| Abbreviation | Definition |
|---|---|
| ARCP | American Residential Cleaning Professions |
| ARED | Anaconda Residential Estate District |
| AREZ | Ammad Real Estate Zone |
| ARF | Adult Residential Facilities |
| ARLA | Association of Residential Letting Agents |
| ARLA | Association of Residential Lettings Agents |
| ARPP | Alternate Residential Placement Petition |
| ARR | ARMOUR Residential |
| ARR | ARMOUR Residential REIT |
| ARRM | Association of Residential Resources in MN |
| ARRP | Anesthesiology Resident Research Pathway |
| ARSP | Anesthesiology Resident Scholars Program |
| ARTA | American Residential Treatment Association |
| ASRP | Adaptive Skills Residential Program |
| AT | Assistant Technician |
| ATRAS | AHOD Temporary Resident Access Study |
| ATRAS | AHOD Temporary Residents Access Study |
| AVRA | Atwater Village Residents Association |
| BART | Belle Air Residents For Truth |
| BBRN | Better Buildings Residential Network |