| Acronym | Definition |
|---|
| ATTS | Advanced Text To Speech |
| ATTS | Active Torque Transfer System |
| ATTS | American Temperament Test Society, Inc. (temperament evaluation of dogs) |
| ATTS | Auto Teile Tuning Shop |
| ATTS | Air Technical Training School (Thailand) |
| ATTS | Advanced Torque Transfer System (automotive) |
| ATTS | Associazione Torinese Tram Storici (Turin, Italy) |
| ATTS | Apex Telecommunications Training Solutions |
| ATTS | Adrift Topic Tutorial System |
| ATTS | American Tax Token Society |
| ATTS | Automatic Test Technology Standards |
| ATTS | Agricultural Tailgate Training Safety |
| ATTS | Automated Tire Tracking System |
| ATTS | Association for Textile Technical Study |
| ATTS | AT&T Solutions |
| ATTS | Active Tuning Test Sets |
| ATTS | Automated Test Technology Standards |
| ATTS | Administrative Trade Training School (Pakistan) |
| ATTS | Automated Tank Target System |
| ATTS | American Telephone and Telegraph Solutions |
| ATTS | Acquisition Training and Tracking System |
| ATTS | Advanced Total Transmission Services, Corp. |
| ATTS | Arkhangelsk State Technical University |
| ATTS | Automotive Technical Teaching Standards |
| ATTS | Altus Thermal Training Suit |
| ATTS | Agency Technology Transfer Staff |
| ATTS | A Time to Smile (program for minority and underprivileged girls; Santa Rosa, California) |
| ATTS | Arkansas Technology Transfer Society |
| ATTS | All Types Transportation Services, Inc. (est. 1999) |
| ATTS | Advanced Telescope Tracking System (software) |