| 1 | WG | Air Ecosse | ICAO: ECS, Callsign: Air Ecosse, | GB | AVCODES |
| 2 | WG | Wasaya Airways L.P. | ICAO: WSG, Callsign: Wasaya, IATA Prefix: 093, IATA designator changed to WT. Name changed from Wasaya Airways Ltd. | CDN | AVCODES |
| 3 | WG | Worldways Canada Ltd. | ICAO: WWC, Callsign: Worldways Canada, Ceased operations | CDN | AVCODES |
| 4 | WG | Wasaya Airways Ltd. | ICAO: WSG, Callsign: Wasaya, IATA Prefix: 093, Name changed to Wasaya Airways L.P. | CDN | AVCODES |
| 5 | WG | Fairflight Charters | | GB | AVCODES |
| 6 | WG | Sunwing Airlines Inc | ICAO: SWG, IATA Prefix: 292, IATA designator changed from K0 on 15 Aug 2006. Founded in 2005 | CDN | AVCODES |
| 7 | WG | Walter Gasthaus Gleis und Tiefbau GmbH & Co KG | | DE | VKM |
| 8 | WGA | Vega Air Company Ltd | Callsign: Wega Franko, | UA | AVCODES |
| 9 | WGA | Vega Air Company | | | ICAO1 |
| 10 | WGAD | WALDAN GARDENS | | | SCAC4 |
| 11 | WGAG | WAYBACK GARAGE | | | SCAC4 |
| 12 | WGAS | WARNERS GAS SERVICE INC | | | SCAC4 |
| 13 | WGBG | WAGENBORG SHIPPING B V | | | SCAC4 |
| 14 | WGBS | WEST WIND INTERMODAL INC | | | SCAC4 |
| 15 | WGBX | Whitaker-Glessner Co. | 8/1920-7/1923 | | NAKINA |
| 16 | WGBX | Whitaker-Glessner Co. (Wheeling Steel Corp.) | 7/1930 | | NAKINA |
| 17 | WGBX | W.G. Block Co. | 1/1975-1/1980 | | NAKINA |
| 18 | WGBX | W.G. Block Co. (captive service) | 1/1994 (not listed) | | NAKINA |
| 19 | WGBX | W.G. Block Co. | 1/75-1/80 | | NRHS |
| 20 | WGBX | W.G. Block Co. (captive service) | Jan-94 | | NRHS |
| 21 | WGBX | *WHEELING STEEL CORP. [WHITAKER-GLESSNER CO.] | | | PWRC |
| 22 | WGBX | *W G BLOCK COMPANY | | | PWRC |
| 23 | WGBX | W. G. Block | | | RSRV |
| 24 | WGCD | WAGON COMPANY SA DE CV, THE | | | SCAC4 |
| 25 | WGCN | WHITING GROUP OF CANADA INC | | | SCAC4 |
| 26 | WGCO | WESTERN GECO LLC | | | SCAC4 |
| 27 | WGCP | WEGO COURIERS | | | SCAC4 |
| 28 | WGCQ | WILHELM TRUCKING | | | SCAC4 |
| 29 | WGCR | Wiregrass Central R.R. Co. | added 4/1988; 1/1994-7/2005 | | NAKINA |
| 30 | WGCR | Wiregrass Central R.R. Co. | added 4/88; 1/94-7/2000 | | NRHS |
| 31 | WGCR | WIREGRASS CENTRAL RAILROAD CO. | | | PWRC |
| 32 | WGCR | Wiregrass Central Railroad | | | RSRV |
| 33 | WGCR | WIREGRASS CENTRAL RAILWAY LLC | | | SCAC4 |
| 34 | WGCR | Wiregrass Central Railroad | | USA | TRAFFIC |
| 35 | WGCS | WILLSON TRUCKING | | | SCAC4 |
| 36 | WGCU | WILHELM GROTE INTERNATIONAL | | | SCAC4 |
| 37 | WGEA | WARNERT RACING INC | | | SCAC4 |
| 38 | WGEN | WONG, MATHEW | | | SCAC4 |
| 39 | WGEP | WILSON, GALEN E PETROLEUM CO | | | SCAC4 |
| 40 | WGER | WILLIAMS, GENE R | | | SCAC1 |
| 41 | WGER | WILLIAMS, GENE R TRUCKING INCORPORA | | | SCAC4 |
| 42 | WGES | WADE, GARY ENTERPRIZES INC | | | SCAC4 |
| 43 | WGET | WEST GARDINER BEEF | | | SCAC4 |
| 44 | WGFK | WARREN, GARRY & FAMILY TRUCKING LLC | | | SCAC4 |
| 45 | WGFX | Willard Grain & Feed Inc. | added 7/1984; 1/1994; 7/2000 (not listed) | | NAKINA |
| 46 | WGFX | Willard Grain & Feed Inc. | added 7/84; 1/94-7/2000 | | NRHS |
| 47 | WGFX | WILLARD GRAIN & FEED INC. | | | PWRC |
| 48 | WGFX | Willard Grain and Feed | | | RSRV |
| 49 | WGGN | WESTERN MOTOR FREIGHT INC | | | SCAC4 |
| 50 | WGGP | WESTERN SHIPPING (HK) LTD | | | SCAC4 |
| 51 | WGHM | WALL GRAIN HANDLING SYSTEMS LTD | | | SCAC4 |
| 52 | WGHT | WIGHT, I S & SONS TRUCKING LTD | | | SCAC4 |
| 53 | WGIB | WILLSON-GREEN INTERNATIONAL INC | | | SCAC4 |
| 54 | WGIH | WILDLIFE GALLERY INC, THE | | | SCAC4 |
| 55 | WGII | WAGNER INDUSTRIES INC | | | SCAC4 |
| 56 | WGJA | WATERHOUSE, GARY & JANICE | | | SCAC4 |
| 57 | WGJC | WESTGEEST, JOHN C | | | SCAC4 |
| 58 | WGJN | WRIGHT, JOHN | | | SCAC4 |
| 59 | WGLA | WOOJIN GLOBAL LOGISTICS USA | | | SCAC4 |
| 60 | WGLB | WEST GA LOGISTICS INC | | | SCAC4 |
| 61 | WGLD | WILLIAMS GOLD REFINING COMPANY OF C | | | SCAC4 |
| 62 | WGLL | WERNER GLOBAL LOGISTICS US LLC | | | SCAC4 |
| 63 | WGLQ | WITMER GLOBAL LOGISTICS INC | | | SCAC4 |
| 64 | WGLS | WESTERN LOGISTICS INC | | | SCAC4 |
| 65 | WGMA | WAGONMASTER TRANSPORTATION CO. | | | SCAC1 |
| 66 | WGMA | WAGONMASTER TRANSPORTATION CO | | | SCAC4 |
| 67 | WGMJ | WAGNER, M J TRUCKING | | | SCAC4 |
| 68 | WGMK | WRIGHT, MIKE TRUCKING | | | SCAC4 |
| 69 | WGMT | WAG-MAR TRANSPORT INC | | | SCAC4 |
| 70 | WGN | Western Global Airlines, LLC | IATA: KD, Callsign: Western Global, Name changed to Western Global Airlines, Inc. Received Part 121 AOC on 04 August 2014. Affiliated to Finnish carrier, Nordic Globa Air. | USA | AVCODES |
| 71 | WGN | Western Global Airlines, Inc. | IATA: KD, Callsign: Western Global, Name changed from Western Global Airlines, LLC. Received Part 121 AOC on 04 August 2014. Affiliated to Finnish carrier, Nordic Globa Air. | USA | AVCODES |
| 72 | WGNB | WAGNER BROKERAGE | | | SCAC4 |
| 73 | WGNE | WAGNER, LARRY W | | | SCAC4 |
| 74 | WGNI | WAUKEGAN CARTAGE, INC | | | SCAC1 |
| 75 | WGNK | WAGNER TRUCKING | | | SCAC4 |
| 76 | WGNP | WAGNER, E S | | | SCAC4 |
| 77 | WGNS | Wisconsin Great Northern R.R., Inc. | 7/2005 | | NAKINA |
| 78 | WGNS | WISCONSIN GREAT NORTHERN RAILROAD, INC. | | | PWRC |
| 79 | WGNS | WISCONSIN GREAT NORTHERN RAILROAD I | | | SCAC4 |
| 80 | WGNS | Wisconsin Great Northern R.R., Inc. | | USA | TRAFFIC |
| 81 | WGNU | WAY-GROUP LLC | | RUS | BIC |
| 82 | WGNX | WISCONSIN & GREAT NORTHERN RAILROAD, INC. | | | PWRC |
| 83 | WGNY | WALTERS, GLENN NURSERY INC | | | SCAC4 |
| 84 | WGNZ | WARRIOR & GULF NAVIGATION CO. | | | PWRC |
| 85 | WGOI | WALLACE GAS & OIL INC | | | SCAC4 |
| 86 | WGOT | WAGONEER TRANSPORTATION INCORPORATE | | | SCAC4 |
| 87 | WGP | Williams Grand Prix Racing Ltd. | Callsign: Grand Prix, Name changed to Williams Grand Prix Engineering Ltd. | GB | AVCODES |
| 88 | WGP | Williams Grand Prix Engineering Ltd. | Callsign: Grand Prix, Name changed from Williams Grand Prix Racing Ltd. | GB | AVCODES |
| 89 | WGP | Williams Grand Prix Engineering | | | ICAO1 |
| 90 | WGPK | WAGUESPACK OIL COMPANY INC | | | SCAC4 |
| 91 | WGR | Willamina & Grand Ronde Ry. Co. | added 4/1988; 1/1994-7/2000; eliminated 10/2003 | | NAKINA |
| 92 | WGR | Williamette Valley R.R. Co. | added 10/2003; 7/2005 | | NAKINA |
| 93 | WGR | Willamina & Grand Ronde Ry. Co. | added 4/88; 1/94-7/2000 | | NRHS |
| 94 | WGR | WILLIAMETTE VALLEY RAILWAY CO. [WILLAMINA & GRAND RONDE RAILWAY COMPANY, INC.] | | | PWRC |
| 95 | WGR | Willamina & Grand Ronde Railway | | | RSRV |
| 96 | WGRA | WAGNER, R A TRUCKING COMPANY INC | | | SCAC4 |
| 97 | WGRC | WAGGONERS, INC. | | | SCAC4 |
| 98 | WGRH | Western Greyhound | | GB | TRAFFIC |
| 99 | WGRI | WIGGERS FARMS | | | SCAC4 |
| 100 | WGRN | WALTERS GRAIN AND SUPPLY INC | | | SCAC4 |
