SCAC4 |
| 14071 | CRAH | CRAVEN, HERBERT E & SON | | | SCAC3 |
| 14072 | CRAH | CRAFTSMAN TABLES | | | SCAC4 |
| 14073 | CRAI | CRA INC | | | SCAC3 |
| 14074 | CRAIL | CONTINENTAL RAIL | | ES | VKM |
| 14075 | CRAJ | CRAWFORD MOBLE HOMES | | | SCAC3 |
| 14076 | CRAK | CRACE CONTRACTING CO | | | SCAC3 |
| 14077 | CRAK | CRAFTWOOD | | | SCAC4 |
| 14078 | CRAL | COLLETTE, R A OIL CO | | | SCAC4 |
| 14079 | CRAM | CRAMPHIN, EUGENE | | | SCAC3 |
| 14080 | CRAN | CRAIN, LESTER | | | SCAC3 |
| 14081 | CRAN | CRANTON, GORDON | | | SCAC4 |
| 14082 | CRAO | CORONA TRUCKING INC | | | SCAC3 |
| 14083 | CRAO | CRUCES AMERICA SA DE CV | | | SCAC4 |
| 14084 | CRAP | COLUMBIA RIVER TRANSPORTATION INCOR | | | SCAC4 |
| 14085 | CRAQ | CARAS TRUCKING CO INC | | | SCAC3 |
| 14086 | CRAQ | C RAE TRANSPORT | | | SCAC4 |
| 14087 | CRAR | CROSSROADS COURIER INC | | | SCAC4 |
| 14088 | CRAS | CROSS K INC | | | SCAC4 |
| 14089 | CRAU | CARBOX CO-DOS DE COSTA RICA | | CR | BIC |
| 14090 | CRAW | CRAWFORD TRUCKING INC | | | SCAC4 |
| 14091 | CRAX | Crystal Hopper Associates | added 7/1983; eliminated 7/1986 | | NAKINA |
| 14092 | CRAX | Crystal Hopper Associates | eliminated 7/86 | | NRHS |
| 14093 | CRAX | CRYSTAL HOPPER ASSOCIATES | | | PWRC |
| 14094 | CRAX | Crystal Hopper Associates | | | RSRV |
| 14095 | CRAY | CLAY-RAY TRUCK LINE | | | SCAC3 |
| 14096 | CRAY | CRAIG, STEPHEN TRANSPORT | | | SCAC4 |
| 14097 | CRAZ | CORNUCOPIA TRANSPORTATION, INC. | | | PWRC |
| 14098 | CRAZ | Cornucopia Transportation | | | RSRV |
| 14099 | CRAZ | CORNUCOPIA TRANSPORTATION, INC. | | | SCAC4 |
| 14100 | CRB | Caribbean Air Tours & Services Charters, S.A. de C.V. | Callsign: Catsa, | HN | AVCODES |
