| Acronym | Definition |
|---|
| ATSG | Automatic Transmission Service Group |
| ATSG | Advanced Technologies Support Group |
| ATSG | Academia Tecnológica de Sistemas de Gestão |
| ATSG | Allied Technical Services Group |
| ATSG | Acoustic Test Signal Generator |
| ATSG | Assistive Technology State Grant (program) |
| ATSG | All This Sounds Gas (band) |
| ATSG | Appalachian Tectonic Studies Group |
| ATSG | Assistive Technology Standards Group |
| ATSG | AEGIS Training Support Group |
| ATSG | Antiterrorism Supplemental Grant |
| ATSG | Agriculture Trade Study Group |
| ATSG | Aviano Tail Spotters Group |
| ATSG | Advanced Technology Support Group |
| ATSG | Army Technology Seminar Game |
| ATSG | Assembly Tooling Standardization Group |
| ATSG | Academic Technical Support Group |
| ATSG | Allgemeiner Teil der Sozialversicherungsrechts |
| ATSG | Applied Technology Steering Group |
| ATSG | Adaptive Two-point Stepsize Gradient |
| ATSG | Air Transportation Support Group |
| ATSG | Association des Travailleurs Sénégalais à Grenoble |
| ATSG | Aluminum Tail Slitting Guide |
| ATSG | Academic and Technical Services Group |
| ATSG | American Thoracic Society Guidelines |
| ATSG | Australian Transport Study Group |