| 1 | WF | Wideroe's Flyveselskap A/S | ICAO: WIF, Callsign: Wideroe, IATA Prefix: 701, | N | AVCODES |
| 2 | WF | Wiggins Ferry Co. (East St. Louis Connecting Ry.) | 8/1920 | | NAKINA |
| 3 | WF | The Wiggins Ferry Co. (Terminal R.R. Association of St. Louis) | 7/1923-7/1930 | | NAKINA |
| 4 | WF | TERMINAL RAILROAD ASSOCIATION OF ST. LOUIS [EAST ST. LOUIS CONNECTING CO.; WIGGINS FERRY CO.] | | | PWRC |
| 5 | WF&N | Wichita Falls & Northwestern Ry. | 8/1920 | | NAKINA |
| 6 | WF&N | Wichita Falls & Northwestern Ry. (M.-K.-T. Lines) | 7/1923-7/1930 | | NAKINA |
| 7 | WF&N | M-K-T LINES [WICHATA FALLS & NORTHWESTERN RWY.] | | | PWRC |
| 8 | WFA | Westflug Aachen Luftfahfitgesellschaft mbH | Callsign: Westflug, | D | AVCODES |
| 9 | WFA | WESTERN FUEL ASSOCIATION | | | PWRC |
| 10 | WFAF | WIELERS FURNITURE AND FOOD MART LLC | | | SCAC4 |
| 11 | WFAM | WILLOWDALE FARMS | | | SCAC4 |
| 12 | WFAR | WHITESTONE FARMS | | | SCAC4 |
| 13 | WFAX | Western Fuels Association, Inc. | added 4/1979; 1/1980-7/2005 | | NAKINA |
| 14 | WFAX | Western Fuels Association, Inc. | added 4/79; 1/80-7/2000 | | NRHS |
| 15 | WFAX | WESTERN FUELS ASSOCIATION, INC. | | | PWRC |
| 16 | WFAX | Western Fuels Association | | | RSRV |
| 17 | WFAX | WESTERN FUELS ASSOCIATION, INC. | | | SCAC4 |
| 18 | WFAX | Western Fuels Association, Inc. | | USA | TRAFFIC |
| 19 | WFB | Burlington Northern Inc. | added 10/1975; 1/1980; eliminated 4/1981 | | NAKINA |
| 20 | WFB | Burlington Northern Inc. | 1/80; eliminated 4/81 | | NRHS |
| 21 | WFB | Westfalenbahn GmbH | Bielefeld | D | privat-bahn.de |
| 22 | WFB | BURLINGTON NORTHERN INC. | | | PWRC |
| 23 | WFB | Westfalenbahn | | D | TRAFFIC |
| 24 | WFB | WestfalenBahn GmbH | | DE | VKM |
| 25 | WFBN | Wells Fargo Bank Northwest | | USA | TRAFFIC |
| 26 | WFBX | Western Fruit Express Co. | added 10/1964; 7/1965-1/1975; eliminated 10/1979; 1/1980 | | NAKINA |
| 27 | WFBX | Western Fruit Express Co. | 7/65-1/80 | | NRHS |
| 28 | WFBX | WESTERN FRUIT EXPRESS CO. | | | PWRC |
| 29 | WFC | Swift Copters SA | Callsign: Swiftcopters, | CH | AVCODES |
| 30 | WFC | Swift Copters | | | ICAO1 |
| 31 | WFCC | WESTERN FISH COMPANY INC | | | SCAC4 |
| 32 | WFCI | WILSON FUEL CO INC | | | SCAC4 |
| 33 | WFCL | WESTFAIR FUEL CO LLC | | | SCAC4 |
| 34 | WFCP | WFC TRANSPORT | | | SCAC4 |
| 35 | WFCR | WESTERN FREIGHT CARRIER | | | SCAC4 |
| 36 | WFCX | Western Fruit Express Co. | added 1/1961; 4/1961-4/1970; eliminated 4/1974; 1/1975 | | NAKINA |
| 37 | WFCX | Western Farmers Electric Corp. | added 7/1981; 1/1994 | | NAKINA |
| 38 | WFCX | Western Farmers Electric Cooperative | 7/2000-7/2005 | | NAKINA |
| 39 | WFCX | Western Fruit Express Co. | 4/61-4/70; eliminated 4/74; 1/75 | | NRHS |
| 40 | WFCX | Western Farmers Electric Corp. | added 7/81; 1/94 | | NRHS |
| 41 | WFCX | Western Farmers Electric Cooperative | Jul-00 | | NRHS |
| 42 | WFCX | *WESTERN FRUIT EXPRESS CO. | | | PWRC |
| 43 | WFCX | +WESTERN FARMERS ELECTRIC COOPERATIVE | | | PWRC |
| 44 | WFCX | *WEST VIRGINIA CENTRAL RAILROAD | | | PWRC |
| 45 | WFCX | Western Farmers Electric Cooperative | | | RSRV |
| 46 | WFCX | WESTERN FARMERS ELECTRIC COOPERATIV | | | SCAC4 |
| 47 | WFD | Avro International Aerospace | Callsign: Avro, Name changed to Woodford Flight Test | GB | AVCODES |
| 48 | WFD | Woodford Flight Test | Callsign: Avro, Name changed to Warton Large Aircraft Flight Operations. Name changed from Avro International Aerospace | GB | AVCODES |
| 49 | WFD | Warton Large Aircraft Flight Operations | Callsign: Avro, Name changed from Woodford Flight Test. Name changed from Avro International Aerospace | GB | AVCODES |
| 50 | WFD | BAE Systems | | | ICAO1 |
| 51 | WFDA | WOODLAND FURNITURE DE MEXICO S DE R | | | SCAC4 |
| 52 | WFDB | W & F DISTRIBUTORS | | | SCAC4 |
| 53 | WFDC | WESTERN FLYER DELIVERY SERVICE | | | SCAC4 |
| 54 | WFDG | WOOF DESIGN LIMITED | | | SCAC4 |
| 55 | WFDI | WOLVERINE FIREWORKS DISPLAY INC | | | SCAC4 |
| 56 | WFDM | WHOLE FOODS MARKET | | | SCAC4 |
| 57 | WFDO | WFD INC | | | SCAC4 |
| 58 | WFE | Burlington Northern Inc. | added 10/1975; 1/1980; eliminated 7/1981 | | NAKINA |
| 59 | WFE | Burlington Northern R.R. Co. | added 7/1981; eliminated 7/1985; added 10/1985; eliminated 4/1995 | | NAKINA |
| 60 | WFE | Burlington Northern Inc. | 1/80; eliminated 7/81 | | NRHS |
| 61 | WFE | Burlington Northern R.R. Co. | added 7/81; eliminated 4/95 | | NRHS |
| 62 | WFE | BURLINGTON NORTHERN RAILROAD [WESTERN FRUIT EXPRESS] | | | PWRC |
| 63 | WFE | Western Fruit Express (BNSF Railway) | | | RSRV |
| 64 | WFE | Western Fruit Company | | USA | TRAFFIC |
| 65 | WFED | WINTERBOTTOM FEEDS & TRUCKING | | | SCAC4 |
| 66 | WFEI | WITHERUP FABRICATION AND ERECTION I | | | SCAC4 |
| 67 | WFEL | WOLFEES LLC | | | SCAC4 |
| 68 | WFET | WOLFE TRUCKING LLC | | | SCAC4 |
| 69 | WFEX | Western Fruit Express Co. | 7/1930-1/1980; eliminated 1/1981 | | NAKINA |
| 70 | WFEX | Western Fruit Express Co. | 4/38-1/80; eliminated 1/81 | | NRHS |
| 71 | WFEX | WESTERN FRUIT EXPRESS CO. | | | PWRC |
| 72 | WFEX | Western Fruit Express Co. | | USA | TRAFFIC |
| 73 | WFFC | WILSON FREIGHT CO | | | PWRC |
| 74 | WFFC | WOODYS FAST FREIGHT LLC | | | SCAC4 |
| 75 | WFFP | WOLFF TRANSPORTS INC | | | SCAC4 |
| 76 | WFFS | WESTERN FLOOR FASHIONS | | | SCAC4 |
| 77 | WFGF | WILFONG FARMS TRUCKING LLC | | | SCAC4 |
| 78 | WFGL | WULF, G L TRUCKING INC | | | SCAC4 |
| 79 | WFGX | Watseka Farmers Grain Co. Co-op | added 1/2004; eliminated 4/2004; 7/2005 (not listed) | | NAKINA |
| 80 | WFGX | WATSEKA FARMERS GRAIN CO. CO-OP | | | PWRC |
| 81 | WFGX | WATSEKA FARMERS GRAIN COMPANY CO-OP | | | SCAC4 |
| 82 | WFGZ | WATER FIELD GRAIN | | | PWRC |
| 83 | WFH | Wanfeng General Aviation Co., Ltd. | Callsign: Wanfeng, | PRC | AVCODES |
| 84 | WFHL | WESTMORLAND FISHERIES LTD | | | SCAC4 |
| 85 | WFHU | WATERFRONT CONTAINER LEASING CO INC. | | USA | BIC |
| 86 | WFHU | Waterfront Container Leasing | | | RSRV |
| 87 | WFHU | WATERFRONT CONTAINER LEASING CO INC | | | SCAC4 |
| 88 | WFHX | WILLAMETTE & FORT HILL RAILROAD | | | PWRC |
| 89 | WFIC | WESTLAND FREIGHT INC | | | SCAC4 |
| 90 | WFII | WATERART FITNESS INTERNATIONAL INC | | | SCAC4 |
| 91 | WFIV | WHOLESOME FOODS INC | | | SCAC4 |
| 92 | WFIX | West Fork Logging Co. | 7/1935 | | NAKINA |
| 93 | WFIX | WFIX Partners | added 4/1981; eliminated 4/1988 | | NAKINA |
| 94 | WFIX | Pullman Leasing Co. | added 4/1988; eliminated 1/1990 | | NAKINA |
| 95 | WFIX | Itel Rail Corp. | added 1/1990; eliminated 10/1992 | | NAKINA |
| 96 | WFIX | General Electric Railcar Services Corp. | added 10/1992; 1/1994; eliminated 1/2000 | | NAKINA |
| 97 | WFIX | General Electric Rail Services Corp. | added 1/2000; 7/2000; eliminated 1/2001 | | NAKINA |
| 98 | WFIX | First Union Rail | added 1/2001; 7/2005 | | NAKINA |
| 99 | WFIX | WFIX Partners | added 4/81; eliminated 4/88 | | NRHS |
| 100 | WFIX | Pullman Leasing Co. | added 4/88; eliminated 1/90 | | NRHS |
