| 1 | FU | Air Littoral | ICAO: LIT, | F | AVCODES |
| 2 | FU | Air Littoral | ICAO: LIT, Callsign: Air Littoral, IATA Prefix: 659, Ceased operations in February 2004. | F | AVCODES |
| 3 | FU | Fuzhou Airlines Co., Ltd. | ICAO: FZA, Callsign: Strait Air, | PRC | AVCODES |
| 4 | FUA | Compania Hispano Irlanhesa de Aviacion d/b/a Futura Internacional | IATA: FH, Callsign: Futura, Name changed to Futura International Airways | E | AVCODES |
| 5 | FUA | Futura International Airways | IATA: FH, Callsign: Futura, Ceased operations on 07 September 2008. Name changed from Compania Hispano Irlanhesa de Aviacion d/b/a Futura Internacional | E | AVCODES |
| 6 | FUA | Futura International Airways | IATA: FH | | ICAO1 |
| 7 | FUA | Futura International Airways | | E | TRAFFIC |
| 8 | FUAH | FULTON, ARTHUR H | | | SCAC3 |
| 9 | FUAO | FULTON TRUCKING CO INC | | | SCAC3 |
| 10 | FUAT | FUA TRUCKING CO | | | SCAC3 |
| 11 | FUBK | FULBROOK MARITIME CORP | | | SCAC3 |
| 12 | FUBO | FURNITURE MANUFACTURING EXPRESS INC | | | SCAC3 |
| 13 | FUBO | FARMERS UNION OIL | | | SCAC4 |
| 14 | FUBS | FUNBUSES INC | | | SCAC3 |
| 15 | FUBS | FERDYNUS INC | | | SCAC4 |
| 16 | FUC | Fumicar | Callsign: Fumicar, | EC | AVCODES |
| 17 | FUC | Societa Ferrovie Udine-Cividale | | I | TRAFFIC |
| 18 | FUC | Società Ferrovie Udine Cividale | | IT | VKM |
| 19 | FUCA | FARMERS UNION COOPERATIVE BUSINESS | | | SCAC4 |
| 20 | FUCB | FUCHS LUBRICANTS | | | SCAC4 |
| 21 | FUCC | FUCCY HAULING & EXCAVATING, INC | | | SCAC3 |
| 22 | FUCH | FUCHS INC | | | SCAC3 |
| 23 | FUCH | FUCHS | | | SCAC4 |
| 24 | FUCHS | Fuchs Europe Schmierstoffe GmbH | | DE | VKM |
| 25 | FUCL | FUCILLO INC | | | SCAC3 |
| 26 | FUCR | FARMERS UNION COOP-SUPPLY CO INC | | | SCAC4 |
| 27 | FUCS | FUCHS, THOMAS L | | | SCAC3 |
| 28 | FUCU | SHINKO PANTEC CO., LTD. | | | PWRC |
| 29 | FUCU | Shinko Pantec | | | RSRV |
| 30 | FUCY | FURNITURE CITY TRUCK STOP | | | SCAC3 |
| 31 | FUCY | FORTUNE PLASTIC & METAL INC | | | SCAC4 |
| 32 | FUDG | FUDGE TRUCKING | | | SCAC3 |
| 33 | FUDI | FURNITURE DELIVERY INC | | | SCAC3 |
| 34 | FUDP | FLUID TRANSPORT | | | SCAC4 |
| 35 | FUDT | FULMER, DONALD TRUCKING | | | SCAC3 |
| 36 | FUDU | SPEEDSPACE FACTORY BUILT ACCOMODATION PTY LTD | | ZA | BIC |
| 37 | FUDW | FURMAN & DAWES INC | | | SCAC3 |
| 38 | FUE | Aviastar | Callsign: Aviastar-Volga, | RUS | AVCODES |
| 39 | FUE | FARMERS UNION ELEVATOR | | | PWRC |
| 40 | FUEA | FUEL MAN, THE | | | SCAC4 |
| 41 | FUEC | FUEL CENTER PLUS INC | | | SCAC4 |
| 42 | FUEL | FUEL CARRIERS INC | | | SCAC3 |
| 43 | FUEL | FUEL SERVICES INC | | | SCAC4 |
| 44 | FUEP | FUELS AND SUPPLIES | | | SCAC4 |
| 45 | FUEQ | FUEL OIL TRUCKING | | | SCAC3 |
| 46 | FUEQ | FUEL TRUCK INC | | | SCAC4 |
| 47 | FUER | FUEL TRANSPORT | | | SCAC4 |
| 48 | FUES | FUEL SOUTH EXPRESS INC | | | SCAC4 |
| 49 | FUF | Servicios Aereos Fun Fly, S.A. De C.V. | | MEX | AVCODES |
| 50 | FUFD | FULLER, FRED OIL COMPANY | | | SCAC4 |
| 51 | FUFH | FUHRMANN, FRED L | | | SCAC3 |
| 52 | FUFR | FUTURE FREIGHT SYSTEMS INC | | | SCAC3 |
| 53 | FUGA | FUGATE MOVERS | | | SCAC3 |
| 54 | FUGA | F U G | | | SCAC4 |
| 55 | FUGL | FRUGAL LOGISTICS INC | | | SCAC4 |
| 56 | FUGT | FUGATE TRUCKING | | | SCAC3 |
| 57 | FUGU | FUGRO NETHERLANDS MARINE B.V. | | NL | BIC |
| 58 | FUH | Jilin First International Aviation Academy Co., Ltd. | Callsign: Gallant, | PRC | AVCODES |
| 59 | FUIO | FARMERS UNION OIL CO | | | SCAC4 |
| 60 | FUIS | FIRST UNITED SHIPPING CORPORATION | | | SCAC3 |
| 61 | FUJ | Fujairah Aviation Centre | Callsign: Fujairah, | UAE | AVCODES |
| 62 | FUJ | Fujairah Aviation Centre | | | ICAO1 |
| 63 | FUJI | Fujikyu (Fuji Kyuko) Railway | | J | TRAFFIC |
| 64 | FUJIKYU | Fuji Kyuko | | J | TRAFFIC |
| 65 | FUJIMIN | Fuji Minobu Railway | 1912 - 1938 | J | TRAFFIC |
| 66 | FUJM | FUGATE, JAMES M | | | SCAC3 |
| 67 | FUJU | FUJIFILM ELECTRONIC MATERIALS (EUROPE) N.V. | | B | BIC |
| 68 | FUJU | FUJIFILM ELECTRONIC MATERIALS (EURO | | | SCAC4 |
| 69 | FUK | Keifuku Electric Railroad | | J | TRAFFIC |
| 70 | FUKC | Fukuoka City Transportation Bureau | City: Fukuoka | J | TRAFFIC |
| 71 | FUKJ | FUKUJIN KISEN CO LTD | | | SCAC4 |
| 72 | FUKS | Fukushima Transportation | | J | TRAFFIC |
| 73 | FUKU | TRADECORP INTERNATIONAL PTY LTD. | | AUS | BIC |
| 74 | FUKU | TRADECORP INTERNATIONAL PTY LTD | | | SCAC4 |
| 75 | FUKU | Fukushuwan | | J | TRAFFIC |
| 76 | FUKUI | Fukui Railway | | J | TRAFFIC |
| 77 | FUL | Five Forty Uganda Limited | Callsign: Orange Crane, | EAU | AVCODES |
| 78 | FULA | FREIGHT USA LLC | | | SCAC4 |
| 79 | FULB | FULMER BROTHERS INC | | | SCAC3 |
| 80 | FULB | FULMER BROTHERS INC | | | SCAC4 |
| 81 | FULC | FULL CIRCLE CARRIERS INC | | | SCAC3 |
| 82 | FULC | FULL CIRCLE CARRIERS INC | | | SCAC4 |
| 83 | FULE | FUCHS, LEON | | | SCAC3 |
| 84 | FULF | FULFORD VAN & STORAGE CO INC | | | SCAC3 |
| 85 | FULG | FLEET GLOBAL SERVICES INC | | | SCAC4 |
| 86 | FULH | FULTON HAULING CORP | | | SCAC3 |
| 87 | FULI | FULTRAN INC | | | SCAC3 |
| 88 | FULL | FULL THROTTLE EXPRESS | | | SCAC4 |
| 89 | FULM | FULTON MOVING & STORAGE INC | | | SCAC3 |
| 90 | FULM | FULSOM TRANSPORT LTD | | | SCAC4 |
| 91 | FULN | FULTON JONES | | | SCAC3 |
| 92 | FULQ | FUEL OIL SERVICE CO | | | SCAC3 |
| 93 | FULR | FULLER TRANSFER COMPANY | | | SCAC3 |
| 94 | FULR | FULLMER, DARYL | | | SCAC4 |
| 95 | FULS | FULLTIME SERVICE INC | | | SCAC4 |
| 96 | FULV | FULLERS VAN & STORAGE INC | | | SCAC3 |
| 97 | FULY | FED UP LLC | | | SCAC4 |
| 98 | FUM | Fuxion Line Mexico, S.A. De C.V. | Callsign: Funline, | MEX | AVCODES |
| 99 | FUN | Funtshi Aviation Service | IATA: FY, Callsign: Funtshi, ICAO designator assigned. ICAO callsign changed from Foxtrot Yankee. | ZAR | AVCODES |
| 100 | FUN | Funtshi Aviation Service | Callsign: Funtshi, Designator FY recalled by IATA. ICAO callsign changed from Foxtrot Yankee. | ZRE | AVCODES |
