| 1 | 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 |
| 2 | WAC | West African Cargo Airlines Sarl | Callsign: Westaf Cargo, | RIM | AVCODES |
| 3 | WAC | West African Cargo Airlines | | | ICAO1 |
| 4 | WACD | WATER SPIRIT FREIGHT | | | SCAC4 |
| 5 | WACF | WALDHEIM COLONY FARMS LTD | | | SCAC4 |
| 6 | WACG | WEST ATLANTIC CARGO LEASING & SERVI | | | SCAC4 |
| 7 | WACH | WASHINGTON CARRIERS INC | | | SCAC4 |
| 8 | WACK | WACEK INC | | | SCAC4 |
| 9 | WACL | WESTCHEM AGRICULTURAL CHEMICALS INC | | | SCAC4 |
| 10 | WACN | WALKER CRANE & RIGGING CORP | | | SCAC4 |
| 11 | WACO | WHITE, A C TRANSFER & | | | SCAC4 |
| 12 | WACQ | WANDERING FIRE POTTERY & TILE WORKS | | | SCAC4 |
| 13 | WACR | Washington County R.R. Corp. | added 4/1981; 1/1994; eliminated 7/1997; 7/2000-7/2005 | | NAKINA |
| 14 | WACR | Washington County R.R. Corp. | added 4/81; 1/94; eliminated 7/97; 7/2000 | | NRHS |
| 15 | WACR | WASHINGTON COUNTY RAILROAD CORPORATION | | | PWRC |
| 16 | WACR | Washington County Railroad | | | RSRV |
| 17 | WACT | WACONIA TRANSPORT COMPANY INC | | | SCAC4 |
| 18 | WACV | WHITE, A C MOVING SYSTEMS INC | | | SCAC4 |
| 19 | WACW | WANDERING ANGUS CELTIC TRADERS | | | SCAC4 |
| 20 | WACX | Albright & Wilson Co. | added 4/1990; 1/1994-7/2000; eliminated 10/2003 | | NAKINA |
| 21 | WACX | PCS Phosphate Co. | added 10/2003; 7/2005 | | NAKINA |
| 22 | WACX | Albright & Wilson Company | added 4/90; 1/94-7/2000 | | NRHS |
| 23 | WACX | *WILLARD AGRICULTURAL COMPANY | | | PWRC |
| 24 | WACX | +PCS PHOSPHATE COMPANY INCORPORATED [ALBRIGHT & WILSON COMPANY] | | | PWRC |
| 25 | WACX | Willard Agricultural Co. (PCS Phosphate) | | | RSRV |
| 26 | WACX | PCS PHOSPHATE COMPANY INC | | | SCAC4 |
