| Abbreviation | Definition |
|---|---|
| TVA | TVA Group, Incorporated |
| TVI | TVI Pacific Inc. |
| TVI | TVI Pacific, Incorporated |
| TWF | TimberWest Forest Corp. |
| TWF | TimberWest Forest Corporation |
| TWT | 20-20 Technologies Inc. |
| TWT | 20-20 Technologies Incorporated |
| TXL | Tesla Exploration Ltd. |
| TXL | Tesla Exploration, LTD. |
| TXT | Top 10 Split Trust |
| TZT | Tranzeo Wireless Technologies Inc. |
| TZT | Tranzeo Wireless Technologies Incorporated |
| U | Uranium Participation Corporation |
| UF | Uranium Focused Energy Fund |
| UFS | Domtar Corporation |
| UFX | Domtar (Canada) Paper Inc. |
| UFX | Domtar Canada Paper, Incorporated (de-listed) |
| UFX | Domtar Canada Paper, Incorporated (de-listed) |
| UMG | United Mining Group, Inc. |
| UMG | United Mining Group, Incorporated |