AR

• .ar
• Absolute Return + Alpha
• Accelerated Reader
• Acoustic Research
• Aerolíneas Argentinas
• Alfa Romeo
• Alternate reality (disambiguation)
• American Renaissance (magazine)
• Androgen receptor
• Anti-reflective
• Aortic insufficiency
• Appenzell Outer Rhodes
• Aqua regia
• Ar (city)
• Arabic
• Archimedes number
• Architectural Review
• Argent
• Argentina
• Argon
• Arkansas
• Armalite Rifle
• Armeerundschau
• Armstrong-Ringsted Community School District
• Army Reserve (Ireland)
• Artists and repertoire
• Aryl
• Aspect ratio (aeronautics)
• Assistant referee (association football)
• Augmented reality
• Autoregressive model
• Avis de réception
• Gor
• Katarzyna Kobro
• Province of Arezzo
• Relative atomic mass
• Toyota AR engine
• ar (Unix)
• inverse hyperbolic functions
• repair ship