| 1 | CRR | Carranza | Callsign: Carranza, | RCH | AVCODES |
| 2 | CRR | Chandler Flyers | Callsign: Courier, | USA | AVCODES |
| 3 | CRR | Canadian Pacific Railway | Callsign: Railcar, | CDN | AVCODES |
| 4 | CRR | Carranza | | | ICAO1 |
| 5 | CRR | CSX Transportation, Inc. | added 7/1987; 1/1994-7/2005 | | NAKINA |
| 6 | CRR | Seaboard System R.R., Inc. | added 1/1983; eliminated 7/1987 | | NAKINA |
| 7 | CRR | Clinchfield R.R. Co. | 4/1938-10/1966 & 1/1975-1/1980; eliminated 1/1983 | | NAKINA |
| 8 | CRR | Clinchfield R.R. Co. | 4/38-10/66 & 1/75-1/80; eliminated 1/83 | | NRHS |
| 9 | CRR | Seaboard System R.R., Inc. | added 1/83; eliminated 7/87 | | NRHS |
| 10 | CRR | CSX Transportation, Inc. | added 7/87; 1/94-7/2000 | | NRHS |
| 11 | CRR | *CHESTNUT RIDGE RAILWAY CO. | | | PWRC |
| 12 | CRR | +CSX TRANSPORTATION [SEABOARD] [CLINCHFIELD RR] | | | PWRC |
| 13 | CRR | Clinchfield Railroad (CSX Transportation) | | | RSRV |
| 14 | CRR | Clinchfield R.R. Co. | | USA | TRAFFIC |
| 15 | CRRA | CR Rail | Real: CR | AUS | TRAFFIC |
| 16 | CRRB | CARIBBEAN TANKER CORPORATION | | | SCAC3 |
| 17 | CRRB | CARIBBEAN TANKER CORPORATION | | | SCAC4 |
| 18 | CRRC | CHIPPEWA RIVER RAILROAD COMPANT | | | PWRC |
| 19 | CRRC | CRITSER, RUSSELL TRUCKING | | | SCAC3 |
| 20 | CRRC | CARRIER, RICHARD TRUCKING INC | | | SCAC4 |
| 21 | CRRD | CARROLLTON RAILROAD, THE | | | SCAC3 |
| 22 | CRRD | CRAFT, ROD | | | SCAC4 |
| 23 | CRRE | CORREO INTERNATIONAL TRUCKING INC | | | SCAC4 |
| 24 | CRRF | CORSAIR FREIGHTWAYS CORP | | | SCAC3 |
| 25 | CRRF | CARRS FREIGHT AGENT INC | | | SCAC4 |
| 26 | CRRG | CORRIGAN MOVING AND STORAGE CO | | | SCAC3 |
| 27 | CRRG | CORRIGAN MOVING & STORAGE CO | | | SCAC4 |
| 28 | CRRH | CRONER CARTAGE | | | SCAC3 |
| 29 | CRRI | C R & R INC | | | SCAC4 |
| 30 | CRRJ | C R TRUCKING COMPANY | | | SCAC3 |
| 31 | CRRK | CARRS TRUCKING CO | | | SCAC3 |
| 32 | CRRL | CARROLL TRUCKING INC | | | SCAC3 |
| 33 | CRRL | C & R EXPRESS LINES INC | | | SCAC4 |
| 34 | CRRM | COLORADO RAILROAD MUSEUM | | | PWRC |
| 35 | CRRM | CARRS MOVING & STORAGE CO | | | SCAC3 |
| 36 | CRRO | CARROLLS TRUCKING | | | SCAC3 |
| 37 | CRRP | COASTAL CARRIERS | | | SCAC3 |
| 38 | CRRQ | CAROLINA CARRIERS INC | | | SCAC3 |
| 39 | CRRQ | C & R | | | SCAC4 |
| 40 | CRRR | COPPER RANGE REFRIGERATOR | | | PWRC |
| 41 | CRRR | Copper Range Refrigerator | | | RSRV |
| 42 | CRRR | CARRERA INTERNATIONAL LTD | | | SCAC3 |
| 43 | CRRS | COMMODORE RO/RO SERVICE | | | PWRC |
| 44 | CRRS | CARRIES BUS LINE | | | SCAC3 |
| 45 | CRRS | CARRIAGE LOGISTICS INC | | | SCAC4 |
| 46 | CRRT | CARR TRUCK SERVICE, INC | | | SCAC3 |
| 47 | CRRU | CRIMSON SHIPPING CO. INC. | | USA | BIC |
| 48 | CRRU | Crimson Shipping | | | RSRV |
| 49 | CRRW | C & R GIN INC | | | SCAC3 |
| 50 | CRRX | Canon City & Royal Gorge R.R. LLC | 7/2000-7/2005 (not listed) | | NAKINA |
| 51 | CRRX | Cedar Rapids Refrigerator Line | 8/1920-7/1932 | | NAKINA |
| 52 | CRRX | Canon City & Royal Gorge R.R. LLC | Jul-00 | | NRHS |
| 53 | CRRX | *CEDAR RAPIDS REFRIGERATOR LINE | | | PWRC |
| 54 | CRRX | +CAN~ON CITY & ROYAL GORGE RAILROAD, LLC | | | PWRC |
| 55 | CRRX | Cañon City and Royal Gorge Railroad | | | RSRV |
| 56 | CRRX | CANON CITY & ROYAL GORGE RAILROAD L | | | SCAC4 |
| 57 | CRRX | Canon City & Royal Gorge R.R. LLC | | USA | TRAFFIC |
| 58 | CRRY | CARRY TRANSIT INC | | | SCAC3 |
| 59 | CRRY | CARRY TRANSIT | | | SCAC4 |
