| 1 | WAT | Wings Air Transport Co. | | SUD | AVCODES |
| 2 | WAT | Wings Air Transport | | | ICAO1 |
| 3 | WATA | Watarase Keikoku Railway | | J | TRAFFIC |
| 4 | WATC | The Washington Terminal Co. | 1/1975-7/2005 | | NAKINA |
| 5 | WATC | The Washington Terminal Co. | 1/75-7/2000 | | NRHS |
| 6 | WATC | WASHINGTON TERMINAL CO. | | | PWRC |
| 7 | WATC | Washington Terminal | | | RSRV |
| 8 | WATC | WATSON TRUCKING | | | SCAC4 |
| 9 | WATC | Washington Terminal Company | | USA | TRAFFIC |
| 10 | WATCHUNG | Watchung Mountain Transit | | USA | TRAFFIC |
| 11 | WATCO | Watco Australia | | AUS | TRAFFIC |
| 12 | WATD | WASHINGTON TRUCK DISPATCH | | | SCAC4 |
| 13 | WATE | WATERSTONE PRODUCTS LTD | | | SCAC4 |
| 14 | WATH | WALTHALL OIL COMPANY | | | SCAC4 |
| 15 | WATI | WASHINGTON TRUCKING INC | | | SCAC4 |
| 16 | WATJ | WATSON TRANSPORTATION COMPANY | | | SCAC4 |
| 17 | WATK | WALTERS TRUCKING INC | | | SCAC4 |
| 18 | WATM | WATTS PETROLEUM CORP | | | SCAC4 |
| 19 | WATO | WATSON OIL COMPANY | | | SCAC4 |
| 20 | WATP | WAREHOUSE TRANSPORT SERVICES INC | | | SCAC4 |
| 21 | WATR | Waterville | 1/1975-1/1980 | | NAKINA |
| 22 | WATR | Water Carriers | 1/1994-7/2005 | | NAKINA |
| 23 | WATR | Waterville | 1/75-1/80 | | NRHS |
| 24 | WATR | Water Carriers | 1/94-7/2000 | | NRHS |
| 25 | WATR | *WATERVILLE RY. | | | PWRC |
| 26 | WATR | +WATER CARRIERS (CSD) | | | PWRC |
| 27 | WATR | Waterville Railroad | | | RSRV |
| 28 | WATS | WALSH TRUCKING SERVICE, INC | | | SCAC1 |
| 29 | WATS | WALSH TRUCKING SERVICE, INC | | | SCAC4 |
| 30 | WATT | WATT TRANSPORT INC | | | PWRC |
| 31 | WATT | WATT AND STEWART COMMODITIES INC | | | SCAC4 |
| 32 | WATU | WATERMAN STEAMSHIP CORPORATION | | | SCAC1 |
| 33 | WATU | WATERMAN STEAMSHIP CORP | | | SCAC4 |
| 34 | WATX | *WATAUGA VALLEY CHAPTER OF THE NTL. RWY. HISTORICAL SOC. | | | PWRC |
| 35 | WATX | *WATCO | | | PWRC |
| 36 | WATX | WATAUGA VALLEY CHAPTER OF THE NTL. | | | SCAC4 |
| 37 | WATZ | WESTERN AUTO | | | PWRC |
| 38 | WATZ | Western Auto | | | RSRV |
| 39 | WATZ | WESTERN AUTO | | | SCAC4 |
| 40 | WATZKE | Watzke GmbH | Teil der Dr. Richerd Firmengruppe | A | TRAFFIC |
