| Abbreviation | Definition |
|---|---|
| TINA | Telecommunications Infrastructure Needs Assessment |
| TIP | Three I's of Poverty |
| TIP | Treasury Investment Program |
| TIP | Treatment Improvement Protocols |
| TIP | Turn In Poachers |
| TIPS | Tax Information Phone Service |
| TIPS | Telephone Information Processing System |
| TIPS | Terrorism Information Protection System |
| TIPS | Transition Induction and Progression Strategies |
| TIZ | Tax Incentive Zone |
| TJ | Transposed Journals |
| TJNAF | Thomas Jefferson National Accelerator Facility |
| TJP | Tehrik-i-Jafria Pakistan |
| TKP | Tuerkiye Komuenist Partisi |
| TLA | Three-Letter Acronym |
| TLA | Three-Letter Agency |
| TLA | Two Level Analysis |
| TLB | Top Level Budget |
| TLC | Tax Lien Certificate |
| TLO | Task- Level Organization |