- AAR stands for American Academy of Religion
- AAR stands for Association of American Railroads
- AAR stands for All-American Rejects (band)
- AAR stands for After Action Report
- AAR stands for After Action Review
- AAR stands for Adobe Acrobat Reader (Adobe Systems, Inc.)
- AAR stands for Aircraft Accident Report
- AAR stands for Archives Audiovisuelles de la Recherche (French: Audiovisual Research Archives)
- AAR stands for Annual Activity Report (various organizations)
- AAR stands for Android Archive (mobile application files)
- AAR stands for Air America Radio (talk radio network)
- AAR stands for Alabama Association of Realtors (Montgomery, AL)
- AAR stands for Allens Arthur Robinson (law firm; Australia)
- AAR stands for At Any Rate
- AAR stands for American Association of Railroads
- AAR stands for American Academy in Rome
- AAR stands for Army Armament Research (US Army)
- AAR stands for Apple Authorized Reseller
- AAR stands for Automated Aerial Refueling (US NASA)
- AAR stands for Association of Amercian Railways
- AAR stands for Association for Aid and Relief (Tokyo, Japan)
- AAR stands for All American Racers
- AAR stands for Arcadia Association of Realtors (Arcadia, CA)
- AAR stands for Alkali-Aggregate Reaction
- AAR stands for Approved Auto Repair (American Automobile Association)
- AAR stands for Age-Adjusted Rate (health statistics)
- AAR stands for Air-to-Air Refueling
- AAR stands for Authority for Advance Rulings (India)
- AAR stands for Antigen-Antikörper Reaktion (German: Antigen-Antibody Reaction)
- AAR stands for Automatic Alternate Routing
- AAR stands for Association of Authors’ Representatives, Inc.
- AAR stands for Against All Risks
- AAR stands for Adult Abuse Registry (Delaware)
- AAR stands for Average Annual Rainfall
- AAR stands for Accumulation-Area Ratio
- AAR stands for Alliance for Aging Research
- AAR stands for Allen Aircraft Radio (est. 1951; Wood Dale, IL)
- AAR stands for Action for Aboriginal Rights
- AAR stands for Association for Automated Reasoning
- AAR stands for Airport Acceptance Rate
- AAR stands for Astronomy and Astrophysics Review (Springer publication)
- AAR stands for Association to Aid Refugees (Japan)
- AAR stands for Aarhus, Denmark – Tirstrup (Airport Code)
- AAR stands for Airport Arrival Rate (capacity measure)
- AAR stands for Active Array Radar
- AAR stands for Administrative Adjustment Report
- AAR stands for Antigen-Antibody Reaction
- AAR stands for Alliance des Associations de Retraités (French: Alliance of Pensioners’ Associations; Quebec, Canada)
- AAR stands for Automatic Address Recognition (various businesses)
- AAR stands for American Association of Religion
- AAR stands for Alfa, Access and Renova (Russian Oil Co)
- AAR stands for Aortic Aneurysm Repair
- AAR stands for Air Augmented Rocket
- AAR stands for Air to Air Receive
- AAR stands for Affirmative Action Representative
- AAR stands for Antigen-Antiglobulin Reaction
- AAR stands for Airworthiness Assurance Research and Development Branch (US FAA)
- AAR stands for Automatic Adaptive Routing
- AAR stands for Asiana Airlines Republic of Korea (ICAO code)
- AAR stands for Atlas of Australian Resources
- AAR stands for Army Area Representative
- AAR stands for Adaptive Auto-Regressive
- AAR stands for Acoustic Assessment Report
- AAR stands for Action Aid Rwanda
- AAR stands for Aktiebolaget Atomenergi Research
- AAR stands for Arrival and Assembly Railroads
- AAR stands for Agriculture Acquisition Regulation (US Department of Agriculture)
- AAR stands for Airborne Allergen Report
- AAR stands for Army Achievement Award
- AAR stands for Audit Agenda Record
- AAR stands for Automatic Answering and Recording
- AAR stands for Authorized Area Representative
- AAR stands for Ask Another Race
- AAR stands for Agence Architecture Rey (French architecture agency)
- AAR stands for Auto Analysis Stage (Infrared Space Observatory data analysis)
- AAR stands for Aveize Auto Rétro (car club; France)
- AAR stands for Area Access Rate
AAR