| Abbreviation | Definition |
|---|---|
| TIA | Taliban In America |
| TIC | Tourist Information Centre |
| TICP | Tactical Interoperable Communications Plan |
| TID | Technical Information Document |
| TID | Total Industry Demand |
| TIF | Tax Increase Feud |
| TIF | Tax Increment Funding |
| TIF | Travel Insurance and Financial |
| TIFA | Trucks in Fatal Accidents database |
| TIGER | Technology Industry And Government For E Revolution |
| TIGERCUBS | Transportation Investment Generating Economic Recovery for Cities Underfunded Because of Size |
| TIGR | Targeted Industry Growth Report |
| TIGR | The Institute for Genomic Research |
| TII | Technology Infrastructure Initiative |
| TIL | Technical Information Library |
| TIM | Total Information Management |
| TIM | Tourist Information Material |
| TIMS | Treasury Information Management System |
| TIN | Tax Identification Number |
| TIN | Taxpayer Identification Number |