D
| Railway name | Locale | Operating years | Comments |
|---|---|---|---|
| Detroit River Tunnel Company | Subsidiary of CASO/MCRR. | ||
| Dominion Atlantic Railway | western Nova Scotia | 1894–1994 | Acquired by CPR in 1912, after 1988 was operated as part of CAR. Sold to become WHRC. |
| Dominion Coal Company | |||
| Dominion Timber and Minerals Railway | Laurentian Mountains (Western Quebec) Kilmar, Black Lake, Lachute, Marlean | 1916-1981 | Subsidiary of CRL. |
Read more about this topic: List Of Defunct Canadian Railways