| Acronym | Definition |
|---|
| TTRA➣Travel and Tourism Research Association |
| TTRA➣Trinidad and Tobago Racing Authority |
| TTRA➣Travel and Transportation Reform Act of 1998 |
| TTRA➣Tongass Timber Reform Act of 1990 |
| TTRA➣Triangle Technical Recruiters Association (North Carolina) |
| TTRA➣Thames Traditional Rowing Association (UK) |
| TTRA➣Tourist Trophy Riders Association (UK) |
| TTRA➣Think Truth Regardless of Appearance |