| 5001 | FONG | FOUR (4) ON THE GO SA DE CV | | | SCAC4 |
| 5002 | FONL | FORTY ONE (41) NORTH LOGISTICS LLC | | | SCAC4 |
| 5003 | FONO | FORTUNATO INC | | | SCAC4 |
| 5004 | FONQ | FONTAINE SHIPPING CORP | | | SCAC3 |
| 5005 | FONR | FONAR CORPORATION | | | SCAC3 |
| 5006 | FONS | FORD-SHELLHOUSE MOVING & STORAGE CO | | | SCAC3 |
| 5007 | FONT | FONTANA TRANSPORT | | | SCAC4 |
| 5008 | FONX | FONDERIA SA DE CV | | | SCAC4 |
| 5009 | FOO | Anisec Luftfahrt GmbH t/a Vueling Austria | IATA: VK, Callsign: Austrojet, Name changed to Anisec Luftfahrt GmbH t/a LEVEL Europe. | A | AVCODES |
| 5010 | FOO | Anisec Luftfahrt GmbH t/a LEVEL Europe | IATA: VK, Callsign: Austrojet, Ceased operation on 18 June 2020. Name changed from Anisec Luftfahrt GmbH t/a Vueling Austria. | A | AVCODES |
| 5011 | FOOC | FOOTE CONSTRUCTION CO | | | SCAC3 |
| 5012 | FOOD | FOOD PRODUCTS REFRIGERATED EXPRESS | | | SCAC3 |
| 5013 | FOOE | FOOD EXPRESS INC | | | SCAC3 |
| 5014 | FOOH | FOOD HAULERS INC | | | SCAC3 |
| 5015 | FOOI | FALCON OIL COMPANY INC | | | SCAC4 |
| 5016 | FOON | FOOD TRANSPORT INC | | | SCAC3 |
| 5017 | FOOP | FOOD PRODUCTS TRANSPORT | | | SCAC3 |
| 5018 | FOOR | FOOTNER & COMPANY INC. | | | SCAC3 |
| 5019 | FOOS | FOOSE TRANSPORT INC | | | SCAC3 |
| 5020 | FOOS | FOOSE TRANSPORT INC | | | SCAC4 |
| 5021 | FOOT | FOOTS PROPERTIES INC | | | SCAC3 |
| 5022 | FOOT | FOOTING TUBE, THE | | | SCAC4 |
| 5023 | FOOTHILL | Foothill Transit | | US-CA | TRAFFIC |
| 5024 | FOOU | FOODSPED GMBH | | A | BIC |
| 5025 | FOOZ | FLEXI-VAN LEASING INC | | | SCAC4 |
| 5026 | FOP | Fokker Flight Operations | | NL | AVCODES |
| 5027 | FOP | Fokker | | | ICAO1 |
| 5028 | FOPC | FORMOSA PLASTICS CORP. | | | PWRC |
| 5029 | FOPD | FOURTH PRODUCTS TANKERS, INC. | | | SCAC3 |
| 5030 | FOPD | FOURTH PRODUCTS TANKERS, INC. | | | SCAC4 |
| 5031 | FOPE | FOOD PRODUCTS EXPRESS (DIV OF JONES | | | SCAC3 |
| 5032 | FOPI | FORTIS PROPERTIES INC | | | SCAC4 |
| 5033 | FOPJ | FOSTER, PEGGY JO | | | SCAC3 |
| 5034 | FOPM | FOREST PARK & MAIN STREET WRECKERS | | | SCAC3 |
| 5035 | FOPR | FRIENDS OF THE POOR | | | SCAC4 |
| 5036 | FOPS | FORMOSA PLASTICS SHIPPING CORPORATI | | | SCAC3 |
| 5037 | FOPZ | FORMOSA PLANT | | | PWRC |
| 5038 | FOR | Formula One Management Limited | Callsign: Formula, | GB | AVCODES |
| 5039 | FOR | Formula One Management | | | ICAO1 |
| 5040 | FOR | Fore River R.R. Corp. | 1/1975-1/1980 | | NAKINA |
| 5041 | FOR | Fore River R.R. Corp. | 1/75-1/80 | | NRHS |
| 5042 | FOR | FORE RIVER RAILROAD CORP. | | | PWRC |
| 5043 | FOR | Fore River Railroad | | | RSRV |
| 5044 | FORA | FOUR A AIR FREIGHT CORPORATION (4-A | | | SCAC3 |
| 5045 | FORA | FORZA TRADING & SUPPLY DE MEXICO S | | | SCAC4 |
| 5046 | FORB | FORBES TRANSFER COMPANY, INC | | | SCAC3 |
| 5047 | FORBUS | Prywatna Komunikacja Miejska ForBus, sp. z o.o. | City: Bydgoszcz | PL | TRAFFIC |
| 5048 | FORC | FORDICE TRUCKING | | | SCAC3 |
| 5049 | FORD | FORDS FUEL SERVICE INC | | | SCAC4 |
| 5050 | FORD | Ford | | D | TRAFFIC |
| 5051 | FORE | FORE WAY EXPRESS INC | | | SCAC3 |
| 5052 | FORE | FORE WAY EXPRESS INC | | | SCAC4 |
| 5053 | FORF | FOREST FARM EQUIP LTD | | | SCAC4 |
| 5054 | FORH | FORD, WILLIAM M | | | SCAC3 |
| 5055 | FORI | FORT TRANSPORT | | | SCAC3 |
| 5056 | FORII | Föreningen Förstlingen II | | SE | VKM |
| 5057 | FORK | FORAKER OIL INC | | | SCAC4 |
| 5058 | FORM | FOREMAN, H S INC | | | SCAC3 |
| 5059 | FORM | FOREMAN, H S INC | | | SCAC4 |
| 5060 | FORN | FOURNIER TRANSPORT LTD | | | SCAC3 |
| 5061 | FORN | FOURNIER TRANSPORT LTD | | | SCAC4 |
| 5062 | FORO | FORD TRANSPORTATION SERVICES LIMITE | | | SCAC4 |
| 5063 | FORP | FORE, PAT TRUCK LINES INC | | | SCAC4 |
| 5064 | FORQ | FORD OIL COMPANY INC | | | SCAC4 |
| 5065 | FORR | FOREST HILLS TRANSFER & STORAGE INC | | | SCAC3 |
| 5066 | FORR | FOREST HILLS TRANSFER & STORAGE INC | | | SCAC4 |
| 5067 | FORS | FOUR SEASONS TRUCKING INC | | | SCAC3 |
| 5068 | FORT | FORTRANS INC | | | SCAC4 |
| 5069 | FORU | TRANS DISTANCE LINE LTD | | HK | BIC |
| 5070 | FORU | FORSTER TOWING | | | SCAC3 |
| 5071 | FORU | FORSTER TOWING | | | SCAC4 |
| 5072 | FORV | FOREVER TRUCKING INC | | | SCAC4 |
| 5073 | FORW | FOUR WAY TRANSPORTATION (FOUR-WAY T | | | SCAC3 |
| 5074 | FORW | FORT TRANSPORT LTD | | | SCAC4 |
| 5075 | FORZ | FLEXI-VAN LEASING, INC. | | | PWRC |
| 5076 | FORZ | Flexi-Van Leasing | | | RSRV |
| 5077 | FORZ | FLEXI-VAN LEASING INC | | | SCAC4 |
| 5078 | FOS | Formosa Airlines | Designator HU recalled by IATA | RC | AVCODES |
| 5079 | FOS | Formosa Airlines Corp. | IATA: HU, Designator HU recalled by IATA. Formerly Yung Shing Airlines | RC | AVCODES |
| 5080 | FOS | Bel Ltd | | RUS | AVCODES |
| 5081 | FOS | Formosa Airlines | IATA: VY | | ICAO1 |
| 5082 | FOS | Bel Limited | | | ICAO1 |
| 5083 | FOSA | FIVE O SEVEN ANTIQUES | | | SCAC4 |
| 5084 | FOSB | FOUR SEASONS BUS TOURS | | | SCAC3 |
| 5085 | FOSB | FOUR SEASONS BEER DISTRIBUTION INC | | | SCAC4 |
| 5086 | FOSC | FOSTER VAN LINES INC | | | SCAC3 |
| 5087 | FOSC | FOSTER VAN LINES INC | | | SCAC4 |
| 5088 | FOSD | FOSTER DRAYAGE COMPANY | | | SCAC3 |
| 5089 | FOSE | FOSTER, LLOYD | | | SCAC3 |
| 5090 | FOSE | FOUR SEASONS TRANSPORT & LEASING IN | | | SCAC4 |
| 5091 | FOSF | FORSTER FREIGHT FORWARDERS INC | | | SCAC3 |
| 5092 | FOSFA | Fosfa akciová společnost | | CZ | VKM |
| 5093 | FOSG | FOSS, G A TRANSPORT LTD | | | SCAC4 |
| 5094 | FOSH | FOSMO, HAROLD D | | | SCAC3 |
| 5095 | FOSI | FAST OCEAN EXPRESS INC | | | SCAC4 |
| 5096 | FOSJ | FERRI OIL SERVICE | | | SCAC4 |
| 5097 | FOSK | FOSHEE TRUCKING INC | | | SCAC3 |
| 5098 | FOSK | FOSHEE TRUCKING INC | | | SCAC4 |
| 5099 | FOSL | FOUR STAR LEASING INC | | | SCAC3 |
| 5100 | FOSM | FOSTER-GARDNER INC | | | SCAC3 |
