| 1 | WA | KLM Cityhopper B.V. (KLM Commuter) | ICAO: KLC, Callsign: City, IATA designator changed from HN / ICAO desigantor changed from NLM | NL | AVCODES |
| 2 | WA | Wings Aviation Limited t/a Air guyana | ICAO: WOL, Callsign: Wingjet, | GUY | AVCODES |
| 3 | WA | Western Airlines, Inc. | ICAO: WAL, Callsign: Western, Merged into Delta Air Lines | USA | AVCODES |
| 4 | WA | KLM Cityhopper | ICAO: KLC, Callsign: City, Name changed from KLM Cityhopper B.V. (KLM Commuter). IATA designator changed from HN / ICAO desigantor changed from NLM | NL | AVCODES |
| 5 | WA | The Western Ry. of Alabama | 1/1975-1/1980; eliminated 1/1983 | | NAKINA |
| 6 | WA | Seaboard System R.R., Inc. | added 1/1983; eliminated 7/1987 | | NAKINA |
| 7 | WA | CSX Transportation, Inc. | added 7/1987; 1/1994-7/2005 | | NAKINA |
| 8 | WA | The Western Ry. of Alabama | 1/75-1/80; eliminated 1/83 | | NRHS |
| 9 | WA | Seaboard System R.R., Inc. | added 1/83; eliminated 7/87 | | NRHS |
| 10 | WA | CSX Transportation, Inc. | added 7/87; 1/94-7/2000 | | NRHS |
| 11 | WA | CSX TRANSPORTATION, INC. [(SEABOARD) WESTERN RAILWAY OF ALABAMA] | | | PWRC |
| 12 | WA | Western Railway of Alabama (CSX Transportation) | | | RSRV |
| 13 | WA | The Western Railway of Alabama | | USA | TRAFFIC |
| 14 | WAA | Westair Aviation (Pty) Ltd. | IATA: WV, Callsign: Westair Wings, IATA Accounting code 614 recalled. | NAM | AVCODES |
| 15 | WAA | Westair Aviation | | | ICAO1 |
| 16 | WAAL | WALTH, ALLEN | | | SCAC4 |
| 17 | WAAR | WALTERS, J ENT LTD | | | SCAC4 |
| 18 | WAB | Aero Industries, Inc. | Callsign: Wabash, | USA | AVCODES |
| 19 | WAB | Aero Industries Inc | | | ICAO1 |
| 20 | WAB | Wabash R.R. | 10/1957-7/1965 | | NAKINA |
| 21 | WAB | Wabash R.R. Co. (Norfolk and Western Ry. Co.) | 10/1966-4/1970 | | NAKINA |
| 22 | WAB | Norfolk and Western Ry. Co. | 1/1975-1/1980; eliminated 1/1991 | | NAKINA |
| 23 | WAB | Norfolk Southern Ry. Co. | added 1/1991; 1/1994-7/2000 | | NAKINA |
| 24 | WAB | Norfolk Southern Ry. Co. (Norfolk Southern) | 7/2005 | | NAKINA |
| 25 | WAB | Wabash R.R. | 10/57-7/65 | | NRHS |
| 26 | WAB | Wabash R.R. Co. (Norfolk and Western Ry. Co.) | 10/66-4/70 | | NRHS |
| 27 | WAB | Norfolk and Western Ry. Co. | 1/75-1/80; eliminated 1/91 | | NRHS |
| 28 | WAB | Norfolk Southern Ry. Co. | added 1/91; 1/94-7/2000 | | NRHS |
| 29 | WAB | Westfälische Almetalbahn GmbH | Altenbeken | D | privat-bahn.de |
| 30 | WAB | NORFOLK SOUTHERN RAILWAY COMPANY [NORFOLK & WESTERN RWY.; WABASH RR] | | | PWRC |
| 31 | WAB | Wabash Railroad (Norfolk Southern) | | | RSRV |
| 32 | WAB | Wengernalpbahn | | CH | TRAFFIC |
| 33 | WAB | Westfälische Almetalbahn | | DE | VKM |
| 34 | WABA | Waldbahn Almetal e.V. | | DE | VKM |
| 35 | WABB | WALTERS INC | | | SCAC4 |
| 36 | WABC | ABC LINES | | | PWRC |
| 37 | WABC | W S TRANSPORTATION | | | SCAC4 |
| 38 | WABD | Westfälische Almetalbahn | Real: WAB | D | TRAFFIC |
| 39 | WABF | WALGATE, WENDY | | | SCAC4 |
| 40 | WABI | WARWICK ORCHARDS & NURSERY LTD | | | SCAC4 |
| 41 | WABM | WABASH MFG INC | | | SCAC4 |
| 42 | WABN | WALBON AND COMPANY INC | | | SCAC4 |
| 43 | WABP | WADE, GARY TRUCKING | | | SCAC4 |
| 44 | WABR | Wabash Railroad | Real: WAB | USA | TRAFFIC |
| 45 | WABS | WARDANE ENTERPRISES INC | | | SCAC4 |
| 46 | WABT | WALNUT HILL TRANSPORT | | | SCAC4 |
| 47 | WABU | HOYER GMBH | | D | BIC |
| 48 | WABU | HOYER GMBH | | | SCAC4 |
| 49 | WABX | Westinghouse Air Brake Co. | 7/1923 | | NAKINA |
| 50 | WABX | WESTINGHOUSE AIR BRAKE CO. (WABCO) | | | PWRC |
| 51 | WABZ | WTL RAIL CORPORATION | | | PWRC |
| 52 | WABZ | WTL Rail Corporation | | | RSRV |
| 53 | WABZ | WTL RAIL CORPORATION | | | SCAC4 |
| 54 | WAC | World Air Network Co., Ltd. | Callsign: Wing Ace, Name changed to Air Japan Co. Ltd. ICAO designator changed to AJX. ICAO callsign changed to Air Japan | J | AVCODES |
| 55 | WAC | West African Cargo Airlines Sarl | Callsign: Westaf Cargo, | RIM | AVCODES |
| 56 | WAC | West African Cargo Airlines | | | ICAO1 |
| 57 | WACD | WATER SPIRIT FREIGHT | | | SCAC4 |
| 58 | WACF | WALDHEIM COLONY FARMS LTD | | | SCAC4 |
| 59 | WACG | WEST ATLANTIC CARGO LEASING & SERVI | | | SCAC4 |
| 60 | WACH | WASHINGTON CARRIERS INC | | | SCAC4 |
| 61 | WACK | WACEK INC | | | SCAC4 |
| 62 | WACL | WESTCHEM AGRICULTURAL CHEMICALS INC | | | SCAC4 |
| 63 | WACN | WALKER CRANE & RIGGING CORP | | | SCAC4 |
| 64 | WACO | WHITE, A C TRANSFER & | | | SCAC4 |
| 65 | WACQ | WANDERING FIRE POTTERY & TILE WORKS | | | SCAC4 |
| 66 | WACR | Washington County R.R. Corp. | added 4/1981; 1/1994; eliminated 7/1997; 7/2000-7/2005 | | NAKINA |
| 67 | WACR | Washington County R.R. Corp. | added 4/81; 1/94; eliminated 7/97; 7/2000 | | NRHS |
| 68 | WACR | WASHINGTON COUNTY RAILROAD CORPORATION | | | PWRC |
| 69 | WACR | Washington County Railroad | | | RSRV |
| 70 | WACT | WACONIA TRANSPORT COMPANY INC | | | SCAC4 |
| 71 | WACV | WHITE, A C MOVING SYSTEMS INC | | | SCAC4 |
| 72 | WACW | WANDERING ANGUS CELTIC TRADERS | | | SCAC4 |
| 73 | WACX | Albright & Wilson Co. | added 4/1990; 1/1994-7/2000; eliminated 10/2003 | | NAKINA |
| 74 | WACX | PCS Phosphate Co. | added 10/2003; 7/2005 | | NAKINA |
| 75 | WACX | Albright & Wilson Company | added 4/90; 1/94-7/2000 | | NRHS |
| 76 | WACX | *WILLARD AGRICULTURAL COMPANY | | | PWRC |
| 77 | WACX | +PCS PHOSPHATE COMPANY INCORPORATED [ALBRIGHT & WILSON COMPANY] | | | PWRC |
| 78 | WACX | Willard Agricultural Co. (PCS Phosphate) | | | RSRV |
| 79 | WACX | PCS PHOSPHATE COMPANY INC | | | SCAC4 |
| 80 | WAD | Waddington FTU | Callsign: Vulcan, | GB | AVCODES |
| 81 | WAD | Waddington FTU | | | ICAO1 |
| 82 | WADC | WHEELS ASSURED DELIVERY SYSTEMS INC | | | SCAC4 |
| 83 | WADE | WADE ENVIRONMENTAL | | | SCAC4 |
| 84 | WADE | Wade Tours | | USA | TRAFFIC |
| 85 | WADF | WAYNES CUSTOM WOODCRAFT LTD | | | SCAC4 |
| 86 | WADG | WADE TRUCKING INC | | | SCAC4 |
| 87 | WADK | WOLLMANN, ALBERT | | | SCAC4 |
| 88 | WADR | WADDELL TRANSPORT LIMITED | | | SCAC4 |
| 89 | WADS | WADSWORTH&REILLY EXPRESS, INC | | | SCAC1 |
| 90 | WADS | WADSWORTH AND REILLY EXPRESS INC | | | SCAC4 |
| 91 | WADX | The Wadley Co. | 7/1930-7/1932 | | NAKINA |
| 92 | WADX | The Wadley Co. (Harbor Tank Line) | 7/1935 | | NAKINA |
| 93 | WADX | American Refrigerator Transit Co. | added 7/1955; 10/1957-1/1975; eliminated 10/1975; 1/1980 | | NAKINA |
| 94 | WADX | American Refrigerator Transit Co. | added 7/55; 10/57-1/80 | | NRHS |
| 95 | WADX | *WADLEY CO. | | | PWRC |
| 96 | WADX | *AMERICAN REFRIGERATOR TRANSIT CO. | | | PWRC |
| 97 | WADZ | WATKINS DISTRIBUTION | | | PWRC |
| 98 | WAE | Western Air Express | Callsign: Western Express, | USA | AVCODES |
| 99 | WAE | Western Air Express | | | ICAO1 |
| 100 | WAER | Wabash & Erie R.R. | added 1/1995; eliminated 4/1995; 7/2000-7/2005 | | NAKINA |
