| 1 | CFR | Chauffair Ltd. | Ceased operations | GB | AVCODES |
| 2 | CFR | Africa One | | ZRE | AVCODES |
| 3 | CFR | California Department of Forestry and Fire Prevention | Callsign: Calfire, | USA | AVCODES |
| 4 | CFR | Africa One | | | ICAO1 |
| 5 | CFR | CAPE FEAR RAILWAYS, INC. | | | PWRC |
| 6 | CFR | Cãile Ferate Române | | RO | TRAFFIC |
| 7 | CFR | SNTFM CFR Marfa SA | | RO | VKM |
| 8 | CFRA | CANETT, FRANK D SERVICES | | | SCAC4 |
| 9 | CFRB | CROFT, R & B TRANSPORTATION | | | SCAC3 |
| 10 | CFRB | COLEMAN AMERICAN MOVING SERVICES IN | | | SCAC4 |
| 11 | CFRBF | Compagnie Ferroviaire Régionale de Bourgogne Franche-Comté | | F | TRAFFIC |
| 12 | CFRBF | Compagnie Ferroviaire Regionale | | FR | VKM |
| 13 | CFRC | CUSTOM FREIGHT SERVICES INC | | | SCAC4 |
| 14 | CFRD | CRYSTAL FARMS RDC | | | SCAC4 |
| 15 | CFRE | CALIFORNIA REFRIGERATED EXPRESS INC | | | SCAC3 |
| 16 | CFRF | CAIFORNIA REFRIGERATED SERVICES INC | | | SCAC3 |
| 17 | CFRF | CFR LINE | | | SCAC4 |
| 18 | CFRG | C L & E FREIGHT SERVICE | | | SCAC3 |
| 19 | CFRH | CARE-FREE TRANSIT | | | SCAC3 |
| 20 | CFRH | C-FORCE MARINE LTD | | | SCAC4 |
| 21 | CFRI | CONDOR FREIGHT LINES | | | SCAC3 |
| 22 | CFRI | CRAFT RUG MILLS | | | SCAC4 |
| 23 | CFRJ | CRITES FARMS | | | SCAC3 |
| 24 | CFRK | COMFORT TRUCKING INC | | | SCAC3 |
| 25 | CFRL | CENTRAL FREIGHTLINES LTD | | | SCAC4 |
| 26 | CFRM | CHICAGO FREIGHT SYSTEMS, INC | | | SCAC3 |
| 27 | CFRM | CHICAGO FREIGHT SYSTEMS INC | | | SCAC4 |
| 28 | CFRM | CFR Marfa | | RO | TRAFFIC |
| 29 | CFRO | CALIFORNIA RELOCATION SERVICES INC | | | SCAC3 |
| 30 | CFRO | CALIFORNIA RELOCATION SERVICES INC | | | SCAC4 |
| 31 | CFRP | CARE-FREE TRANSPORTAITON INC | | | SCAC3 |
| 32 | CFRQ | CALIFORNIA FREIGHT LINES | | | SCAC3 |
| 33 | CFRQ | CALIFORNIA FREIGHT LINES | | | SCAC4 |
| 34 | CFRR | Chemin de fer Rivière Romaine | | | RSRV |
| 35 | CFRR | CALIFORNIA REFRIGERATED EXPRESS | | | SCAC3 |
| 36 | CFRS | CROUCH FREIGHT SYSTEMS INC | | | SCAC3 |
| 37 | CFRS | CONVENTION FREIGHT SERVICES INC | | | SCAC4 |
| 38 | CFRT | CONTAINERFREIGHT TRANSPORTATION COM | | | SCAC3 |
| 39 | CFRT | CONTAINERFREIGHT EIT LLC | | | SCAC4 |
| 40 | CFRU | CF&S RUSSIA LTD | | RUS | BIC |
| 41 | CFRU | CARDINAL FREIGHT CARRIERS | | | PWRC |
| 42 | CFRU | Cardinal Freight Carriers | | | RSRV |
| 43 | CFRU | CARDINAL FREIGHT CARRIERS | | | SCAC3 |
| 44 | CFRU | CARDINAL FREIGHT CARRIERS | | | SCAC4 |
| 45 | CFRV | COMPLETE FREIGHT SERVICES LLC | | | SCAC4 |
| 46 | CFRW | Caney Fork and Western R.R., Inc. | added 7/1984 | | NAKINA |
| 47 | CFRW | Caney Fork and Western R.R., Inc. | added 7/84 | | NRHS |
| 48 | CFRW | CONTACT FREIGHT SYSTEMS INC | | | SCAC3 |
| 49 | CFRW | CRYSTAL FARMS RDC (LAKE MILLS DIVIS | | | SCAC4 |
| 50 | CFRX | Chicago Freight Car Leasing Co. | added 4/1963; 7/1965-1/1980; eliminated 1/1983 | | NAKINA |
| 51 | CFRX | Chicago Freight Car Co. | added 4/1959; 4/1961; eliminated 4/1963 | | NAKINA |
| 52 | CFRX | Chicago Freight Car & Parts Co. | 1/1952-10/1957; eliminated 4/1959 | | NAKINA |
| 53 | CFRX | Canfield Refining Co. | 8/1920-7/1923 | | NAKINA |
| 54 | CFRX | Chicago Freight Car & Parts Co. | 1/52-10/57 | | NRHS |
| 55 | CFRX | Chicago Freight Car Co. | Apr-61 | | NRHS |
| 56 | CFRX | Chicago Freight Car Leasing Co. | 7/65-1/80; eliminated 1/83 | | NRHS |
| 57 | CFRX | *CANFIELD REFINING CO. | | | PWRC |
| 58 | CFRX | *CHICAGO FREIGHT CAR LEASING CO | | | PWRC |
| 59 | CFRX | CHICAGO FREIGHT CAR LEASING CO | | | SCAC3 |
| 60 | CFRY | CAFFRAY, TOM SERVICE | | | SCAC3 |
| 61 | CFRY | COMERCIALIZADORA FREGOSO | | | SCAC4 |
