TTIT
| Acronym | Definition |
|---|---|
| TTIT | Tatung Institute of Technology (Taiwan) |
| TTIT | Trinidad and Tobago Institute of Technology (est. 2001; now University of Trinidad and Tobago) |
| TTIT | Tissue Thromboplastin Inhibition Test |
| TTIT | Turbocharger Turbine Inlet Temperature |