| Abbreviation | Definition |
|---|---|
| AARP | American Association for Retired People |
| AARP | American Association of Retired People |
| AARP | Association of American Retired People |
| AARP | Association of American Retired Persons |
| AARP | Association of Anally Rogering People |
| AARS | Alabama Association of Rescue Squads |
| AARS | Asian Association on Remote Sensing |
| AARS | Association of American Rhodes Scholars |
| AARSC | Association of Arab Remote Sensing Centers |
| AAS | Association for Asian Studies |
| AAS | Association of Amherst Students |
| AASA | American Action Shooting Association |
| AASAA | All Adivasi Students Association Of Asaam |
| AASAA | All Adivasi Students Association of Assam |
| AASB | Alabama Association of School Boards |
| AASC | American Association of Safety Councils |
| AASC | American Association of Service Coordinators |
| AASC | American Association of State Climatologists |
| AASC | Apartment Association of Southern Colorado |
| AASC | Association of African Sports Confederations |