| Abbreviation | Definition |
|---|---|
| TPCG | Terrebonne Parish Consolidated Government |
| TPH | Trust, Pride, and Honesty |
| TPIF | Transportation Permanent Improvement Fund |
| TPJ | Terryville - Port Jefferson |
| TPL | Tax Policy Library |
| TPSP | Tax Prepaid Savings Plan |
| TPT | Tobacco Products Tax |
| TPW | Texas Parks and Wildlife |
| TPZ | Town Planning and Zoning Commission |
| TRAG | Towing and Recovery Association of Georgia |
| TRAIL | Texas Records And Information Locator Service |
| TRC | Texas Railroad Commission |
| TRC | Texas Railroad Commission (became RCT) |
| TRD | Taxation and Revenue Department |
| TREAD | Transportation Reporting Enhancement Accountability and Documentation |
| TREF | Tennessee Registry of Election Finance |
| TRG | Tye River Gap |
| TRHI | Tennessee Rural Health Insurance |
| Tribeca | Triangle Below Canal |
| TRJ | Three Rivers Junction |