| 5301 | CFQS | CONTINENTAL FREIGHT SERVICES INC | | | SCAC4 |
| 5302 | CFQV | CALIFORNIA FREIGHT SERVICES | | | SCAC4 |
| 5303 | CFR | Chauffair Ltd. | Ceased operations | GB | AVCODES |
| 5304 | CFR | Africa One | | ZRE | AVCODES |
| 5305 | CFR | California Department of Forestry and Fire Prevention | Callsign: Calfire, | USA | AVCODES |
| 5306 | CFR | Africa One | | | ICAO1 |
| 5307 | CFR | CAPE FEAR RAILWAYS, INC. | | | PWRC |
| 5308 | CFR | Cãile Ferate Române | | RO | TRAFFIC |
| 5309 | CFR | SNTFM CFR Marfa SA | | RO | VKM |
| 5310 | CFRA | CANETT, FRANK D SERVICES | | | SCAC4 |
| 5311 | CFRB | CROFT, R & B TRANSPORTATION | | | SCAC3 |
| 5312 | CFRB | COLEMAN AMERICAN MOVING SERVICES IN | | | SCAC4 |
| 5313 | CFRBF | Compagnie Ferroviaire Régionale de Bourgogne Franche-Comté | | F | TRAFFIC |
| 5314 | CFRBF | Compagnie Ferroviaire Regionale | | FR | VKM |
| 5315 | CFRC | CUSTOM FREIGHT SERVICES INC | | | SCAC4 |
| 5316 | CFRD | CRYSTAL FARMS RDC | | | SCAC4 |
| 5317 | CFRE | CALIFORNIA REFRIGERATED EXPRESS INC | | | SCAC3 |
| 5318 | CFRF | CAIFORNIA REFRIGERATED SERVICES INC | | | SCAC3 |
| 5319 | CFRF | CFR LINE | | | SCAC4 |
| 5320 | CFRG | C L & E FREIGHT SERVICE | | | SCAC3 |
| 5321 | CFRH | CARE-FREE TRANSIT | | | SCAC3 |
| 5322 | CFRH | C-FORCE MARINE LTD | | | SCAC4 |
| 5323 | CFRI | CONDOR FREIGHT LINES | | | SCAC3 |
| 5324 | CFRI | CRAFT RUG MILLS | | | SCAC4 |
| 5325 | CFRJ | CRITES FARMS | | | SCAC3 |
| 5326 | CFRK | COMFORT TRUCKING INC | | | SCAC3 |
| 5327 | CFRL | CENTRAL FREIGHTLINES LTD | | | SCAC4 |
| 5328 | CFRM | CHICAGO FREIGHT SYSTEMS, INC | | | SCAC3 |
| 5329 | CFRM | CHICAGO FREIGHT SYSTEMS INC | | | SCAC4 |
| 5330 | CFRM | CFR Marfa | | RO | TRAFFIC |
| 5331 | CFRO | CALIFORNIA RELOCATION SERVICES INC | | | SCAC3 |
| 5332 | CFRO | CALIFORNIA RELOCATION SERVICES INC | | | SCAC4 |
| 5333 | CFRP | CARE-FREE TRANSPORTAITON INC | | | SCAC3 |
| 5334 | CFRQ | CALIFORNIA FREIGHT LINES | | | SCAC3 |
| 5335 | CFRQ | CALIFORNIA FREIGHT LINES | | | SCAC4 |
| 5336 | CFRR | Chemin de fer Rivière Romaine | | | RSRV |
| 5337 | CFRR | CALIFORNIA REFRIGERATED EXPRESS | | | SCAC3 |
| 5338 | CFRS | CROUCH FREIGHT SYSTEMS INC | | | SCAC3 |
| 5339 | CFRS | CONVENTION FREIGHT SERVICES INC | | | SCAC4 |
| 5340 | CFRT | CONTAINERFREIGHT TRANSPORTATION COM | | | SCAC3 |
| 5341 | CFRT | CONTAINERFREIGHT EIT LLC | | | SCAC4 |
| 5342 | CFRU | CF&S RUSSIA LTD | | RUS | BIC |
| 5343 | CFRU | CARDINAL FREIGHT CARRIERS | | | PWRC |
| 5344 | CFRU | Cardinal Freight Carriers | | | RSRV |
| 5345 | CFRU | CARDINAL FREIGHT CARRIERS | | | SCAC3 |
| 5346 | CFRU | CARDINAL FREIGHT CARRIERS | | | SCAC4 |
| 5347 | CFRV | COMPLETE FREIGHT SERVICES LLC | | | SCAC4 |
| 5348 | CFRW | Caney Fork and Western R.R., Inc. | added 7/1984 | | NAKINA |
| 5349 | CFRW | Caney Fork and Western R.R., Inc. | added 7/84 | | NRHS |
| 5350 | CFRW | CONTACT FREIGHT SYSTEMS INC | | | SCAC3 |
| 5351 | CFRW | CRYSTAL FARMS RDC (LAKE MILLS DIVIS | | | SCAC4 |
| 5352 | CFRX | Chicago Freight Car Leasing Co. | added 4/1963; 7/1965-1/1980; eliminated 1/1983 | | NAKINA |
| 5353 | CFRX | Chicago Freight Car Co. | added 4/1959; 4/1961; eliminated 4/1963 | | NAKINA |
| 5354 | CFRX | Chicago Freight Car & Parts Co. | 1/1952-10/1957; eliminated 4/1959 | | NAKINA |
| 5355 | CFRX | Canfield Refining Co. | 8/1920-7/1923 | | NAKINA |
| 5356 | CFRX | Chicago Freight Car & Parts Co. | 1/52-10/57 | | NRHS |
| 5357 | CFRX | Chicago Freight Car Co. | Apr-61 | | NRHS |
| 5358 | CFRX | Chicago Freight Car Leasing Co. | 7/65-1/80; eliminated 1/83 | | NRHS |
| 5359 | CFRX | *CANFIELD REFINING CO. | | | PWRC |
| 5360 | CFRX | *CHICAGO FREIGHT CAR LEASING CO | | | PWRC |
| 5361 | CFRX | CHICAGO FREIGHT CAR LEASING CO | | | SCAC3 |
| 5362 | CFRY | CAFFRAY, TOM SERVICE | | | SCAC3 |
| 5363 | CFRY | COMERCIALIZADORA FREGOSO | | | SCAC4 |
| 5364 | CFS | Empire Airlines | IATA: EM, Callsign: Empire Air, IATA Prefix: 464, | USA | AVCODES |
| 5365 | CFS | Empire Airlines | IATA: EM | | ICAO1 |
| 5366 | CFS | | | SYR | TRAFFIC |
| 5367 | CFS | Administration Générale des Chemins de Fer Syriens | | SY | VKM |
| 5368 | CFSA | CALIFORNIA FREIGHT SALES | | | SCAC3 |
| 5369 | CFSA | CALIFORNIA FREIGHT SALES | | | SCAC4 |
| 5370 | CFSB | CARRIER FREIGHT SERVICES INC | | | SCAC3 |
| 5371 | CFSB | CFS | | | SCAC4 |
| 5372 | CFSC | CARI-FREIGHT SHIPPING CO INC | | | SCAC3 |
| 5373 | CFSC | COMERCIALIZADORA FUEL S A DE C V | | | SCAC4 |
| 5374 | CFSD | CALIFORNIA STEEL INDUSTRIES INC | | | SCAC3 |
| 5375 | CFSD | CALIFORNIA STEEL INDUSTRIES INC | | | SCAC4 |
| 5376 | CFSE | COURTESY FREIGHT SERVICE | | | SCAC3 |
| 5377 | CFSE | CHELTRO FREIGHT SYSTEMS | | | SCAC4 |
| 5378 | CFSE | Le Chemin de Fer de Saint-Eutrope | | F | TRAFFIC |
| 5379 | CFSG | CERTIFIED SAND & GRAVEL | | | SCAC3 |
| 5380 | CFSG | CONSOLIDATED FREIGHT SYSTEMS INC | | | SCAC4 |
| 5381 | CFSI | CLEMONS FIELD SERVICES INC | | | SCAC4 |
| 5382 | CFSJ | COPPERSTATE FREIGHT SYSTEMS INC | | | SCAC3 |
| 5383 | CFSK | CFS LOGISTICS AIR | | | SCAC4 |
| 5384 | CFSL | COUGAR FREIGHT SYSTEMS LTD (EASTERN | | | SCAC3 |
| 5385 | CFSL | CLASSIC FREIGHT SYSTEMS LTD | | | SCAC4 |
| 5386 | CFSM | COLONIAL FREIGHT SYSTEM INC | | | SCAC3 |
| 5387 | CFSN | CFS LOGISTICS INC | | | SCAC4 |
| 5388 | CFSNE | CFS-NE | | F | TRAFFIC |
| 5389 | CFSO | C F & SONS | | | SCAC3 |
| 5390 | CFSP | CENTRAL FREIGHT SPECIALISTS INC | | | SCAC3 |
| 5391 | CFSP | CONSOLIDATED FREIGHT SYSTEMS INC | | | SCAC4 |
| 5392 | CFSQ | COMPLETE FREIGHT SERVICE | | | SCAC3 |
| 5393 | CFSR | CONTROLLED FREIGHT SERVICES | | | SCAC3 |
| 5394 | CFSR | C F S T LLC | | | SCAC4 |
| 5395 | CFSS | CITYS FREIGHT SYSTEMS LTD | | | SCAC4 |
| 5396 | CFSU | CAPITOL FREIGHT SERVICE | | | SCAC3 |
| 5397 | CFSV | COMMERCIAL FREIGHT SERVICES INC | | | SCAC4 |
| 5398 | CFSW | CAREFREE SUPPLY | | | SCAC3 |
| 5399 | CFSX | C&T Refinery, Inc. | added 4/1980; 1/1994-7/2005 (not listed) | | NAKINA |
| 5400 | CFSX | C&F Refinery, Inc. | 1/1980 | | NAKINA |
