| 1 | CRL | Corse Air International | IATA: SS, Callsign: Corsair, IATA Prefix: 923, IATA designator changed from CS. ICAO callsign changed from Charlie Sierra | F | AVCODES |
| 2 | CRL | Corse Air International | IATA: CS, Callsign: Charlie Sierra, IATA designator changed to SS. ICAO callsign changed to Corseair | F | AVCODES |
| 3 | CRL | Corsairfly | IATA: SS | | ICAO1 |
| 4 | CRL | Chicago Rail Link | added 7/1989; 1/1994-7/2005; eliminated 4/2006 | | NAKINA |
| 5 | CRL | Cudahy Car Lines (temporary) | 7/1935 | | NAKINA |
| 6 | CRL | Chicago Rail Link | added 7/89; 1/94-7/2000 | | NRHS |
| 7 | CRL | CHICAGO RAIL LINK | | | PWRC |
| 8 | CRL | Chicago Rail Link | | | RSRV |
| 9 | CRL | CRL Car Rail Logistics GmbH | | AT | VKM |
| 10 | CRLA | CARLA INDUSTRIES LTD | | | SCAC4 |
| 11 | CRLB | CONQUEST RACING LLC | | | SCAC4 |
| 12 | CRLC | CRST LOGISTICS INC | | | SCAC4 |
| 13 | CRLE | Michigan Air-Line Ry. Co. | added 4/2007 | | NAKINA |
| 14 | CRLE | Coe Rail, Inc. | added 7/1985; eliminated 1/1990; added 7/1990; 1/1994-7/2005; eliminated 4/2007 | | NAKINA |
| 15 | CRLE | Coe Rail, Inc. | eliminated 1/90; added 7/90; 1/94-7/2000 | | NRHS |
| 16 | CRLE | MICHIGAN AIR-LINE RWY. CO. [COE RAIL, INC.] | | | PWRC |
| 17 | CRLE | Coe Rail | | | RSRV |
| 18 | CRLE | COE RAIL INC | | | SCAC3 |
| 19 | CRLE | Coe Rail Inc. | | USA | TRAFFIC |
| 20 | CRLF | CHOICE RELOCATION INC | | | SCAC3 |
| 21 | CRLF | CHOICE RELOCATION INC | | | SCAC4 |
| 22 | CRLG | COLORADO AIRLINES INC | | | SCAC3 |
| 23 | CRLG | COUTURE LOGISTICS INC | | | SCAC4 |
| 24 | CRLH | CAROLINA SOUTHERN, INC | | | SCAC3 |
| 25 | CRLH | CAROLINA SOUTHERN INC | | | SCAC4 |
| 26 | CRLI | CARL TRANSPORTATION | | | SCAC3 |
| 27 | CRLI | CRALER INTERNATIONAL INC | | | SCAC4 |
| 28 | CRLJ | CHARLETT TRUCKING SERVICE LTD | | | SCAC3 |
| 29 | CRLK | CARMEL TRUCKING | | | SCAC3 |
| 30 | CRLL | CAROLINA NATIONAL TRANSPORTATION IN | | | SCAC4 |
| 31 | CRLM | CARROLL MOVING & STORAGE CO INC | | | SCAC3 |
| 32 | CRLM | CARROLLS MOVING & STORAGE CO INC | | | SCAC4 |
| 33 | CRLN | CROSBY LUMBER COMPANY INC | | | SCAC3 |
| 34 | CRLN | CARROLL MILL TRANSPORT LLC | | | SCAC4 |
| 35 | CRLO | CARROLL TRANSPORTATION | | | SCAC3 |
| 36 | CRLP | CARE LINE INC | | | SCAC3 |
| 37 | CRLQ | CARLESI TRUCKING CO | | | SCAC3 |
| 38 | CRLR | CARRETTA LOAD TO RIDE | | | SCAC3 |
| 39 | CRLS | CARROLLS TRANSFER INC | | | SCAC3 |
| 40 | CRLS | CORRALES TRUCKING | | | SCAC4 |
| 41 | CRLT | CARLI TRANSPORT, INC | | | SCAC3 |
| 42 | CRLT | CONTOUR LOGISTICS | | | SCAC4 |
| 43 | CRLU | SEACUBE CONTAINERS LLC | | USA | BIC |
| 44 | CRLU | CARLISLE LEASING INTERNATIONAL | | | PWRC |
| 45 | CRLU | Carlisle Leasing International | | | RSRV |
| 46 | CRLU | CARLISLE LEASING INTERNATIONAL | | | SCAC3 |
| 47 | CRLU | CARLISLE LEASING INTERNATIONAL | | | SCAC4 |
| 48 | CRLV | CLEAR LINK SHIPPING | | | SCAC3 |
| 49 | CRLX | Canadian Railserve Ltd. | 7/2000-7/2005 (not listed) | | NAKINA |
| 50 | CRLX | Cudahy Car Lines | eliminated 10/1965 | | NAKINA |
| 51 | CRLX | Cudahy Car Lines | 7/1937-1/1943 | | NAKINA |
| 52 | CRLX | Cudahy Packing Co. | 1/1945-7/1965 | | NAKINA |
| 53 | CRLX | The Cudahy Refrigerator Car Line (Cudahy Car Lines) (previously C.R.L.) | added 11/1934; 7/1935 | | NAKINA |
| 54 | CRLX | The Cudahy Refrigerator Car Line (Cudahy Car Lines) | Apr-38 | | NRHS |
| 55 | CRLX | Cudahy Packing Co. | 1/52-7/65 | | NRHS |
| 56 | CRLX | Cudahy Car Lines | eliminated 10/65 | | NRHS |
| 57 | CRLX | Canadian Railserve Ltd. | Jul-00 | | NRHS |
| 58 | CRLX | *CUDAHY CAR LINES [CUDAHY PACKING; CUDAHY REFRIGERATOR CAR LINE] | | | PWRC |
| 59 | CRLX | *CENTEX RAIL LINK, LTD. | | | PWRC |
| 60 | CRLX | +CANADIAN RAILSERVE LIMITED | | | PWRC |
| 61 | CRLX | Centex Rail Link (Canadian Railserve) | | | RSRV |
| 62 | CRLX | CANADIAN RAILSERVE LTD | | | SCAC4 |
| 63 | CRLX | Conrail Leasing | | USA | TRAFFIC |
| 64 | CRLY | CROWLEY, MARTIN A, TRUCKING | | | SCAC3 |
