| 701 | FBOX | TTX COMPANY | | | SCAC4 |
| 702 | FBOY | FARM BOY INC | | | SCAC4 |
| 703 | FBP | Ferrovia Bologna-Portomaggiore | | I | TRAFFIC |
| 704 | FBPA | FRISCH, BENJAMIN PHILLIP | | | SCAC4 |
| 705 | FBPE | FARRUGGIOS BRISTOL AND PHILA AUTO E | | | SCAC3 |
| 706 | FBPT | FBP TRANSPORT | | | SCAC4 |
| 707 | FBR | Belair Ile de France | IATA: BL, Callsign: Eurobelair, Ceased operations during 2000 | F | AVCODES |
| 708 | FBR | FB Flugbereitschaft GbmH | Name changed to Avangard Aviation GmbH. | D | AVCODES |
| 709 | FBR | Avangard Aviation GmbH | Callsign: Avangard, Name changed from FB Flugbereitschaft GbmH. Using AOC of Baden Aircraft Operation GmbH. | D | AVCODES |
| 710 | FBRE | FIBRES DYNAMIQUES SOULARD INC | | | SCAC4 |
| 711 | FBRI | FOLEY BROTHERS INC | | | SCAC4 |
| 712 | FBRK | FREIGHT BROKERS INC | | | SCAC3 |
| 713 | FBRK | FASTBREAK BROKERAGE INC | | | SCAC4 |
| 714 | FBRL | FABRE LINE | | | SCAC3 |
| 715 | FBRQ | FIBERSPUN INC | | | SCAC3 |
| 716 | FBRT | FULBRIGHT TRUCKING | | | SCAC3 |
| 717 | FBRU | FRIGORIFICOS BRIGIDO LDA | | P | BIC |
| 718 | FBRX | Fiske Brothers Refining Co. | 7/1923; 7/1935-10/1966; eliminated 1/1970 | | NAKINA |
| 719 | FBRX | Fiske Brothers Refining Co. | 4/38-10/66; eliminated 1/70 | | NRHS |
| 720 | FBRX | FISKE BROTHERS REFINING CO. | | | PWRC |
| 721 | FBRX | FISKE BROTHERS REFINING CO | | | SCAC3 |
| 722 | FBS | FlyBosnia d.o.o. | IATA: 6W, Callsign: Bosnia Air, owner Al Shiddi Group (Saudi Arabia). | BIH | AVCODES |
| 723 | FBSD | FASHIONS BAJA S DE RL DE CV | | | SCAC4 |
| 724 | FBSI | FOOD BARN STORES INC | | | SCAC3 |
| 725 | FBSI | FERNANDEZ, BOB & SONS INC | | | SCAC4 |
| 726 | FBSL | FLAMINGO BAY SHIPPING LTD | | | SCAC3 |
| 727 | FBSP | FIRST BUSINESS SHIPPING CORP | | | SCAC4 |
| 728 | FBST | FOURET BROS TRUCKING INC | | | SCAC3 |
| 729 | FBSU | FRANCO BELGIAN SERVICES | | | PWRC |
| 730 | FBSU | Franco Belgian Services | | | RSRV |
| 731 | FBSU | FIMA FREIGHT FORWARDERS SDN BHD | | | SCAC4 |
| 732 | FBTC | FLOYD&BEASLEY TRANSFER COMPANY, INC | | | SCAC3 |
| 733 | FBTD | FABTRENDS INTL | | | SCAC4 |
| 734 | FBTG | F & B TRUCKING INC | | | SCAC3 |
| 735 | FBTI | FOX BROTHERS TRANSFER, INC | | | SCAC3 |
| 736 | FBTI | FOX BROTHERS TRANSFER INCORPORATED | | | SCAC4 |
| 737 | FBTJ | FOX, BARRY T JR | | | SCAC3 |
| 738 | FBTK | FLORA BROTHERS TRUCKING CO INC | | | SCAC3 |
| 739 | FBTL | F & B TRUCKING LLC | | | SCAC4 |
| 740 | FBTM | FOURET BROS TRUCKING INC | | | SCAC4 |
| 741 | FBTN | FARLEY TRANSPORTATION | | | SCAC3 |
| 742 | FBTN | FARLEY TRANSPORTATION INC | | | SCAC4 |
| 743 | FBTO | FOSTER BROS TRANSFER & STORAGE | | | SCAC3 |
| 744 | FBTQ | F-B TRUCKING INC | | | SCAC3 |
| 745 | FBTR | FABIAN TRUCKING | | | SCAC3 |
| 746 | FBTS | FREEBORN TRANSPORTATION SYSTEMS INC | | | SCAC3 |
| 747 | FBTU | INTERGERMANIA TRANSPORT GMBH | | D | BIC |
| 748 | FBTU | FLEXBULK GMBH | | | SCAC4 |
| 749 | FBTV | First Berkshire & The Thames Valley | | GB | TRAFFIC |
| 750 | FBTY | FABTRANS TRANSPORTATION | | | SCAC4 |
| 751 | FBU | French Blue | IATA: BF, Callsign: French Blue, Name changed to French bee. | F | AVCODES |
| 752 | FBU | French bee | IATA: BF, Callsign: French Bee, Name changed from French Blue. | F | AVCODES |
| 753 | FBUD | FORNONI BUILDERS | | | SCAC4 |
| 754 | FBUT | FLEW BY U TRANSPORT | | | SCAC4 |
| 755 | FBV | Ferrovia Bologna Vignola | Now integrated in Ferrovia Emilia Romagna | I | TRAFFIC |
| 756 | FBV | Suburbano FBV | | IT | VKM |
| 757 | FBVD | VAN DYKE, FRANK B | | | SCAC3 |
| 758 | FBVI | FARENCO SHIPPING CO LTD B V I | | | SCAC4 |
| 759 | FBVK | FIBERVISION PAPER STOCK LLC | | | SCAC4 |
| 760 | FBVQ | FIX & BRAIN VACUUM TRUCK SERVICE | | | SCAC3 |
| 761 | FBW | Aviation Data Systems, Inc. | | USA | AVCODES |
| 762 | FBW | Aviation Data Systems | | | ICAO1 |
| 763 | FBWX | Ft. Pitt Bridge Works of Pittsburgh | 7/1937 (not listed) | | NAKINA |
| 764 | FBWX | FT. PITT BRIDGE WORKS OF PITTSBURGH | | | PWRC |
| 765 | FBX | Flying Business Aviation, S.A. de C.V. | Callsign: Business Jet, | MEX | AVCODES |
| 766 | FBX | Fontenelle Brewing Co. | 7/1935 | | NAKINA |
| 767 | FBXP | FLATBED EXPRESS | | | SCAC4 |
| 768 | FBXU | LATAM BOX COLOMBIA SAS | | CO | BIC |
| 769 | FBXU | FLEX BOX LIMITED | | | SCAC4 |
| 770 | FBY | Fly Bai, S.L. | Callsign: Bai Fly, | E | AVCODES |
| 771 | FBYC | FOTOBOYZ COM | | | SCAC4 |
| 772 | FBYO | FANNY BAY OYSTERS | | | SCAC4 |
| 773 | FBYQ | F B Y HAULAGE CORP | | | SCAC3 |
| 774 | FBYT | FORTENBERRY TRUCKING LLC | | | SCAC4 |
| 775 | FBZ | F.B. Lineas Aereas S.A. t/a Flybondi | IATA: FO, Callsign: Bondi, Commenced operations on 26 January 2018. | RA | AVCODES |
| 776 | FBZ | FISHER BODY | | | PWRC |
| 777 | FBZE | FREE BREEZE ENERGY SYSTEMS LTD | | | SCAC4 |
| 778 | FBZU | CHINA OCEAN SHIPPING COMPANY | | | PWRC |
| 779 | FBZU | China Ocean Shipping | | | RSRV |
| 780 | FC | Tempelhof Express Airlines GmbH | ICAO: SYB, Designator FC recalled by IATA. Name changed from TAL Thuringia Airlines GmbH | D | AVCODES |
| 781 | FC | Falcon Express Cargo Airlines | ICAO: FCX, Callsign: Falcon Cargo, IATA Prefix: 553, Founded in 1995. Ceased operations in 2012. | UAE | AVCODES |
| 782 | FC | Etela-Pohjanmaan Lentokeskus Oy (West Bird Aviation) | ICAO: WBA, Callsign: Westbird, | FIN | AVCODES |
| 783 | FC | Fairflight Ltd. | ICAO: FGT, Callsign: Fairflight, | GB | AVCODES |
| 784 | FC | TAL Thuringia Airlines GmbH | ICAO: SYB, Name changed to Tempelhof Express Airlines GmbH | D | AVCODES |
| 785 | FC | Fragtflug Ltd. | Callsign: Isavia, | IS | AVCODES |
| 786 | FC | Finnish Commuter Airlines Oy | ICAO: WBA, Callsign: Westbird, ICAO designator changed to FCM. ICAO callsign changed to Finncomm. Name changed from Finnish Commuter Airlines Oy dba West Bird Aviation | FIN | AVCODES |
| 787 | FC | Finnish Commuter Airlines Oy | ICAO: WBA, Callsign: Westbird, Name changed to Finncomm | FIN | AVCODES |
| 788 | FC | Finnish Commuter Airlines Oy d/b/a Finncomm Airines | ICAO: FCM, Callsign: Finncom, ICAO designator changed from WBA. ICAO callsign changed from Westbird. Name changed from Finnish Commuter Airlines Oy dba West Bird Aviation | FIN | AVCODES |
| 789 | FC | Fast Colombia S.A.S d/b/a Viva Colombia | ICAO: VVC, Callsign: Viva Colombia, IATA designtor changed to VH. | CO | AVCODES |
| 790 | FC | Flybe Finland Oy | ICAO: FCM, Callsign: Finncom, Name changed from Finnish Commuter Airlines Oy d/b/a Finncomm Airines. ICAO designator changed from WBA. ICAO callsign changed from Westbird. Name changed from Finnish Commuter Airlines Oy dba West Bird Aviation | FIN | AVCODES |
| 791 | FC | Vee H Aviation Pty Ltd. t/a Corporate Air | Callsign: Fly Corp, Name changed to Vee H Aviation Pty Ltd. t/a LINK Airways / Fly FC | AUS | AVCODES |
| 792 | FC | Vee H Aviation Pty Ltd. t/a LINK Airways / Fly FC | Callsign: Fly Corp, Name changed from Vee H Aviation Pty Ltd. t/a Corporate Air. | AUS | AVCODES |
| 793 | FC | Fulton County R.R., Inc. | 7/2000-7/2005 | | NAKINA |
| 794 | FC | Fulton County R.R., Inc. | Jul-00 | | NRHS |
| 795 | FC | FULTON COUNTY RAILROAD | | | PWRC |
| 796 | FC | Fulton County Railroad | | | RSRV |
| 797 | FC | FULTON COUNTY RAILROAD INC | | | SCAC4 |
| 798 | FC | FerroCentral | | RA | TRAFFIC |
| 799 | FC | Ferrovia della Calabria | | IT | VKM |
| 800 | FCA | Stratford Airways Ltd. | Callsign: Festival City, | CDN | AVCODES |
