| 4101 | FLYX | FRANK L. YOUNG CO. | | | PWRC |
| 4102 | FLZ | Aero Leasing d/b/a Air Florida Airlines / Air Florida | Callsign: Air Florida, Ceased operations. | USA | AVCODES |
| 4103 | FLZ | Flightlink Limited | IATA: YS, Callsign: Flightlink, | EAT | AVCODES |
| 4104 | FLZ | Air Florida | IATA: QH | | ICAO1 |
| 4105 | FLZ | FURMAN LUMBER | | | PWRC |
| 4106 | FLZM | FLETES LOZMAR S A DE C V | | | SCAC4 |
| 4107 | FLZR | FOLTZ, RICHARD D | | | SCAC3 |
| 4108 | FLZR | FLETES Y TRANSPORTES RUIZ SA DE CV | | | SCAC4 |
| 4109 | FLZT | FOLTZ TRUCKING INC | | | SCAC3 |
| 4110 | FLZU | FINE LINKS HOLDING LIMITED | | | SCAC4 |
| 4111 | FLZW | FOLTZ WELDING PIPE LINE MAINTENANCE | | | SCAC3 |
| 4112 | FM | Shanghai Airlines | ICAO: CSH, Callsign: Shanghai Air, IATA Prefix: 774, Name changed to Shanghai Airlines Co. Ltd. IATA designator changed from SF* | PRC | AVCODES |
| 4113 | FM | Flying Syndicate Twente | | NL | AVCODES |
| 4114 | FM | Shanghai Airlines Co. Ltd. | ICAO: CSH, Callsign: Shanghai Air, IATA Prefix: 774, Name changed from Shanghai Airlines. IATA designator changed from SF* | PRC | AVCODES |
| 4115 | FM | Commandement des Transports Aeriensd Militaires Francais | ICAO: FAF, Callsign: Cotam, | F | AVCODES |
| 4116 | FM | Commandement des Transports Aeriensd Militaires Francais | ICAO: FMT, Callsign: Foxtrot Mike, | F | AVCODES |
| 4117 | FM | Commandement des Transports Aeriensd Militaires Francais | ICAO: FMT, Callsign: Cotam, ICAO designator changed from FAF | F | AVCODES |
| 4118 | FM | FORD MUSEUM | | | PWRC |
| 4119 | FM | | | USA | TRAFFIC |
| 4120 | FMA | Foremost Aviation (Nig) Ltd. | Callsign: Foremost, | WAN | AVCODES |
| 4121 | FMA | Fumigacion Aerea Andaluza, S.A. | Callsign: Faasa, ICAO designator changed from FAM | E | AVCODES |
| 4122 | FMA | Chemin de fer Fribourg–Morat–Anet | | CH | TRAFFIC |
| 4123 | FMAD | FABRECO MOVING AND DRAYAGE | | | SCAC3 |
| 4124 | FMAH | FLEET MAINTENANCE AND REPAIR INC | | | SCAC4 |
| 4125 | FMAI | FRAMAUR ASSOCIATES LLC | | | SCAC4 |
| 4126 | FMAJ | FLETES MULTIPLES SA DE CV | | | SCAC4 |
| 4127 | FMAK | FERRY, MICHAEL TRUCKING | | | SCAC4 |
| 4128 | FMAM | FER & METAUX AMERICAINS S.E.C. /AME | | | SCAC4 |
| 4129 | FMAN | FORMAN SHIPPING CO LTD | | | SCAC4 |
| 4130 | FMAO | FLEET-MATE INC | | | SCAC3 |
| 4131 | FMAR | FEDMAR INTERNATIONAL | | | SCAC3 |
| 4132 | FMAT | FREDDIE MACS AUTO & TRUCK SERVICE | | | SCAC3 |
| 4133 | FMAV | FMT INC | | | SCAC4 |
| 4134 | FMAW | FOREWEST MARITIME | | | SCAC4 |
| 4135 | FMAY | F & M TRANSPORTATION | | | SCAC4 |
| 4136 | FMAZ | FROEDERT MALT | | | PWRC |
| 4137 | FMB | Flyawesome Holdings Limited | Callsign: Rescue Jet, Name changed to Flyawesome Limited. ICAO designator changed to MDW. ICAO Callsign changed to Medwing. | M | AVCODES |
| 4138 | FMBE | Five Mile Beach Electric Railway | | US-NJ | TRAFFIC |
| 4139 | FMBH | FRANK MOBILE HOME TRANSPORTING | | | SCAC3 |
| 4140 | FMBL | FOMBELLE, ROBERT L | | | SCAC3 |
| 4141 | FMBS | FERGUSONS CHARTER BUS INC | | | SCAC3 |
| 4142 | FMBT | FREDS MOBILE TRANSPORT | | | SCAC3 |
| 4143 | FMBU | P & O FERRYMASTERS LTD | | B | BIC |
| 4144 | FMBU | P & O FERRYMASTERS LTD | | | SCAC4 |
| 4145 | FMBV | F & M BUS-VAN CORP | | | SCAC3 |
| 4146 | FMBV | FAIRMOUNT MARINE B V | | | SCAC4 |
| 4147 | FMBW | FARMERS AND MERCHANTS BONDED WAREHO | | | SCAC3 |
| 4148 | FMC | Claessens International Ltd. | Callsign: Claessens, | GB | AVCODES |
| 4149 | FMC | Claessens International Limited | | | ICAO1 |
| 4150 | FMCC | FLAMCO INC | | | SCAC3 |
| 4151 | FMCC | FARM COUNTRY CO-OP | | | SCAC4 |
| 4152 | FMCE | FARM-CITY TRANSPORT INC | | | SCAC3 |
| 4153 | FMCF | FILSON MANUFACTURING COMPANY INC | | | SCAC4 |
| 4154 | FMCL | FATHOM MARINE COMPANY LIMITED | | | SCAC3 |
| 4155 | FMCM | FM CARRIERS INC. | | | SCAC4 |
| 4156 | FMCN | FARAH MANUFACTURING CO INC | | | SCAC3 |
| 4157 | FMCN | FARMLAND COOP INC | | | SCAC4 |
| 4158 | FMCP | FAMCO TRANSPORT INC | | | SCAC3 |
| 4159 | FMCP | FARMERS COOPERATIVE | | | SCAC4 |
| 4160 | FMCQ | FOXMORE COMPANY LIMITED | | | SCAC3 |
| 4161 | FMCQ | FRM MAIL CONTRACTING INC | | | SCAC4 |
| 4162 | FMCR | FREEMAN CONSTRUCTION | | | SCAC4 |
| 4163 | FMCS | FANTASY MOTOR COACHES INC | | | SCAC3 |
| 4164 | FMCU | FARMAD COMPANY LIMITED | | IR | BIC |
| 4165 | FMCU | FMC CORPORATION | | | PWRC |
| 4166 | FMCU | FMC Corporation (Industrial Chemical Group) | | | RSRV |
| 4167 | FMCU | FMC CORP. INDUSTRIAL CHEMICAL | | | SCAC3 |
| 4168 | FMCU | FMC CORPORATION INDUSTRIAL CHEMICAL | | | SCAC4 |
| 4169 | FMCV | FREITAS MOVING & CARTAGE LTD | | | SCAC4 |
| 4170 | FMCW | FETTES MANUFACTURING COMPANY INC | | | SCAC4 |
| 4171 | FMCX | First Mississippi Corp. | added 1/1972; 1/1975; eliminated 10/1977 | | NAKINA |
| 4172 | FMCX | Transerv Systems, Inc. | added 1/1970; 4/1970; eliminated 1/1972 | | NAKINA |
| 4173 | FMCX | First Mississippi Corp. | added 10/1958; 4/1961-10/1966; eliminated 1/1970 | | NAKINA |
| 4174 | FMCX | First Mississippi Corp. | added 10/58; 4/61-10/66; eliminated 1/70 | | NRHS |
| 4175 | FMCX | Transerv Systems, Inc. | added 1/70; 4/70; eliminated 1/72 | | NRHS |
| 4176 | FMCX | First Mississippi Corp. | added 1/72; 1/75 | | NRHS |
| 4177 | FMCX | FIRST MISSISSIPPI CORP. (TRANSERV SYSTEMS, INC.) | | | PWRC |
| 4178 | FMCY | FOUR M COMPANY (4M COMPANY) | | | SCAC3 |
| 4179 | FMCY | FMC INDUSTRIES LLC | | | SCAC4 |
| 4180 | FMCZ | FORD MOTOR COMPANY | | | PWRC |
| 4181 | FMDA | FOREMOST DAIRIES INC | | | SCAC3 |
| 4182 | FMDC | FULLER MOTOR DELIVERY CO | | | SCAC3 |
| 4183 | FMDD | FMD DISTRIBUTION | | | SCAC4 |
| 4184 | FMDE | FORTEC MEDICAL LLC | | | SCAC4 |
| 4185 | FMDQ | FAST MAN DELIVERY | | | SCAC3 |
| 4186 | FMDQ | FARM EQUIPMENT FINDING SERVICE | | | SCAC4 |
| 4187 | FMDT | FMD TRANSPORTATION | | | SCAC4 |
| 4188 | FMDU | VAN UDEN LOGISTICS BV | | | SCAC4 |
| 4189 | FMDV | FRANCIS MEDITERRANEAN BAKERY | | | SCAC4 |
| 4190 | FME | Fränkische Museums Eisenbahn e.V. | Nürnberg | D | privat-bahn.de |
| 4191 | FME | Fränkische Museums-Eisenbahn e.V | | DE | VKM |
| 4192 | FMEA | FINAL MILE, THE | | | SCAC4 |
| 4193 | FMEB | FME BROKERAGE | | | SCAC4 |
| 4194 | FMEC | FREDRICKSON MOTOR EXPRESS CORPORATION | | | SCAC3 |
| 4195 | FMEC | FARMERS EQUIPMENT CO | | | SCAC4 |
| 4196 | FMED | FARM EXPORT DELIVERY SERVICE INC | | | SCAC3 |
| 4197 | FMEM | FOUR (4) M EXPRESS | | | SCAC4 |
| 4198 | FMEN | FILLMORE EXPRESS INC | | | SCAC4 |
| 4199 | FMEO | FLAME ON TRUCKING | | | SCAC3 |
| 4200 | FMEP | FILM EXPRESS OF NEW ENGLAND | | | SCAC3 |
