| Abbreviation | Definition |
|---|---|
| TNN | The Navajo Nation |
| TNR | True Non-Resident |
| TOC | Treaty Operations Center |
| TOE | Temporarily Official Employment |
| TONA | Titles of Nobility Amendment |
| TOP | Technology Opportunities Program |
| TOT | Trail Of Tears |
| TOT | Transient Occupancy Tax |
| TOT | Turn(ed) over to: |
| TP | Technical Provision |
| TP | Termination Power |
| TP | Trade Policy |
| TP | Twin Priorities |
| TPC | Talk Politics China |
| TPCV | Tank Pressure Control Valve |
| TPD | Timberland Production District |
| TPD | Total Permanent Disability |
| TPE | Total Power Exchange |
| TPI | Timber Products Inspection |
| TPI | Total Personal Income |