| 1 | FP | TAG Aviation, S.A. | ICAO: FPG, Callsign: TAG Aviation, Designator FP recalled by IATA. Name changed from Aeroleasing, S.A. | CH | AVCODES |
| 2 | FP | Aerotechnology Pty Ltd d/b/a Par-Avion | Designator FP* recalled by IATA | AUS | AVCODES |
| 3 | FP | Aviation Services, Ltd. d/b/a Freedom Air | ICAO: FRE, Callsign: Freedom, Operations suspended on 01 April 2014. | GUM | AVCODES |
| 4 | FP | Aeroleasing, S.A. | ICAO: FPG, Callsign: Aeroleasing, Name changed to TAG Aviation, S.A. ICAO callsign changed from Fox Papa | CH | AVCODES |
| 5 | FP | Aeroleasing, S.A. | ICAO: FPG, Callsign: Fox Papa, ICAO callsign changed to Aeroleasing | CH | AVCODES |
| 6 | FP | Servicios Aereos de Los Andes S.A.C. | ICAO: AND, Callsign: Servi Andes, Designator FP recalled by IATA. | PE | AVCODES |
| 7 | FP | CA Fly Pro SRL | ICAO: PVV, Callsign: Sunday, IATA Prefix: 315, AOC granted 30 November 2016 | MD | AVCODES |
| 8 | FP | Pelican Airlines Pty Ltd t/a FlyPelican | Callsign: Pelican, Commenced operations on 01 June 2015. | AUS | AVCODES |
| 9 | FP | Fordyce & Princeton R.R. Co. | 1/1975-1/1980; added 4/1981; 1/1994-7/2000 | | NAKINA |
| 10 | FP | Fordyce & Princeton R.R. Co. | 1/75-1/80; added 4/81; 1/94-7/2000 | | NRHS |
| 11 | FP | FORDYCE & PRINCETON RAILROAD CO. | | | PWRC |
| 12 | FP | Fordyce and Princeton Railroad | | | RSRV |
| 13 | FP | Ferrovia Padane | | I | TRAFFIC |
| 14 | FP&E | The Fairport, Painesville & Eastern R.R. Co. | 7/1930-7/1935 | | NAKINA |
| 15 | FP&E | FAIRPORT, PAINESVILLE & EASTERN RAILROAD CO. | | | PWRC |
| 16 | FPA | Flygprestanda AB | | S | AVCODES |
| 17 | FPA | Flygprestanda | | | ICAO1 |
| 18 | FPAC | FARMERS PLANT AID CORPORATION | | | SCAC3 |
| 19 | FPAF | FRIESEN, P A FAMILY FARMS | | | SCAC4 |
| 20 | FPAK | FPA TRUCKING CO | | | SCAC4 |
| 21 | FPAL | FIDEPAL S DE RL DE IP Y CV | | | SCAC4 |
| 22 | FPAO | FREEDOM GROUP INC | | | SCAC4 |
| 23 | FPAT | FRASER, PAT INC | | | SCAC3 |
| 24 | FPAU | FIRST PRIDE INVESTMENT LIMITED | | | SCAC4 |
| 25 | FPAX | Formosa Transrail Corp. | added 1/1998; 7/2000-7/2005 | | NAKINA |
| 26 | FPAX | Formosa Plastics Corp. U.S.A. | added 4/1981; 1/1994; eliminated 1/1998 | | NAKINA |
| 27 | FPAX | Formosa Plastics Corp. U.S.A. | added 4/81; 1/94; eliminated 1/98 | | NRHS |
| 28 | FPAX | Formosa Transrail Corp. | added 1/98; 7/2000 | | NRHS |
| 29 | FPAX | FORMOSA PLASTIC CORPORATION (FORMOSA TRANSRAIL CORP.) | | | PWRC |
| 30 | FPAX | Formosa Plastics Corporation (Formosa Transrail Corporation) | | | RSRV |
| 31 | FPAX | FORMOSA TRANSRAIL CORPORATION | | | SCAC4 |
| 32 | FPBC | FIRST PANAMAX BULKCARRIERS, INC | | | SCAC3 |
| 33 | FPBK | FERROSTAAL-POSEIDON BULK REEDEREI G | | | SCAC3 |
| 34 | FPBK | FIVE RIVERS TRANSPORTATION INC | | | SCAC4 |
| 35 | FPBX | International Paper Co. | added 4/1999; 7/2000-7/2005 | | NAKINA |
| 36 | FPBX | FPB Leasing Corp. | added 10/1995 | | NAKINA |
| 37 | FPBX | Federal Paper Board Co., Inc. | added 4/1975; 1/1980-1/1994; eliminated 10/1995 | | NAKINA |
| 38 | FPBX | Federal Paper Board Co., Inc. | added 4/75; 1/80-1/94; eliminated 10/95 | | NRHS |
| 39 | FPBX | FPB Leasing Corp. | added 10/95 | | NRHS |
| 40 | FPBX | International Paper Co. | added 4/99; 7/2000 | | NRHS |
| 41 | FPBX | INTERNATIONAL PAPER CO. [FPB LEASING CORP.; FEDERAL PAPER BOARD COMPANY INC.] | | | PWRC |
| 42 | FPBX | Federal Paper Board (International Paper Corporation) | | | RSRV |
| 43 | FPBX | INTERNATIONAL PAPER COMPANY | | | SCAC4 |
| 44 | FPBX | Federal Paper Board | | USA | TRAFFIC |
| 45 | FPC | Lillbacka Jetair Oy | Callsign: Finnpower, | FIN | AVCODES |
| 46 | FPC | Flight Pro International, LLC | Callsign: Pro Connect, | USA | AVCODES |
| 47 | FPC | FLORIDA PORTLAND CEMENT CO. | | | PWRC |
| 48 | FPC | Federal Passenger Company | | RU | TRAFFIC |
| 49 | FPC | JSC FEDERAL PASSENGER COMPANY | | RU | VKM |
| 50 | FPCC | F P C CARTAGE INC | | | SCAC3 |
| 51 | FPCC | F P C CARTAGE INC | | | SCAC4 |
| 52 | FPCE | FELTON PEARSON CO INC | | | SCAC4 |
| 53 | FPCK | FRESH PACK TRANSPORTATION INC | | | SCAC4 |
| 54 | FPCL | FER PAL CONSTRUCTION LTD | | | SCAC4 |
| 55 | FPCO | FLORIDA POWER CORPORATION | | | SCAC3 |
| 56 | FPCP | F P C TRANSPORTATION INC | | | SCAC4 |
| 57 | FPCQ | FASTPAC TRANSPORTATION CO | | | SCAC3 |
| 58 | FPCQ | FIRST COAST REFRIGERATED TRANSPORT | | | SCAC4 |
| 59 | FPCR | FLORIDA PETROLEUM CORPORATION | | | SCAC4 |
| 60 | FPCS | FLINT SPECIAL SERVICES INC | | | SCAC3 |
| 61 | FPCS | FLINT SPECIAL SERVICES INC | | | SCAC4 |
| 62 | FPCT | FAPCO TRANSPORTATION | | | SCAC3 |
| 63 | FPCX | Oxy Vinyls L.P. | added 7/1999; 7/2000-7/2005 | | NAKINA |
| 64 | FPCX | Occidental Chemical Corp. | added 1/1992; 1/1994; eliminated 7/1999 | | NAKINA |
| 65 | FPCX | Occidental Chemical Corp., PVC Resins | added 10/1982; eliminated 1/1992 | | NAKINA |
| 66 | FPCX | Hooker Chemicals and Plastics Corp. | added 10/1981; eliminated 10/1982 | | NAKINA |
| 67 | FPCX | Firestone Plastics Co. | added 7/1979; 1/1980; eliminated 10/1981 | | NAKINA |
| 68 | FPCX | National Car Co. | 4/1947-1/1950 | | NAKINA |
| 69 | FPCX | Feldman Petroleum Co. | 7/1937-4/1938 | | NAKINA |
| 70 | FPCX | Feldman Petroleum Co. | Apr-38 | | NRHS |
| 71 | FPCX | Firestone Plastics Co. | added 7/79; 1/80; eliminated 10/81 | | NRHS |
| 72 | FPCX | Hooker Chemicals and Plastics Corp. | added 10/81; eliminated 10/82 | | NRHS |
| 73 | FPCX | Occidental Chemical Corp., PVC Resins | added 10/82; eliminated 1/92 | | NRHS |
| 74 | FPCX | Occidental Chemical Corp. | added 1/92; 1/94; eliminated 7/99 | | NRHS |
| 75 | FPCX | Oxy Vinyls L.P. | added 7/99; 7/2000 | | NRHS |
| 76 | FPCX | *FELDMAN PETROLEUM CO. | | | PWRC |
| 77 | FPCX | *NATIONAL CAR CO. | | | PWRC |
| 78 | FPCX | +OCCIDENTAL CHEMICAL CORP., PVC RESINS (OXY VINYLS, LP)[HOOKER CHEMICALS & PLASTICS CORP.; FIRESTONE PLASTICS CO.] | | | PWRC |
| 79 | FPCX | Firestone Plastics Co. (Occidental Chemical Corporation) | | | RSRV |
| 80 | FPCX | OXY VINYLS LP | | | SCAC4 |
| 81 | FPCZ | FLORIDA POWER CO. | | | PWRC |
| 82 | FPD | Aeroleasing (Deutschland) GmbH | | D | AVCODES |
| 83 | FPDC | FRONT PRESIDENT INC | | | SCAC4 |
| 84 | FPDI | FAST PACKAGE DELIVERY INC | | | SCAC3 |
| 85 | FPDS | FAST-PAC DELIVERY SERVICE | | | SCAC3 |
| 86 | FPDX | Forest Products Chemical Co. | 8/1920-7/1965; eliminated 10/1966 | | NAKINA |
| 87 | FPDX | Forest Products Chemical Co. | 4/38-7/65; eliminated 10/66 | | NRHS |
| 88 | FPDX | FOREST PRODUCTS CHEMICAL CO. | | | PWRC |
| 89 | FPDY | F P DUFFY INC | | | SCAC4 |
| 90 | FPE | (The) Fairport, Painesville & Eastern R.R. Co. | 7/1936-10/1966 & 1/1975-1/1980; eliminated 10/1984 | | NAKINA |
| 91 | FPE | Fairport, Painesville & Eastern R.R. Co. | 4/38-10/66 & 1/75-1/80; eliminated 10/84 | | NRHS |
| 92 | FPE | FAIRPORT, PAINESVILLE & EASTERN RAILROAD CO. | | | PWRC |
| 93 | FPEC | FIVE POINTS EXPRESS CARTAGE | | | SCAC4 |
| 94 | FPEN | FREEPORT ENTERPRISE | | | SCAC3 |
| 95 | FPEU | AXENS | | F | BIC |
| 96 | FPEU | AXENS | | | SCAC4 |
| 97 | FPFX | NorRail, Inc. | added 4/1997; eliminated 10/1999 | | NAKINA |
| 98 | FPFX | Foster Poultry Farms, Inc. | added 4/1980; 1/1994; eliminated 4/1997 | | NAKINA |
| 99 | FPFX | Foster Poultry Farms, Inc. | added 4/80; 1/94; eliminated 4/97 | | NRHS |
| 100 | FPFX | NorRail, Inc. | added 4/97; eliminated 10/99 | | NRHS |
