| 201 | WAHA | WAHA THOMAS TRUCKING INC | | | SCAC4 |
| 202 | WAHK | WAHL, A, A., TRUCKING | | | SCAC1 |
| 203 | WAHL | WAHLIES CUSTOM TRUCKING(DIV OF CONN | | | SCAC4 |
| 204 | WAHO | WAHO TRANSPORT LTD | | | SCAC4 |
| 205 | WAI | Air Greco International | IATA: WV, | USA | AVCODES |
| 206 | WAI | Wings Air | Callsign: Bushwood, | USA | AVCODES |
| 207 | WAIBEL | Waibel Bus GmbH | | D | TRAFFIC |
| 208 | WAIC | WORLDWIDE ALLIANCE INC | | | SCAC4 |
| 209 | WAIN | Wain Railway | | FAN | TRAFFIC |
| 210 | WAIQ | WITMEYER & ASSOCIATES INC | | | SCAC4 |
| 211 | WAIT | WAITT TRUCKING INC | | | SCAC4 |
| 212 | WAIV | WHISLER AVIATION INC | | | SCAC4 |
| 213 | WAIW | WA I L P | | | SCAC4 |
| 214 | WAJ | AirAsia Japan Co., Ltd. | IATA: JW, Callsign: Wing Asia, Name changed to Vanilla Air w.e.f. 01 November 2013. Joint venture between Malaysia's AirAsia and Japan's All Nippon Airways. | J | AVCODES |
| 215 | WAJ | AirAsia Japan Co., Ltd. | IATA: DJ, Callsign: Wing Asia, | J | AVCODES |
| 216 | WAJ | Air Asia Japan | | J | TRAFFIC |
| 217 | WAJL | WESLEY, A J TRANSPORT LLC | | | SCAC4 |
| 218 | WAJO | WALJON INDUSTRIES LTD | | | SCAC4 |
| 219 | WAJU | ELDER DEMPSTER LINES NIGERIAN NATIONAL LINE | | | PWRC |
| 220 | WAJU | Elder Dempster Lines Nigerian National Line | | | RSRV |
| 221 | WAK | Alaska Juneau Aeronautics Inc d/b/a Wings Of Alaska | IATA: K5, Callsign: Wings Alaska, Name changed to SeaPort Airlines, Inc. dba Wings of Alaska | USA | AVCODES |
| 222 | WAK | SeaPort Airlines, Inc. dba Wings of Alaska | IATA: K5, Callsign: Wings Alaska, Name changed from Alaska Juneau Aeronautics Inc d/b/a Wings Of Alaska. Acquired by SeaPort Airlines in 2008 | USA | AVCODES |
| 223 | WAK | Fjord Flying Services dba Wings of Alaska | Callsign: Wings Alaska, Name changed from SeaPort Airlines, Inc. dba Wings of Alaska. Acquired from SeaPort Airlines in 2015. | USA | AVCODES |
| 224 | WAK | Wings of Alaska | IATA: K5 | | ICAO1 |
| 225 | WAK | Wakayama Electric Railway | | J | TRAFFIC |
| 226 | WAKAS | Wakasugi Kanko Bus Co. | | J | TRAFFIC |
| 227 | WAKJ | WALKER, JACK OIL CO INC | | | SCAC4 |
| 228 | WAKS | WANNAMAKERS, KEMPTON & SOUTHERN | | | PWRC |
| 229 | WAKS | Wakasa Railway | | J | TRAFFIC |
| 230 | WAKX | Wake Partnership | added 4/1993; 1/1994-7/2005; eliminated 7/2008; eliminated 10/2008 | | NAKINA |
| 231 | WAKX | Wake Partnership | added 4/93; 1/94-7/2000 | | NRHS |
| 232 | WAKX | WAKE PARTNERSHIP | | | PWRC |
| 233 | WAKX | Wake Partnership | | | RSRV |
| 234 | WAL | Western Arctic Air Ltd. | Callsign: Western Arctic, Formerly Antler Aviation Ltd. | CDN | AVCODES |
| 235 | WAL | Western Airlines, Inc. | IATA: WA, Callsign: Western, Merged into Delta Air Lines | USA | AVCODES |
| 236 | WAL | Caribbean Sun Airlines, Inc. d/b/a World Atlantic Airlines | IATA: K8, Callsign: World Atlantic, Designator K8* recalled by IATA. Name changed from Caribbean Sun Airlines, Inc | USA | AVCODES |
| 237 | WAL | Caribbean Sun Airlines, Inc. d/b/a World Atlantic Airlines | IATA: WL, Callsign: World Atlantic, IATA Prefix: 527, Designator K8* recalled by IATA. Name changed from Caribbean Sun Airlines, Inc | USA | AVCODES |
| 238 | WAL | Western Airlines | IATA: WA | | ICAO1 |
| 239 | WAL | Western Arctic Air | | | ICAO1 |
| 240 | WAL | Western Allegheny R.R. Co. | 1/1975-1/1980 | | NAKINA |
| 241 | WAL | Western Allegheny R.R. Co. | 1/75-1/80 | | NRHS |
| 242 | WAL | WESTERN ALLEGHENY RAILROAD | | | PWRC |
| 243 | WAL | Western Allegheny Railroad | | | RSRV |
| 244 | WALB | MPK Wałbrzych | City: Wałbrzych | PL | TRAFFIC |
| 245 | WALC | WALLACE, R D OIL CO INC | | | SCAC4 |
| 246 | WALH | WALHALLA BEAN COMPANY | | | SCAC4 |
| 247 | WALL | WALL TRUCK LINE INC | | | SCAC4 |
| 248 | WALM | WAL-MART TRANSPORTATION LLC | | | SCAC4 |
| 249 | WALO | WALSHS OIL COMPANY | | | SCAC4 |
| 250 | WALP | WRIGHTMAN ALPINES | | | SCAC4 |
| 251 | WALQ | WALL TRUCKING | | | SCAC4 |
| 252 | WALR | WALLER TRUCK CO INC | | | SCAC4 |
| 253 | WALSC | Walsall Corporation | | GB | TRAFFIC |
| 254 | WALT | WALLACE TRUCKING | | | SCAC4 |
| 255 | WALU | EUROCONDAL SHIPPING SA | | | SCAC4 |
| 256 | WALV | WALTRANS INC | | | SCAC4 |
| 257 | WALZ | WABASH ALLOY | | | PWRC |
| 258 | WAM | West African Air Services | Callsign: Westair Mail, | RMM | AVCODES |
| 259 | WAM | Westair de Mexico | Callsign: Westair, | MEX | AVCODES |
| 260 | WAM | Air Taxi & Cargo | | SUD | AVCODES |
| 261 | WAM | Air Taxi & Cargo | | | ICAO1 |
| 262 | WAMA | WUNDERLICH AMERICA | | | SCAC4 |
| 263 | WAMG | WARD MOVING & STORAGE OF MINOT INC | | | SCAC4 |
| 264 | WAMI | WELLES, A M INC | | | SCAC4 |
| 265 | WAMM | W A M TRANSPORTATION INC | | | SCAC4 |
| 266 | WAMX | Webb Asset Management | 7/2000-7/2005 (not listed); added 4/2006 | | NAKINA |
| 267 | WAMX | Webb Asset Management | Jul-00 | | NRHS |
| 268 | WAMX | WEBB ASSET MANAGEMENT | | | PWRC |
| 269 | WAMX | Webb Asset Management | | | RSRV |
| 270 | WAMX | Webb Asset Management | | USA | TRAFFIC |
| 271 | WAN | Wane Aviation Ltd. | Callsign: Wane Kenya, | EAK | AVCODES |
| 272 | WAN | Kuwait National Airways (K.C.S.) t/a Wataniya Airways | IATA: KW, Callsign: Wataniya, IATA Prefix: 100, Ceased operations on 16 March 2011. Name changed from Kuwait National Airways | KWT | AVCODES |
| 273 | WAN | Inselbahn Wangerooge | | D | TRAFFIC |
| 274 | WANC | WALINGA INC | | | SCAC4 |
| 275 | WAND | Wisconsin & Michigan Ry. Co. | added 10/1992; 1/1994; eliminated 1/1997; 7/2000-7/2005 | | NAKINA |
| 276 | WAND | Wisconsin & Michigan Ry. Co. | added 10/92; 1/94; eliminated 1/97; 7/2000 | | NRHS |
| 277 | WAND | WISCONSIN & MICHIGAN RAILWAY COMPANY | | | PWRC |
| 278 | WAND | Wisconsin and Michigan Railway | | | RSRV |
| 279 | WAND | WISCONSIN & MICHIGAN RAILWAY COMPAN | | | SCAC4 |
| 280 | WANDT | Wandt Transport | | D | TRAFFIC |
| 281 | WANG | WANGERIN TRUCKING COMPANY INC | | | SCAC4 |
| 282 | WANH | WAGNER, HARLAN TRUCKING | | | SCAC4 |
| 283 | WANI | WAN INDUSTRIAS S A DE C V | | | SCAC4 |
| 284 | WANL | WEBBER, A N LOGISTICS INC | | | SCAC4 |
| 285 | WANW | WANNER WELL SERVICING | | | SCAC4 |
| 286 | WAOI | WACASTER OIL CO INC | | | SCAC4 |
| 287 | WAOL | WALNOS STEAMSHIP LINES | | | SCAC4 |
| 288 | WAOS | WALGREEN OSHKOSH INC | | | SCAC4 |
| 289 | WAP | Arrow Panama, S.A. | IATA: 8A, Callsign: Arrow Panama, Ceased operations | PA | AVCODES |
| 290 | WAP | Arrow Panama | | | ICAO1 |
| 291 | WAPF | WIEBE, ALBERT P FARMS INC | | | SCAC4 |
| 292 | WAPG | WESCOTT A | | | SCAC4 |
| 293 | WAPP | WAPPEN-REED | | | SCAC4 |
| 294 | WAPU | Total Storage | | | RSRV |
| 295 | WAPU | TOTAL STORAGE LTD | | | SCAC4 |
| 296 | WAPX | Willits & Patterson | 8/1920 | | NAKINA |
| 297 | WAPX | WILLITS & PATTERSON | | | PWRC |
| 298 | WAQE | WAQEEA LOGISTICS INC | | | SCAC4 |
| 299 | WAQT | WHITE TRANS INC | | | SCAC4 |
| 300 | WAR | NZ Warbirds Association, Inc. | Callsign: Warbirds, | NZ | AVCODES |
