| Abbreviation | Definition |
|---|---|
| ATC | Air Training Command |
| ATC | Air Training Corps |
| ATC | Air Transport Command |
| ATC | Air Transportable Clinic |
| ATC | Army Tactical Center |
| ATC | Army Training Center |
| ATC | Attack The Cripple |
| ATC | Automatic Target Cueing |
| ATCA | Allied Tactical Communications Agency |
| ATCAE | Army Technical Control Analysis Element |
| ATCAE | Army Technical Control and Analysis Element |
| ATCAL | Attrition Algorithm Methodology |
| ATCAS | Advanced Towed Cannon System |
| ATCC | Anti-Terrorism Coordinating Committee |
| ATCCB | ATCCS Configuration Control Board |
| ATCCIS | Army Tactical C&C Information System |
| ATCCS | Army Tactical Command and Control System |
| ATCC-SSG | Anti-Terrorism Coordinating Committee-Senior Steering Group |
| ATCD | Acquisition Training and Career Development |
| atchd | attached (personnel) |