| ATTS | Active Torque Transfer System 
| Others |
| ATTS | Addicted To The Stick
| Others |
| ATTS | Advanced Text To Speech
| Others |
| ATTS | Advanced Torque Transfer System
| Others |
| ATTS | Advanced Transportation Technology Stakeholders
| Others |
| ATTS | Advanced Triad Turbine Services
| Others |
| ATTS | Agricultural Tailgate Training Safety
| Others |
| ATTS | All Types Transportation Services
| Others |
| ATTS | All Types Transportation Sevices
| Others |
| ATTS | Ambient Temperature Transport System
| Others |
| ATTS | American Temperament Test Society
| Others |
| ATTS | American Temperament Testing Society
| Others |
| ATTS | Anualagricultural Tailgate Training Safety
| Others |
| ATTS | Arkansas Technology Transfer Society
| Others |
| ATTS | Associazione Torinese Tram Storici
| Others |
| ATTS | Automated Terminal Tracking Systems
| Others |
| ATTS | Automated Tire Tracking System
| Others |
| ATTS | Automatic Tape Time Select
| Others |
| ATTS | Automatic Tape Tuning System
| Others |
| ATTS | Automatic Torque Transfer System
| Others |
| ATTS | Automatic Traction Torque Stabilizer
| Others |
| ATTS | Automotive Technician Training Services
| Others |
| ATTS | Automotive Technician Training Standards
| Others |