AAR

• AAR Corporation
• AAR coupling
• AAR wheel arrangement
• Aar
• Aar (Dill)
• Aar (Lahn)
• Aar (Star Wars)
• Aar (Twiste)
• Aar (village)
• Aare (disambiguation)
• Aarhus Airport
• Adam's apple reduction
• Afar language
• African American Review
• After action report
• After-action review
• Ahr
• Air America Radio
• Air-to-air refueling
• All American Racers
• All-American Road
• Allens (law firm)
• American Academy in Rome
• American Academy of Religion
• Amino acid response
• Ann Arbor Railroad (disambiguation)
• Asiana Airlines
• Association for Automated Reasoning
• Association of American Railroads
• Average accounting return
• Deneb in fiction
• List of SMS abbreviations
• South American–Antarctic Ridge
• The All-American Rejects