| 1 | WAG | Wisconsin Air National Guard | | USA | AVCODES |
| 2 | WAG | Wisconsin Air National Guard | | | ICAO1 |
| 3 | WAG | Wellsville, Addison & Galeton R.R. Corp. | 10/1957-1/1980; eliminated 4/1980 | | NAKINA |
| 4 | WAG | Wellsville, Addison & Galeton R.R. Corp. | 10/57-1/80; eliminated 4/80 | | NRHS |
| 5 | WAG | WELLSVILLE, ADDISON & GALETON RAILROAD CORP. | | | PWRC |
| 6 | WAG | Wellsville, Addison and Galeton Railroad | | | RSRV |
| 7 | WAG | Wellsville, Addison and Galeton Railroad | | USA | TRAFFIC |
| 8 | WAG | Westfalen Aktiengesellschaft | | DE | VKM |
| 9 | WAGA | AGRA/AUROBON | | | PWRC |
| 10 | WAGH | WEST ATLANTIC LOGISTICS CORP | | | SCAC4 |
| 11 | WAGL | WALGREEN CO | | | SCAC4 |
| 12 | WAGN | WAGNER FREIGHT LINES, INC | | | SCAC1 |
| 13 | WAGN | WAGNER FREIGHT LINES, INC | | | SCAC4 |
| 14 | WAGN | West Anglia Great Northern Railway Ltd. | | GB | TRAFFIC |
| 15 | WAGN | West Anglia Great Northern Railway | | UK | VKM |
| 16 | WAGP | WAGGONERS TRUCKING | | | SCAC1 |
| 17 | WAGP | WAGGONERS TRUCKING, THE | | | SCAC4 |
| 18 | WAGR | WAGLER, LARRY | | | SCAC4 |
| 19 | WAGR | Westrail | | AUS | TRAFFIC |
| 20 | WAGT | WAGNER TRUCKING INC | | | SCAC4 |
| 21 | WAGU | WESTFALEN AG | | D | BIC |
| 22 | WAGU | WESTFALEN AG | | | SCAC4 |
| 23 | WAGX | Occidental Chemical Corp. | added 10/1995; eliminated 4/1996 | | NAKINA |
| 24 | WAGX | PCS Phosphate Co., Inc. | added 4/1996; 7/2000-7/2005 | | NAKINA |
| 25 | WAGX | Occidental Chemical Corp. | added 10/95; eliminated 4/96 | | NRHS |
| 26 | WAGX | PCS Phosphate Co., Inc. | added 4/96; 7/2000 | | NRHS |
| 27 | WAGX | PCS PHOSPHATE COMPANY INC. [OCCIDENTAL CHEMICAL CORP.] | | | PWRC |
| 28 | WAGX | Willard Agricultural Co. (PCS Phosphate) | | | RSRV |
| 29 | WAGX | WHITE SPRINGS AGRICULTURAL CHEMICAL | | | SCAC4 |
