T
| Railway name | Locale | Operating years | Comments |
|---|---|---|---|
| Temiscouata Railway | eastern Quebec, northwestern New Brunswick | 1870–1949 | Acquired by CNR. |
| Terra Transport | Newfoundland | 1977–1988 | Division of CN. Abandoned. |
| Thousand Islands Railway | Acquired by GTR. | ||
| Thurso and Nation Valley Railway | Subsidiary of SC. | ||
| Temiskaming and Northern Ontario Railway | northeastern Ontario | 1902–1946 | Renamed to ONR. |
| Tillsonburg Lake Erie and Pacific Railway | Acquired by CPR. | ||
| Toronto, Grey and Bruce Railway | south-west Ontario | 1871–1883 | Acquired by O&Q. |
| Toronto and Nipissing Railway | south-central Ontario | 1871–1883 | Amalgamated into Midland Railway of Canada. |
| Toronto, Hamilton and Buffalo Railway | southwestern Ontario | 1892–1987 | Acquired by CPR. |
| Toronto Suburban Railway | Acquired by CNoR. |
Read more about this topic: List Of Defunct Canadian Railways