| 1 | WCX | Warner Chemical Co. | 7/1930-7/1935 | | NAKINA |
| 2 | WCX | Wyandotte Chemicals Corp. | 1/1946 (not listed); 4/1947-1/1950; 1/1952 (not listed) | | NAKINA |
| 3 | WCX | Western Chemicals Ltd. | added 10/1954; 10/1957; eliminated 1/1960 | | NAKINA |
| 4 | WCX | Wyandotte Chemicals Corp. | Jan-52 | | NRHS |
| 5 | WCX | Western Chemicals Ltd. | 10/57; eliminated 1/60 | | NRHS |
| 6 | WCX | WESTERN CHEMICALS LTD. [WYANDOTTE CHEMICALS CORP.; WARNER CHEMICAL CO.] | | | PWRC |
| 7 | WCXC | WC TRANSPORT SERVICES INC | | | SCAC4 |
| 8 | WCXE | WEST COAST INDUSTRIAL EXPRESS | | | SCAC4 |
| 9 | WCXI | W C TRANSPORT INC | | | SCAC4 |
| 10 | WCXN | WALLACE TRANSPORTATION | | | SCAC4 |
| 11 | WCXO | WILCOX OIL CO INC | | | SCAC4 |
| 12 | WCXR | WEST COAST EXPRESS | | | SCAC4 |
| 13 | WCXS | WEST COAST XPRESS | | | SCAC4 |
| 14 | WCXU | WEC LINES BV | | NL | BIC |
| 15 | WCXU | WEC LINES | | | SCAC4 |
| 16 | WCXX | West Coast Railway Museum | 7/2005 (not listed) | | NAKINA |
| 17 | WCXX | WEST COAST RAILWAY ASSOCIATION (WEST COAST RAILWAY MUSEUM) | | | PWRC |
| 18 | WCXX | WEST COAST RAILWAY ASSOCIATION | | | SCAC4 |
