| Abbreviation | Definition |
|---|---|
| TAP | Total Action against Poverty |
| TAPA | Technology Asset Protection Association |
| TAPPI | Technical Association of the Pulp and Paper Industry |
| TAPS | Tazewell Animal Protection Society |
| TAPS | Tragedy Assistance Program for Survivors |
| TARP | Transparency Accountability Rights for Parents |
| TARS | Toronto Animal Rights Society |
| TASC | The Association for Somali Cats |
| TASD | Trans Action South Dakota |
| TASD | Traveler's Aid Society of Detroit |
| TASF | Tuskegee Airmen Scholarship Foundation |
| TASK | The Associated Supporters Kitty |
| TASO | The Aids Support Organisation |
| TAT | Truckers Against Trafficking |
| TATB | Thai Association of Tissue Banking |
| TBAG | Tempe Bicycle Action Group |
| TBF | Thomas B. Fordham Institute |
| TBHA | Thunder Bay Hiking Association |
| TBI | Tissue Banks International |
| TBLL | Tampa Bay Little League |