| 5401 | CFSX | C.F. Simonin's Sons, Inc. | 7/1930-7/1935 | | NAKINA |
| 5402 | CFSX | C&F Refinery, Inc. | Jan-80 | | NRHS |
| 5403 | CFSX | C&T Refinery, Inc. | added 4/80; 1/94-7/2000 | | NRHS |
| 5404 | CFSX | *C. F. SIMONIN'S SONS, INC. | | | PWRC |
| 5405 | CFSX | *C & T REFINERY, INC | | | PWRC |
| 5406 | CFSX | C and T Refinery | | | RSRV |
| 5407 | CFSX | CANADIAN FOOD PRODUCTS SALES LTD | | | SCAC3 |
| 5408 | CFSY | COAST FREIGHT SYSTEM INC | | | SCAC3 |
| 5409 | CFSZ | CROP FERTILITY SPECIALISTS, INC. | | | PWRC |
| 5410 | CFT | Jet Freighters, Inc. | Callsign: Casper Freight, | USA | AVCODES |
| 5411 | CFT | Jet Freighters | | | ICAO1 |
| 5412 | CFT | Čechofracht a.s. | | CZ | VKM |
| 5413 | CFTA | Société Génerale de Chemin de Fer et de Transports Automobiles | | F | TRAFFIC |
| 5414 | CFTA | Société Génerale de Chemin de Fer et de Transports Automobiles (CFTA) | | FR | VKM |
| 5415 | CFTB | CROFT CO | | | SCAC3 |
| 5416 | CFTB | CHIM-FLEX TUBING INC | | | SCAC4 |
| 5417 | CFTC | CRAWFORD TRANSFER CO INC | | | SCAC3 |
| 5418 | CFTD | CONTINENTAL FREIGHT TRANSPORT CO | | | SCAC4 |
| 5419 | CFTE | CALFRAMAX TECHNOLOGIES INC | | | SCAC4 |
| 5420 | CFTG | C F TRUCKING INC | | | SCAC4 |
| 5421 | CFTH | CARETRANS FREIGHT SERVICE INC | | | SCAC4 |
| 5422 | CFTI | CLIFTON MOVING & STORAGE INC | | | SCAC3 |
| 5423 | CFTJ | CALDWELL FARM TRUCKING INC | | | SCAC4 |
| 5424 | CFTK | C FOUR (4) TRUCKING OF NC INC | | | SCAC4 |
| 5425 | CFTM | CALIFORNIA TERMINAL CO | | | SCAC3 |
| 5426 | CFTN | CERTIFIED TRANSPORTATION GROUP INC | | | SCAC4 |
| 5427 | CFTO | CAREFREE TRUCKING INC | | | SCAC3 |
| 5428 | CFTP | CLIFFORD TRANSPORTATION SERVICES IN | | | SCAC3 |
| 5429 | CFTP | CERTIFIED TRANSPORT CORP | | | SCAC4 |
| 5430 | CFTQ | COMMERCIAL FREIGHT CO | | | SCAC3 |
| 5431 | CFTR | CURTIS FARMS TRUCKING LTD | | | SCAC4 |
| 5432 | CFTS | CALORE FREIGHT SYSTEM | | | SCAC3 |
| 5433 | CFTT | CHELMSFORD FUEL TRANSPORTATION CO | | | SCAC3 |
| 5434 | CFTU | CARGOFRESH TECHNOLOGIES GMBH | | | SCAC4 |
| 5435 | CFTV | CRANFORD TRANSPORTATION SERVICE INC | | | SCAC4 |
| 5436 | CFTW | CONFEDERATED TRANSPORTATION COMPANY | | | SCAC3 |
| 5437 | CFTW | CENTURY FREIGHTWORX LTD | | | SCAC4 |
| 5438 | CFTX | Canadian Fertilizers Ltd. | 7/2000-7/2005 (not listed) | | NAKINA |
| 5439 | CFTX | Canadian Fertilizers Ltd. | Jul-00 | | NRHS |
| 5440 | CFTX | CANADIAN FERTILIZERS LIMITED | | | PWRC |
| 5441 | CFTX | Canadian Fertilizers | | | RSRV |
| 5442 | CFTX | CANADIAN FERTILIZERS LIMITED | | | SCAC4 |
| 5443 | CFU | CAA Flying Unit | Callsign: Minair, Designator MC recalled by IATA | GB | AVCODES |
| 5444 | CFU | Civil Aviation Authority Flying Unit | IATA: MC, Callsign: Minair, Designator MC recalled by IATA | GB | AVCODES |
| 5445 | CFU | United Kingdom Civil Aviation Authority | | | ICAO1 |
| 5446 | CFUE | CONTINENTAL FUEL TRANSPORTATION | | | SCAC3 |
| 5447 | CFUE | CONTINENTAL FUEL TRANSPORTATION | | | SCAC4 |
| 5448 | CFUI | COOL FUEL INCORPORATED | | | SCAC3 |
| 5449 | CFUL | COMMERCIAL FUEL SYSTEMS | | | SCAC4 |
| 5450 | CFUM | CHAPPLE FUELS LIMITED | | | SCAC4 |
| 5451 | CFUN | CROFTON CONSTRUCTION SERVICES INC | | | SCAC4 |
| 5452 | CFUO | CONSOLIDATED FUEL CO | | | SCAC3 |
| 5453 | CFUR | CARRIER FURNITURE SYSTEM CORP | | | SCAC3 |
| 5454 | CFUS | CROFUTT & SMITH MOVING & STORAGE IN | | | SCAC3 |
| 5455 | CFUT | CHARTERHALL FURNITURE | | | SCAC4 |
| 5456 | CFUU | CF TRUCKLOAD SERVICE, INC | | | SCAC3 |
| 5457 | CFUY | CHAMPLAIN FURNITURE | | | SCAC4 |
| 5458 | CFV | Aero Calafia, S.A. de C.V. t/a Calafia Airlines | IATA: A7, Callsign: Calafia, | MEX | AVCODES |
| 5459 | CFV | Aero Calafia | | | ICAO1 |
| 5460 | CFVA | CAPITOL FOUNDRY | | | SCAC4 |
| 5461 | CFVB | CENTRAL REFRIGERATED SERVICE INC (B | | | SCAC4 |
| 5462 | CFVI | CAREFREE TRAVEL INC | | | SCAC3 |
| 5463 | CFVL | CONFEDERATE VAN LINES LLC | | | SCAC4 |
| 5464 | CFVQ | CAPITAL FREIGHT SERVICES INC | | | SCAC4 |
| 5465 | CFVR | CTL FREIGHT SERVICE | | | SCAC4 |
| 5466 | CFVS | COASTLINE FREIGHT SYSTEMS | | | SCAC3 |
| 5467 | CFVX | C.F. Vissman Co., Inc. | 4/1938 | | NAKINA |
| 5468 | CFVX | C.F. Vissman & Co. | Apr-38 | | NRHS |
| 5469 | CFVX | C. F. VISSMAN CO., INC. | | | PWRC |
| 5470 | CFW | CITY OF FT. WORTH | | | PWRC |
| 5471 | CFWA | CAROLINA FREIGHTWAYS INC | | | SCAC3 |
| 5472 | CFWA | CAROLINA FREIGHTWAYS INC | | | SCAC4 |
| 5473 | CFWC | CALIFORNIA FLOWER CO INC | | | SCAC3 |
| 5474 | CFWD | COTTRELL FORWARDING CO LTD | | | SCAC3 |
| 5475 | CFWE | CORD FORWARDERS | | | SCAC3 |
| 5476 | CFWE | CALFRAC WELL SERVICES LTD | | | SCAC4 |
| 5477 | CFWG | CUSTOM FORWARDING INC | | | SCAC3 |
| 5478 | CFWH | COLONIAL FREIGHT WAREHOUSE CO | | | SCAC3 |
| 5479 | CFWH | COLONIAL FREIGHT WAREHOUSE CO | | | SCAC4 |
| 5480 | CFWI | COLELLA FREIGHTWAYS INC | | | SCAC3 |
| 5481 | CFWI | CALIFORNIA WINE TRANSPORT INC | | | SCAC4 |
| 5482 | CFWL | CANADIAN FREIGHTWAYS LIMITED | | | SCAC3 |
| 5483 | CFWL | CANADIAN FREIGHTWAYS (DIV OF 418639 | | | SCAC4 |
| 5484 | CFWN | CASH FLOW LINE LLC | | | SCAC4 |
| 5485 | CFWO | CROSSFLOW AERO | | | SCAC4 |
| 5486 | CFWQ | CAROLINA FREIGHTWAYS INC | | | SCAC3 |
| 5487 | CFWR | The Caney Fork and Western R.R. | added 1/1986; eliminated 4/1987; 1/1994-7/2005 | | NAKINA |
| 5488 | CFWR | The Caney Fork and Western R.R. | added 1/86; eliminated 4/87; 1/94-7/2000 | | NRHS |
| 5489 | CFWR | CANEY FORK & WESTERN RAILROAD | | | PWRC |
| 5490 | CFWR | Caney Fork and Western Railway | | | RSRV |
| 5491 | CFWR | CANEY FORK AND WESTERN RR | | | SCAC3 |
| 5492 | CFWS | CARGAMERICAS FORWARDING SERVICES IN | | | SCAC3 |
| 5493 | CFWY | CONSOLIDATED FREIGHTWAYS | | | PWRC |
| 5494 | CFWY | CONSOLIDATED FREIGHTWAYS CORPORATION OF DELAWARE | | | SCAC3 |
| 5495 | CFWY | CONSOLIDATED FREIGHTWAYS | | | SCAC4 |
| 5496 | CFWY | Consolidated Freightways | | USA | TRAFFIC |
| 5497 | CFWZ | CONSOLIDATED FREIGHTWAYS | | | PWRC |
| 5498 | CFX | Cfa Air Charters (Pty) Ltd | Callsign: Ceefa Charter, | ZA | AVCODES |
| 5499 | CFXE | CALIFORNIA EXPRESS | | | SCAC4 |
| 5500 | CFXG | CERTIFIED TRANSPORTATION GROUP | | | SCAC4 |
