| 5101 | CFKP | CASCADE TURF & PERKINS PACIFIC & PA | | | SCAC4 |
| 5102 | CFKX | Chicago Freight Car Line | 7/1930-7/1932 | | NAKINA |
| 5103 | CFKX | CHICAGO FREIGHT CAR LINE | | | PWRC |
| 5104 | CFKZ | (XTRZ) XTRA INTERMODAL | | | PWRC |
| 5105 | CFKZ | XTRA Intermodal | | | RSRV |
| 5106 | CFKZ | XTRA INTERMODAL | | | SCAC4 |
| 5107 | CFL | Swedish Airlines | Callsign: Swedish, | S | AVCODES |
| 5108 | CFL | Consort Aviation | Callsign: Consort, | GB | AVCODES |
| 5109 | CFL | Bromma Air Maintenance AB | Callsign: Calibration, | S | AVCODES |
| 5110 | CFL | Swedish Airlines | | | ICAO1 |
| 5111 | CFL | CFL cargo Danmark ApS | 2007 - | DK | jernbanen.dk |
| 5112 | CFL | CF Lanaudiere Inc. | 7/2005 | | NAKINA |
| 5113 | CFL | CF LANAUDIERE INC. | | | PWRC |
| 5114 | CFL | Chemin de fer Lanaudière | | | RSRV |
| 5115 | CFL | CENTRAL FLORIDA LIMOUSINE INC | | | SCAC4 |
| 5116 | CFL | Luxemburg | | L | TRAFFIC |
| 5117 | CFL | Soc. Nat. des Chemins de Fer Luxembourgeois | | LU | VKM |
| 5118 | CFLA | CALIFORNIA LOS ANGELES EXPRESS INC | | | SCAC3 |
| 5119 | CFLA | CALIFORNIA LOS ANGELES EXPRESS INC | | | SCAC4 |
| 5120 | CFLB | CALIFORNIA FREIGHT LTD. | | | SCAC3 |
| 5121 | CFLB | COMERCIALIZADORA DE FRUTAS Y LEGUMB | | | SCAC4 |
| 5122 | CFLC | CORBIN FUEL CO INC | | | SCAC4 |
| 5123 | CFLC | CFL Cargo | | L | TRAFFIC |
| 5124 | CFLCA | CFL cargo | | LU | VKM |
| 5125 | CFLCD | CFL Cargo Danmark ApS | | DK | VKM |
| 5126 | CFLD | CSAL CANADA STATES AFRICA LINE INC | | | SCAC4 |
| 5127 | CFLD | CFL cargo Danmark ApS | Real: CFL, 2007 - | DK | TRAFFIC |
| 5128 | CFLDE | CFL cargo Deutschland | | DE | VKM |
| 5129 | CFLE | COLORADO FREIGHTLINES, INC | | | SCAC3 |
| 5130 | CFLH | CHARTER FREIGHT LINES INC | | | SCAC3 |
| 5131 | CFLH | CHAMPION FOODS LLC | | | SCAC4 |
| 5132 | CFLI | CARRIER FREIGHT LINES INC | | | SCAC3 |
| 5133 | CFLIF | CFL Gestion Infrastructure | | LU | VKM |
| 5134 | CFLIT | C.F.L.SPA | | I | TRAFFIC |
| 5135 | CFLJ | CONTINENTAL FREIGHT LINES INC | | | SCAC3 |
| 5136 | CFLL | CLASSIC FREIGHT LINES | | | SCAC4 |
| 5137 | CFLM | CHAUFFEURED LIMOUSINE SERVICE | | | SCAC3 |
| 5138 | CFLM | CRYSTAL FLASH ENERGY | | | SCAC4 |
| 5139 | CFLN | CONTINENTAL FRTLINS INC | | | SCAC3 |
| 5140 | CFLO | COMFORT LIMOUSINE SERVICE INC | | | SCAC3 |
| 5141 | CFLP | CENTRAL FLORIDA PIPELINE CORPORATIO | | | SCAC3 |
| 5142 | CFLP | CAMIONES Y FLETES PIEL ROJA SA DE C | | | SCAC4 |
| 5143 | CFLQ | CATALINA FREIGHT LINE | | | SCAC3 |
| 5144 | CFLQ | CFL TRANSPORTATION INC | | | SCAC4 |
| 5145 | CFLR | CONCEPT FREIGHT | | | SCAC4 |
| 5146 | CFLS | CARSTENSEN FREIGHT LINES, INC. | | | PWRC |
| 5147 | CFLS | CARSTENSEN FREIGHT LINES, INC. | | | SCAC3 |
| 5148 | CFLS | CANADIAN FLEET SERVICES | | | SCAC4 |
| 5149 | CFLT | CANADIAN FREIGHTWAYS LTD. | | | PWRC |
| 5150 | CFLT | C F L TRUCKING | | | SCAC3 |
| 5151 | CFLU | CRYOFLEET PTE LTD | | SGP | BIC |
| 5152 | CFLU | CONFLO LINES ORION MARINE | | | SCAC3 |
| 5153 | CFLU | B S G BAVARIA SEE-VERKEHRS GMBH | | | SCAC4 |
| 5154 | CFLV | CENTRAL FLORIDA VAN LINES INC | | | SCAC3 |
| 5155 | CFLV | C F | | | SCAC4 |
| 5156 | CFLW | CALIFORNIA TRANS LOADING NETWORK | | | SCAC3 |
| 5157 | CFLW | CONFLOW TECHNOLOGIES INC | | | SCAC4 |
| 5158 | CFLX | Crestbrook Forest Industries, Inc. (captive service) | 1/1994-7/2000 (not listed) | | NAKINA |
| 5159 | CFLX | Central Florida Lumber Co. | 8/1920-7/1923 | | NAKINA |
| 5160 | CFLX | Crestbrook Forest Industries, Inc. (captive service) | 1/94-7/2000 | | NRHS |
| 5161 | CFLX | *CENTRAL FLORIDA LUMBER CO. | | | PWRC |
| 5162 | CFLX | *CRESTBROOK FOREST INDUSTRIES, LTD.(CAPTIVE SERVICE) | | | PWRC |
| 5163 | CFLX | Crestbrook Forest Industries | | | RSRV |
| 5164 | CFLY | CFL-CONTAINER FREIGHT LOGISTICS LTD | | | SCAC4 |
| 5165 | CFM | ACEF | | | ICAO1 |
| 5166 | CFM | CHEMIN DE FER DE MATAPÉDIA ET DU GOLFE | | | PWRC |
| 5167 | CFM | Chemin de fer de Matapédia et du Golfe | | | RSRV |
| 5168 | CFM | Caile Ferate Moldova | | MD | TRAFFIC |
| 5169 | CFM | Caile Ferate Moldova | | MD | VKM |
| 5170 | CFMA | COMPTON, FLOYD MOTORS (FCM) AUTO TR | | | SCAC3 |
| 5171 | CFMC | CREATIVE FOAM CORP | | | SCAC3 |
| 5172 | CFMC | CF LOGISTICS LLC | | | SCAC4 |
| 5173 | CFMD | CHARIOTS OF FIRE MESSENGER & DELIVE | | | SCAC3 |
| 5174 | CFME | CAREFUL MOVERS | | | SCAC3 |
| 5175 | CFMF | CONSTANT FORWARD MOTION FABRICATION | | | SCAC4 |
| 5176 | CFMG | Canadian National Rys. | added 7/2009 | | NAKINA |
| 5177 | CFMG | Chemin De Fer De La Matapedia Et Du Golfe Inc. | 7/2005; eliminated 7/2009 | | NAKINA |
| 5178 | CFMG | CHEMIN DE FER DE LA MATAPÉDIA ET DU GOLFE, INC. | | | PWRC |
| 5179 | CFMG | Chemin de Fer de Matapédia et Gaspésie | | | RSRV |
| 5180 | CFMG | CERTIFIED MOVING INC | | | SCAC3 |
| 5181 | CFMG | CHEMIN DE FER DE LA | | | SCAC4 |
| 5182 | CFMH | CENTRAL FREIGHT MANAGEMENT LLC | | | SCAC4 |
| 5183 | CFMI | CATE FARMS INC | | | SCAC3 |
| 5184 | CFML | COLONIAL FLORISTS LTD | | | SCAC4 |
| 5185 | CFMLD | CONSTRUCTII FEROVIARE MOLDOVA SA | | RO | VKM |
| 5186 | CFMM | CALIFORNIA MULTIMODAL, INC | | | SCAC3 |
| 5187 | CFMM | CALIFORNIA MULTIMODAL LLC | | | SCAC4 |
| 5188 | CFMN | CFM LEASING INC | | | SCAC3 |
| 5189 | CFMN | COULTER FARMS TRUCKING INC | | | SCAC4 |
| 5190 | CFMO | CROFTER MOVING & STORAGE INC | | | SCAC3 |
| 5191 | CFMP | C-FOUR (C-4) MOTION INC | | | SCAC4 |
| 5192 | CFMQ | CERINI FARMS | | | SCAC3 |
| 5193 | CFMR | CREFORM CORPORATION | | | SCAC4 |
| 5194 | CFMS | C & F MOVING SERVICES INC | | | SCAC3 |
| 5195 | CFMT | CALIFORNIA TRANSPORT, California Mainbridge Transport, INC | | | SCAC3 |
| 5196 | CFMT | CALIFORNIA TRANSPORT | | | SCAC4 |
| 5197 | CFMU | STATE ENTERPRISE RAILWAYS OF MOLDOVA | | MD | BIC |
| 5198 | CFMU | CFM-EXPEDITIE | | | SCAC4 |
| 5199 | CFMUR | CEFMUR SA | | RO | VKM |
| 5200 | CFMV | CALIFORNIA MOVING & STORAGE CO | | | SCAC3 |
