| 14401 | CRHN | CORRIHER TRUCKING INC | | | SCAC3 |
| 14402 | CRHN | CORRIHER TRUCKING INC | | | SCAC4 |
| 14403 | CRHO | CROWTHER TRUCKING CO | | | SCAC3 |
| 14404 | CRHP | CHRISTOPHER TRANSPORT | | | SCAC3 |
| 14405 | CRHQ | CHAPERON, RICHARD | | | SCAC3 |
| 14406 | CRHS | CARRIAGE HOUSE PRINTERS LTD, THE | | | SCAC4 |
| 14407 | CRHT | CROLL, RICH TRUCKING | | | SCAC3 |
| 14408 | CRHU | CROS CONSTRUCT SRL | | RO | BIC |
| 14409 | CRHU | CROATIA LINE | | | SCAC4 |
| 14410 | CRHV | CROSSEN, RAY HORSE VANS INC | | | SCAC3 |
| 14411 | CRHW | CONTAINER HOME SUPPLY INC | | | SCAC4 |
| 14412 | CRHX | Clapp Riley & Hall Equipment Co. | 7/1930-7/1932; 7/1937-4/1961 (not listed) | | NAKINA |
| 14413 | CRHX | Clapp Riley & Hall Equipment Co. | 1/52-4/61 | | NRHS |
| 14414 | CRHX | CLAPP RILEY & HALL EQUIPMENT CO. | | | PWRC |
| 14415 | CRI | Consorcio Aereo, S.A. de C.V. | Callsign: Consorico, | MEX | AVCODES |
| 14416 | CRI | Cirrus Airlines Pty Ltd. | | AUS | AVCODES |
| 14417 | CRI | Crown Air, S.A. de C.V. | Callsign: Croair, | MEX | AVCODES |
| 14418 | CRI | Chicago River & Indiana R.R. Co. | 7/1923 & 10/1966 | | NAKINA |
| 14419 | CRI | Consolidated Rail Corp. | added 4/1976; 1/1980; eliminated 1/1983; 1/1994 | | NAKINA |
| 14420 | CRI | Chicago River & Indiana R.R. | 4/1938-7/1965 & 1/1975; eliminated 4/1976 | | NAKINA |
| 14421 | CRI | Chicago River & Indiana R.R. Co. | 8/1920 & 7/1930-7/1936 | | NAKINA |
| 14422 | CRI | Chicago River & Indiana R.R. Co. | 7/23 & 10/66 | | NRHS |
| 14423 | CRI | Chicago River & Indiana R.R. | 4/38-7/65 & 1/75; eliminated 4/76 | | NRHS |
| 14424 | CRI | Consolidated Rail Corp. | added 4/76; 1/80; eliminated 1/83; 1/94 | | NRHS |
| 14425 | CRI | CONSOLIDATED RAIL CORP. [CHICAGO RIVER & INDIANA RR] | | | PWRC |
| 14426 | CRI | Chicago River & Indiana | | USA | TRAFFIC |
| 14427 | CRI&P | CHICAGO ROCK ISLAND & PACIFIC RAILROAD | | | PWRC |
| 14428 | CRIB | CARIBE PACIFIC CARRIERS INC | | | SCAC3 |
| 14429 | CRIB | CRTR INC | | | SCAC4 |
| 14430 | CRIC | CARMIL INC | | | SCAC3 |
| 14431 | CRID | CARRI INCORPORATED | | | SCAC3 |
| 14432 | CRID | CATSKILL EXPRESS LLC | | | SCAC4 |
| 14433 | CRIE | CONREP | | | SCAC4 |
| 14434 | CRIF | CRUCES INTERNACIONALES FALCON SA DE | | | SCAC4 |
| 14435 | CRIG | CRAIG MOVERS INC | | | SCAC3 |
| 14436 | CRIG | CRAIG MOVERS INC | | | SCAC4 |
| 14437 | CRII | CENTRAL RIGGING & TRUCKING CO INC | | | SCAC3 |
| 14438 | CRIJ | Carolina Rail Services, Co. | added 4/1987; eliminated 1/1990; 1/1994-7/2005 | | NAKINA |
| 14439 | CRIJ | Carolina Rail Services, Co. | added 4/87; eliminated 1/90; 1/94-7/2000 | | NRHS |
| 14440 | CRIJ | CAROLINA RAIL SERVICES, LLC | | | PWRC |
| 14441 | CRIJ | Carolina Rail Services | | | RSRV |
| 14442 | CRIJ | CAROLINA RAIL SERVICES INC | | | SCAC3 |
| 14443 | CRIK | CREST INTERSTATE TRUCKING CO | | | SCAC3 |
| 14444 | CRIL | CARGO INTERNATIONAL | | | SCAC3 |
| 14445 | CRIM | CRIMBLY TRUCKING SERVICE, INC | | | SCAC3 |
| 14446 | CRIN | CHRIN BROS | | | SCAC3 |
| 14447 | CRIN | CRISPI, M INTERNATIONAL LTD | | | SCAC4 |
| 14448 | CRIO | CRITES OIL CO | | | SCAC3 |
| 14449 | CRIP | CHICAGO ROCK ISLAND & PACIFIC RR | | | PWRC |
| 14450 | CRIP | CHICAGO, ROCK ISLAND & PACIFIC | | | SCAC3 |
| 14451 | CRIP | CLARK & REID COMPANY INC | | | SCAC4 |
| 14452 | CRIP | Chicago, Rock Island & Pacific Railroad | | USA | TRAFFIC |
| 14453 | CRIQ | CRAIG ENTERPRISES | | | SCAC3 |
| 14454 | CRIQ | CARTER, CHARLES H & SON INC | | | SCAC4 |
| 14455 | CRIR | CRUISE INTERMODAL CORPORATION | | | SCAC3 |
| 14456 | CRIR | CRUISE INTERMODAL CORPORATION | | | SCAC4 |
| 14457 | CRIT | CRITES TRANSFER INC | | | SCAC3 |
| 14458 | CRIU | CRAY RESEARCH INC. | | | SCAC3 |
| 14459 | CRIV | CASTLEMAN RIVER RR | | | PWRC |
| 14460 | CRIV | CROSSRIVER INDUSTRIES INC | | | SCAC3 |
| 14461 | CRIV | CROSSRIVER INDUSTRIES INC | | | SCAC4 |
| 14462 | CRIW | CRIST, WILLIAM | | | SCAC3 |
| 14463 | CRIW | CARRIER TRUCK CENTRE | | | SCAC4 |
| 14464 | CRIX | Citicorp Railmark, Inc. | added 7/1990; 1/1994-7/2005 | | NAKINA |
| 14465 | CRIX | General Electric Railcar Services Corp. | added 1/1984; eliminated 7/1986 | | NAKINA |
| 14466 | CRIX | North American Car Corp. | added 1/1961; 4/1961-1/1980; eliminated 1/1984 | | NAKINA |
| 14467 | CRIX | North Western Refrigerator Line Division North American Car Corp. | added 10/1958; eliminated 1/1961 | | NAKINA |
| 14468 | CRIX | North Western Refrigerator Line Co., a Division North American Car Corp. | added 4/1958; eliminated 10/1958 | | NAKINA |
| 14469 | CRIX | Cherry River Extract Co. (Armour Car Lines) | 7/1923 | | NAKINA |
| 14470 | CRIX | North Western Refrigerator Line Co., a Division North American Car Corp. | eliminated 10/58 | | NRHS |
| 14471 | CRIX | North Western Refrigerator Line Division North American Car Corp. | added 10/58; 4/61 | | NRHS |
| 14472 | CRIX | North American Car Corp. | 7/65-1/80 | | NRHS |
| 14473 | CRIX | General Electric Railcar Services Corp. | eliminated 7/86 | | NRHS |
| 14474 | CRIX | Citicorp Railmark, Inc. | added 7/90; 1/94-7/2000 | | NRHS |
| 14475 | CRIX | *CHERRY RIVER EXTRACT CO. (ARMOUR CAR LINES) | | | PWRC |
| 14476 | CRIX | *CITY OF RICHMOND INDIANA | | | PWRC |
| 14477 | CRIX | +CITICORP RAILMARK, INC.{GE RAILCAR SERVICES CORP.; NORTH AMERICAN CAR CORP.] | | | PWRC |
| 14478 | CRIX | Citicorp Railmark | | | RSRV |
| 14479 | CRIX | CITICORP RAILMARK, INC. | | | SCAC4 |
| 14480 | CRIX | Citicorp Railmark, Inc. | | USA | TRAFFIC |
| 14481 | CRJ | Cargojet | Callsign: Cargojet, | MK | AVCODES |
| 14482 | CRJ | Air Cruzal | Callsign: Air Cruzal, | ANG | AVCODES |
| 14483 | CRJ | Air Cruzal | | | ICAO1 |
| 14484 | CRJB | CRANE, J TRANSPORTATION CO INC | | | SCAC3 |
| 14485 | CRJC | CARR, JOHN C | | | SCAC3 |
| 14486 | CRJC | CORMAN, R J CONSTRUCTION LLC | | | SCAC4 |
| 14487 | CRJD | CORMAN, R J DERAILMENT SERVICES LLC | | | SCAC4 |
| 14488 | CRJE | C R C EXPRESS | | | SCAC3 |
| 14489 | CRJF | CHAMPION RACING INC | | | SCAC4 |
| 14490 | CRJH | CROWE, JOHN CO | | | SCAC3 |
| 14491 | CRJJ | C & R | | | SCAC4 |
| 14492 | CRJK | CHALLENGE RACING LLC | | | SCAC4 |
| 14493 | CRJL | CARTERS | | | SCAC3 |
| 14494 | CRJM | CARLS TRUCK | | | SCAC3 |
| 14495 | CRJN | CAMERON, R & J & SONS | | | SCAC4 |
| 14496 | CRJO | CARJO TRUCKING CO | | | SCAC3 |
| 14497 | CRJO | CAR-MEL TRACK BROKERAGE INC | | | SCAC4 |
| 14498 | CRJP | CORRIN, J P ENR | | | SCAC4 |
| 14499 | CRJQ | CASTLE ROCK ENTERPRISES | | | SCAC4 |
| 14500 | CRJR | C R & J TRANSPORT INC | | | SCAC4 |
