| Acronym | Definition |
|---|
| TTAC➣The Truth About Cars (website) |
| TTAC➣Training and Technical Assistance Center |
| TTAC➣Transportation Technical Advisory Committee (various locations) |
| TTAC➣Transportation Threat Assessment and Credentialing (TSA) |
| TTAC➣Tobacco Technical Assistance Consortium (est. 2001; Atlanta, GA) |
| TTAC➣Terrorist Threat Assessment and Credentialing |
| TTAC➣Trinidad and Tobago Computer Society |