| Abbreviation | Definition |
|---|---|
| TGH | The Gyro House |
| TGIF | There Go I Fearfully |
| TGIS | Transportation Geographic Information Section |
| TGIS | Transportation Geospatial Information System |
| TGL | Touch And Go Landing |
| TGM | Transportation and Growth Management |
| TGV | Train a Grande Vitesse |
| TGWU | Transport and General Workers' Union |
| TH | Threshold |
| TH | Town Highway |
| THAAT | THAAT The Hammer Active Alternative Transportation |
| THAB | Transportation Hearing Appeals Board |
| THC | Terminal Handling Charges |
| THC | The Hell Cycle |
| THF | Transmission Hydraulic Fluid |
| THS | Territorial Highway System |
| THS | Toyota Hybrid System |
| THT | Top Hand Torque |
| THTC | Transportation Heritage and Technology Centre |
| THU | Twin Hydropulsion Units |