| Abbreviation | Definition |
|---|---|
| ATSR | Advanced Tactical Surveillance Radar |
| ATSS | Automatic Test Support System |
| ATT | Advanced Tactical Transport |
| ATT | Advanced Theatre Transport |
| ATT | Advanced Transport Technology |
| ATT | Anti Tank Trooper |
| ATT | Assign Terminal Type |
| ATT | Authorization To Test |
| ATT | AUTHORIZATION to Test The .... |
| ATTACC | Army Training and Testing Area Carrying Capacity |
| ATTACH | Attachment |
| ATTAP | Advanced Turbine Technology Application Program |
| ATTC | All Terain Tracked Carrier |
| ATTC | Army Trauma Training Course |
| ATTC | Aviation Technical Test Center |
| ATTD | Advanced Technology Transition Demonstration |
| ATTF | Anti-Terrorist Task Force |
| ATTN | Attention |
| ATTP | Army Tactics, Techniques, and Procedures |
| ATTU | Air Transportable Treatment Unit |