| Abbreviation | Definition |
|---|---|
| ATCIS | Automated Tool Control and Inventory System |
| ATCISA | Allied Tactical Communications and Information Systems Agency (NATO) |
| ATCMD | Advance Transportation Control and Movement Document |
| ATCOM | Aviation and Troop Command |
| ATCOMMSYS | ATlantic Area COMMunication SYStem |
| ATCP | Army Transformation Campaign Plan |
| ATCS | Advanced Tactical Communication System |
| ATCS | Air Traffic Control Section |
| ATCS | Allied Training Centre South |
| ATCSS | Air Traffic Control Signaling System |
| ATCTS | Army Training and Certification Tracking System |
| ATCTS | Army Training Certification Tracking System |
| ATCU | Air Transportable Communications Unit |
| ATD | Advanced Technology Demonstration |
| ATD | Aviation Test Directorate |
| ATDC | Army Training Device Center |
| ATDD | Alaska Theater Defense Division |
| ATDF | Anti Thottie Defence Force |
| ATDL | Army Tactical Data Link |
| ATDL1 | Army Tactical Data Link 1 |