| AARS | Academic Advising and Retention Services 
| Others |
| AARS | Acute Atlantoaxial Rotary Subluxation
| Others |
| AARS | Administrative Action Records Systems
| Others |
| AARS | Adolescent Anger Rating Scale
| Others |
| AARS | Advanced Aerial Radiac System
| Others |
| AARS | Advanced Airborne Radar System
| Others |
| AARS | Advanced Airborne Radiac System
| Others |
| AARS | Advanced Airborne Radiac Systems
| Others |
| AARS | After Action Review System
| Others |
| AARS | Alabama Association of Rescue Squads
| Others |
| AARS | All America Rose Selection
| Others |
| AARS | All America Rose Selections
| Others |
| AARS | All American Rose Selection
| Others |
| AARS | American Acne and Rosacea Society
| Others |
| AARS | American Animal Rescue Society
| Others |
| AARS | American Association of Railroad Superintendents
| Others |
| AARS | Ancient and Accepted Scottish Rite
| Others |
| AARS | Appeals Account Resolution Specialist
| Others |
| AARS | Approved Auto Repair Service
| Others |
| AARS | Approved Auto Repair Shop
| Others |
| AARS | Approximate Analogical Reasoning Scheme
| Others |
| AARS | Archer Appliance Repair Service
| Others |
| AARS | Asian American Recovery Services
| Others |
| AARS | Asian American Recovery Services, Inc.
| Others |
| AARS | Asian Association of Remote Sensing
| Others |
| AARS | Asian Association on Remote Sensing
| Others |
| AARS | Association of American Rhodes Scholars
| Others |
| AARS | Austin Amateur Radio Supply
| Others |
| AARS | Automated Aerial Refueling System
| Others |
| AARS | Automated Aircraft Reporting System
| Others |