| 4701 | FNOR | Florida Northern Railroad | | | RSRV |
| 4702 | FNOR | FLORIDA NORTHERN RAILROAD COMPANY I | | | SCAC3 |
| 4703 | FNPL | FENTEN ENTERPRISES LLC | | | SCAC4 |
| 4704 | FNPO | F & P TRUCKING CO | | | SCAC3 |
| 4705 | FNPQ | F & P MOTOR SERVICE INC | | | SCAC3 |
| 4706 | FNQL | FINSTEAD SHIPPING LTD. | | | SCAC3 |
| 4707 | FNQL | FINSTEAD SHIPPING LTD | | | SCAC4 |
| 4708 | FNQM | FRAIOLI & QUIGLEY MOVING INC | | | SCAC3 |
| 4709 | FNR | Fanair Limited Trust Distribution | Ceased operations. | UA | AVCODES |
| 4710 | FNRA | FENTON, ROBERT A | | | SCAC3 |
| 4711 | FNRA | FUNDIDORA URECA SA DE CV | | | SCAC4 |
| 4712 | FNRD | FOUNTAIN TIRE LTD | | | SCAC4 |
| 4713 | FNRH | FOUNTAIN, R H TRUCKING CO | | | SCAC3 |
| 4714 | FNRP | FRONTIER TRANSPORT LTD | | | SCAC3 |
| 4715 | FNRR | FRONTIER TRANSPORT | | | SCAC4 |
| 4716 | FNRT | FANETTI TRANSPORT INC | | | SCAC3 |
| 4717 | FNRT | FENNER TRUCKING INC | | | SCAC4 |
| 4718 | FNRU | FAR NORTH CARGO, INC. | | | SCAC3 |
| 4719 | FNRV | FINDLAY, R G | | | SCAC3 |
| 4720 | FNRV | FLENORYS TRANSPORTATION LLC | | | SCAC4 |
| 4721 | FNS | Finesse Executive Limited | Callsign: Finesse, | GB | AVCODES |
| 4722 | FNS | First Norfolk and Suffolk (First Eastern Counties) | | GB | TRAFFIC |
| 4723 | FNSA | FLENSA SA DE CV | | | SCAC4 |
| 4724 | FNSD | F&S DISTRIBUTING CO | | | SCAC3 |
| 4725 | FNSD | F & S DISTRIBUTING CO LLC | | | SCAC4 |
| 4726 | FNSE | FOUR NINE SIX EIGHT FIVE TWO (49685 | | | SCAC4 |
| 4727 | FNSF | FNS INC | | | SCAC4 |
| 4728 | FNSH | FINK & STACKHOUSE INC | | | SCAC3 |
| 4729 | FNSK | FREITAS, A & SON TRUCKING | | | SCAC3 |
| 4730 | FNSL | FUTURE NETS & SUPPLIES LTD | | | SCAC4 |
| 4731 | FNSM | FATHER & SON MOVING & STORAGE OF NE | | | SCAC3 |
| 4732 | FNSM | FIRST NAVIGATION SPECIAL MARITIME E | | | SCAC4 |
| 4733 | FNSN | FRIEDMAN & SON | | | SCAC3 |
| 4734 | FNSO | FREEMAN SHIPPING CO | | | SCAC4 |
| 4735 | FNSQ | FINSTER, W M DELIVERY SERVICE | | | SCAC3 |
| 4736 | FNST | FRANK & SON TRUCKING INC | | | SCAC3 |
| 4737 | FNST | FRANK & SON TRUCKING | | | SCAC4 |
| 4738 | FNT | Flight International Airlines, Inc. | Callsign: Flight International, Name changed to L-3 Communications Flight International Aviation LLC | USA | AVCODES |
| 4739 | FNT | L-3 Communications Flight International Aviation LLC | Callsign: Flight International, Name changed from Flight International Airlines, Inc. | USA | AVCODES |
| 4740 | FNT | Finlight Airline L.L.C. | Callsign: Avialight, | RUS | AVCODES |
| 4741 | FNT | L-3 Communications Flight Internation Aviation | | | ICAO1 |
| 4742 | FNTA | FONTANA VAN & STORAGE INC | | | SCAC3 |
| 4743 | FNTB | FOUNTAIN TIRE | | | SCAC4 |
| 4744 | FNTC | F & P CARTING INC | | | SCAC3 |
| 4745 | FNTD | FRONTIER DISTRIBUTING | | | SCAC3 |
| 4746 | FNTD | FRONTIER DISTRIBUTING | | | SCAC4 |
| 4747 | FNTE | F & T ENTERPRISE INC | | | SCAC3 |
| 4748 | FNTE | FUENTES GUAJARDO, CESAR ARMANDO | | | SCAC4 |
| 4749 | FNTG | FLINT TRUCKING | | | SCAC3 |
| 4750 | FNTG | FLINN TRUCKING | | | SCAC4 |
| 4751 | FNTH | FLEENOR TRANSPORT INC | | | SCAC3 |
| 4752 | FNTH | FRONT RANGE MOTORSPORTS | | | SCAC4 |
| 4753 | FNTJ | FONTENOT, JESSE INC | | | SCAC4 |
| 4754 | FNTL | FRANSON TRUCK LINES | | | SCAC3 |
| 4755 | FNTL | FRANSON TRUCK LINES | | | SCAC4 |
| 4756 | FNTM | FUN TIMES TOURS INC | | | SCAC3 |
| 4757 | FNTN | FOUNTAIN MOVING & STORAGE CO | | | SCAC3 |
| 4758 | FNTO | FIRST NATIONAL TRANSPORTATION INC | | | SCAC3 |
| 4759 | FNTP | F & N TRANSPORT INC | | | SCAC4 |
| 4760 | FNTQ | FIRST NATIONS TRANSPORTATION INC | | | SCAC4 |
| 4761 | FNTR | FINK TRANSPORT INC | | | SCAC3 |
| 4762 | FNTR | FERGUSON TRUCKING CORPORATION | | | SCAC4 |
| 4763 | FNTT | FENTON TRUCKING INC | | | SCAC3 |
| 4764 | FNTU | FLORENS ASSET MANAGEMENT COMPANY LIMITED | | HK | BIC |
| 4765 | FNTX | Ferronet, S.A. de C.V. | 7/2005 (not listed) | | NAKINA |
| 4766 | FNTX | FERRONET SA DE CV | | | PWRC |
| 4767 | FNTX | FERRONET S A DE C V | | | SCAC4 |
| 4768 | FNTY | FURNITURE TRANSPORTATION SYSTEMS | | | SCAC4 |
| 4769 | FNV | Transaviaservice | Callsign: Transaviaservice, | GE | AVCODES |
| 4770 | FNV | Transaviaservice | | | ICAO1 |
| 4771 | FNVG | FOREST NAVIGATION OVERSEAS SA PANAM | | | SCAC3 |
| 4772 | FNVG | FORTUNE NAVIGATION CO LTD HONG KONG | | | SCAC4 |
| 4773 | FNVL | FINAVAL S P A | | | SCAC3 |
| 4774 | FNVL | FINAVAL S P A | | | SCAC4 |
| 4775 | FNVY | FAIRNAVY SHIPPING LTD | | | SCAC3 |
| 4776 | FNW | Freemont Northwestern R.R. Inc. | 7/2005 | | NAKINA |
| 4777 | FNW | FREEMONT NORTHWESTERN RAILROAD, INC. | | | PWRC |
| 4778 | FNW | FREMONT NORTHWESTERN RAILROAD INC | | | SCAC4 |
| 4779 | FNW | First North Western Ltd. | | GB | TRAFFIC |
| 4780 | FNW | First North Western | | UK | VKM |
| 4781 | FNWP | F & W TRANSPORTATION INC | | | SCAC4 |
| 4782 | FNWT | F & W TRANSPORT CO INC | | | SCAC3 |
| 4783 | FNX | Fenix Airways | Callsign: Skyfair, | LV | AVCODES |
| 4784 | FNX | Finair | Callsign: Finex, | USA | AVCODES |
| 4785 | FNX | Aero Fenix | Callsign: Aero Fenix, | P | AVCODES |
| 4786 | FNX | Fenix Air Charter | Callsign: Cresent, | USA | AVCODES |
| 4787 | FNX | Aero Fenix | | | ICAO1 |
| 4788 | FNXC | FALCON TRANSPORTATION OF CANADA LTD | | | SCAC4 |
| 4789 | FNXS | FALCON NATIONAL EXPRESS | | | SCAC4 |
| 4790 | FNXT | FENIX TRANSPORT | | | SCAC4 |
| 4791 | FNY | France Marine Nationale | Callsign: French Navy, French Navy | F | AVCODES |
| 4792 | FNY | France Marine Nationale | | | ICAO1 |
| 4793 | FNYC | FOR/TRANS INC | | | SCAC4 |
| 4794 | FNYS | FINNYS TRANSPORT INC | | | SCAC3 |
| 4795 | FNZB | FRANTZ BROTHERS TRUCKING INC | | | SCAC3 |
| 4796 | FNZC | FRENZEL CONSTRUCTION CO | | | SCAC3 |
| 4797 | FNZF | FIVE NINE ZERO FIVE ONE ZERO ZERO ( | | | SCAC4 |
| 4798 | FNZI | FON-Z INC | | | SCAC4 |
| 4799 | FO | Circle Air Freight Corp. | Designator FO recalled by IATA | USA | AVCODES |
| 4800 | FO | Airlines of Tasmania Pty Ltd. | ICAO: ATM, Callsign: Airtas, Designator IP recalled by IATA | AUS | AVCODES |
