| Abbreviation | Definition |
|---|---|
| WCLR | Waccamaw Coast Line Railroad Company |
| WCLR | Waccamaw Coastline Locomotive Roster |
| WCLU | Orient Overseas Line |
| WCLU | Orient Overseas Line Incorporated |
| WCLX | Wisconsin Central Transportation |
| WCLZ | Wisconsin Central Limited |
| WCOR | Wellsboro and Corning Railroad |
| WCOR | Wellsboro and Corning Railroad Company |
| WCQ | Wisconsin Central Limited |
| WCR | Waterville and Caherdaniel Railway |
| WCR | West Central Railway |
| WCR | West Coast Railway |
| WCR | Whitecoast City Railway |
| WCRC | Columbia Basin Railroad Company (formerly Washington Central Railroad Company) |
| WCRC | Washington Central Railroad |
| WCRL | West Chester Railroad |
| WCRL | West Chester Railroad Company |
| WCRM | West Coast Route Modernization |
| WCRR | Washington Country Railroad |
| WCRR | White Creek Railroad |