| Acronym | Definition |
|---|
| ATRS | Arkansas Teacher Retirement System |
| ATRS | Automated Transport and Retrieval System |
| ATRS | Aerial Targets Squadron |
| ATRS | Automated Trouble Reporting System |
| ATRS | Automatic Turbine Run-up System |
| ATRS | Arkansas Therapeutic Recreation Society |
| ATRS | Automatic Target Recognition System |
| ATRS | Advance Tactical Radar System |
| ATRS | Aviation Training Research Simulator |
| ATRS | Advanced Temporary Roof Support (mining) |
| ATRS | Application Text Retrieval System |
| ATRS | Automated Time Reporting System |
| ATRS | Association Togolaise de la Recherche Scientifique (French: Togolese Association for Scientific Research; Lomé, Togo) |