| 1 | FN | Regional Air Lines | ICAO: RGL, Callsign: Maroc Regional, IATA Prefix: 259, | MA | AVCODES |
| 2 | FN | TEA France | ICAO: TFR, Callsign: Transairways, Ceased operations on 27 September 1991. | F | AVCODES |
| 3 | FN | Falcon Jet Centre | ICAO: FJC, Callsign: Falconjet, Designator FN recalled by IATA | GB | AVCODES |
| 4 | FN | Flota Aerea Nicaraguense, S.A. | Callsign: Fansa, | NIC | AVCODES |
| 5 | FN | Fly 540 Tanzania Ltd | ICAO: FTZ, Callsign: Grey Bird, Name changed to Fastjet Airlines Limited. | EAT | AVCODES |
| 6 | FN | fastjet Airlines Limited. | ICAO: FTZ, Callsign: Grey Bird, Name changed from Fly 540 Tanzania Ltd. Founded in 2011. Commenced operations on 29 November 2012. | EAT | AVCODES |
| 7 | FN | fastjet Zimbabwe Limited | ICAO: FJW, Callsign: Zimbird, | ZW | AVCODES |
| 8 | FNA | Air Iceland (Flugfelag Islands) | IATA: NY, IATA Prefix: 882, Name changed from Air Iceland | IS | AVCODES |
| 9 | FNA | Air Iceland | IATA: NY, IATA Prefix: 882, Name changed to Air Iceland (Flugfelag Islands) | IS | AVCODES |
| 10 | FNA | Flugfelag Nordurlands | Callsign: Norland, Desigantor NO recalled by IATA | IS | AVCODES |
| 11 | FNA | Fennec | Callsign: Fennec, | RN | AVCODES |
| 12 | FNA | Flugfelag Nordurlands | IATA: NO, Callsign: Norland, Desigantor NO recalled by IATA | IS | AVCODES |
| 13 | FNA | Norlandair | | IS | AVCODES |
| 14 | FNAI | FREEMAN NORTH AMERICAN INC | | | SCAC3 |
| 15 | FNAL | FANALE TRUCKING | | | SCAC3 |
| 16 | FNAM | FOCUS NORTH AMERICA INC | | | SCAC4 |
| 17 | FNAN | FOCUS NORTH AMERICA TRANSPORTATION | | | SCAC4 |
| 18 | FNAT | F & A TRANSPORT SYSTEMS CO | | | SCAC3 |
| 19 | FNAV | FREEPORT NAVIGATION CO LTD | | | SCAC3 |
| 20 | FNAX | Ferrellgas, L.P. | 7/2000-7/2005 (not listed) | | NAKINA |
| 21 | FNAX | Ferrellgas, L.P. | Jul-00 | | NRHS |
| 22 | FNAX | FERRELLGAS LP | | | PWRC |
| 23 | FNAX | Ferrellgas LLP | | | RSRV |
| 24 | FNAX | FERRELLGAS LP | | | SCAC4 |
| 25 | FNB | FNA | | IL | AVCODES |
| 26 | FNBC | FNB TRANSPORT LLC | | | SCAC4 |
| 27 | FNBE | FINBETA SPA | | | SCAC4 |
| 28 | FNBK | F & B TRUCKING | | | SCAC3 |
| 29 | FNBL | FIVE ZERO ZERO FIVE ONE SIX (500516 | | | SCAC4 |
| 30 | FNBL | Falconbridge Limited | | USA | TRAFFIC |
| 31 | FNBO | FISHER & BROTHER | | | SCAC3 |
| 32 | FNBS | F & N BUS SERVICE INC | | | SCAC3 |
| 33 | FNBS | FERGUSON, T M LLC | | | SCAC4 |
| 34 | FNBT | FLYING Z TRUCKING | | | SCAC4 |
| 35 | FNBU | FLORENS ASSET MANAGEMENT COMPANY LIMITED | | HK | BIC |
| 36 | FNC | Finalair Congo | IATA: 4S, Callsign: Finalair Congo, IATA Prefix: 122, | ZRE | AVCODES |
| 37 | FNC | Finalair Congo | IATA: 4S | | ICAO1 |
| 38 | FNCA | FRANCIS AUTO INC | | | SCAC3 |
| 39 | FNCC | FANUCCHI, TONY G | | | SCAC3 |
| 40 | FNCH | FINCH DISTRIBUTION SYSTEMS | | | SCAC3 |
| 41 | FNCH | FINCH DISTRIBUTION SYSTEMS | | | SCAC4 |
| 42 | FNCI | FINOCCHIARO INC | | | SCAC3 |
| 43 | FNCK | F & C TRUCKING INC | | | SCAC3 |
| 44 | FNCL | FREEWAY NAVIGATION CO. LTD. | | | SCAC3 |
| 45 | FNCO | F & C TRANSFER CO INC | | | SCAC3 |
| 46 | FNCO | FRANCO TRUCKING INC | | | SCAC4 |
| 47 | FNCP | FTC ENTERPRISES LLC | | | SCAC4 |
| 48 | FNCQ | FASTLANE COURIER LLC | | | SCAC4 |
| 49 | FNCS | FIRST NATIONAL COURIER SYSTEMS INC | | | SCAC3 |
| 50 | FNCW | FOUNDATION COMPANY LIMITED | | | SCAC4 |
| 51 | FNCY | FETCH N CARRY TRUCKING | | | SCAC3 |
| 52 | FNDC | FONDREN CORPORATION | | | SCAC3 |
| 53 | FNDC | FONDREN I E N E | | | SCAC4 |
| 54 | FNDE | FINDLEY, ERVIN INC | | | SCAC3 |
| 55 | FNDE | FUNDIDORA EL MENY | | | SCAC4 |
| 56 | FNDG | FERNDALE GRAIN CO | | | SCAC3 |
| 57 | FNDG | FRAN TRANSPORT & OIL | | | SCAC4 |
| 58 | FNDH | FINDLAY SHIPPING CORP | | | SCAC4 |
| 59 | FNDK | FINDLEY TRUCKING INC | | | SCAC4 |
| 60 | FNDL | FANDRICK, LARRY | | | SCAC3 |
| 61 | FNDL | FINDLEY, THADDEUS H | | | SCAC4 |
| 62 | FNDM | Ferrocarriles Nacionales de México | Real: FNM | MEX | TRAFFIC |
| 63 | FNDN | FRIENDLY MESSENGER SERVICE | | | SCAC4 |
| 64 | FNDO | FINDLEY, GEORGE I | | | SCAC3 |
| 65 | FNDO | FINDLEY, GEORGE | | | SCAC4 |
| 66 | FNDS | FERNANDES TRUCKING | | | SCAC3 |
| 67 | FNDS | FERNANDES TRUCKING | | | SCAC4 |
| 68 | FNDT | FOOTE & DAVIES TRANSPORT CO | | | SCAC3 |
| 69 | FNE | Farnair Europe B.V. | Callsign: Farnair Europe, | NL | AVCODES |
| 70 | FNE | TFM, S.A. de C.V. | added 10/1997; eliminated 4/1999; 7/2000-7/2005 | | NAKINA |
| 71 | FNE | Ferrocarriles Nacionales de Mexico | added 4/1996; eliminated 10/1997 | | NAKINA |
| 72 | FNE | Ferrocarriles Nacionales de Mexico | added 4/96; eliminated 10/97 | | NRHS |
| 73 | FNE | TFM, S.A. de C.V. | added 10/97; eliminated 4/99; 7/2000 | | NRHS |
| 74 | FNE | TFM, SA DE CV [FERROCARRILES NACIONALES DE MEXICO] | | | PWRC |
| 75 | FNE | Ferrocarriles Nacionales de Mexico | | | RSRV |
| 76 | FNEC | FINEST TRUCKING CORP | | | SCAC4 |
| 77 | FNEI | F & E TRANSPORTATION INC | | | SCAC3 |
| 78 | FNEI | FINNISS, EARL | | | SCAC4 |
| 79 | FNEL | FEDUN, NEIL | | | SCAC3 |
| 80 | FNEL | FEDUN, NEIL | | | SCAC4 |
| 81 | FNEQ | FINNERTY EQUIPMENT | | | SCAC3 |
| 82 | FNEQ | FINNERTY EQUIPMENT | | | SCAC4 |
| 83 | FNET | FREIGHTNET | | | SCAC4 |
| 84 | FNF | Finnish Air Force | Callsign: Finnforce, Head Quarters | FIN | AVCODES |
| 85 | FNF | Finnish Air Force | | | ICAO1 |
| 86 | FNFA | FRIESEN FARM | | | SCAC4 |
| 87 | FNFE | FRIESEN, G E | | | SCAC4 |
| 88 | FNFI | FLETES INDUSTRIALES REGIOMONTANOS S | | | SCAC4 |
| 89 | FNFM | FORTY NINER (49ER) FARM SUPPLIES & | | | SCAC3 |
| 90 | FNFN | FIVE NINE (59) TRANSPORT | | | SCAC4 |
| 91 | FNFP | F & F TRANSPORT SERVICE INC | | | SCAC3 |
| 92 | FNFR | FINELINE FREIGHTWAYS INC | | | SCAC3 |
| 93 | FNFS | FUNFSINN, KENNETH TRUCKING | | | SCAC3 |
| 94 | FNG | Finnish Border Guard | Callsign: Finnguard, | FIN | AVCODES |
| 95 | FNG | Frontier Guard | | | ICAO1 |
| 96 | FNG | FNG Logistics | added 1/2004; eliminated 4/2004; 7/2005 | | NAKINA |
| 97 | FNG | FNG LOGISTICS | | | PWRC |
| 98 | FNG | FNG LOGISTICS | | | SCAC4 |
| 99 | FNGJ | FLANAGAN, JAMES J SHIPPING CORP | | | SCAC3 |
| 100 | FNGK | FINCH, GLEN TRUCKING | | | SCAC3 |
