| Abbreviation | Definition |
|---|---|
| WAER | Wabash and Erie Railroad |
| WAFX | Western Ash |
| WAFX | Western Ash Company |
| WAG | Wellsville, Addison and Galeton Railroad |
| WAGN | West Anglia Great Northern Railroad (National Express Group) |
| WAGR | Western Australian Government Railways |
| WAGX | PCS Phosphate Company Incorporated |
| WAGX | Willard Agricultural Co. (PCS Phosphate) |
| WAJ | WAFFA: A language of Papua New Guinea |
| WAJU | Elder Dempster Lines Nigerian National Line |
| WAKX | Wake Partnership |
| WAL | Western Allegheny Railroad |
| WAMR | Waupaca Area Model Railroaders |
| WAMR | William Allnutt Model Railways |
| WAMX | Webb Asset Management |
| WAMX | Webb Asset Management subisidiary of Louisiana Rail |
| WAND | Wisconsin and Michigan Railway |
| WAND | Wisconsin and Michigan Railway Company |
| WAPU | Total Storage |
| WAR | Warrenton Railroad |