| Term | Full Form | Category |
|---|---|---|
| TTRI | Taiwan Textile Research Institute | Others |
| TTRI | Therapeutic Technologies Research Initiative | Others |
| TTRI | Tocklai Tea Research Institute | Others |
| TTRI | Toyota Transportation Research Institute | Others |
| TTRI | Trade Training and Research Institute | Others |
| TTRI | Training for Township Renewal Initiative | Others |
| TTRI | Tsetse and Trypanosomosis Research Institute | Others |