- AR stands for Abandon Rate
- AR stands for Abbey Road (Beatles album/song)
- AR stands for Abnormal Returns
- AR stands for Absorber Rod
- AR stands for Abstellraum (German: storage room)
- AR stands for Abuse Report (gaming, Second Life)
- AR stands for Accelerated Reader
- AR stands for Acceptance Review
- AR stands for Access Rate
- AR stands for Access Right
- AR stands for Access Router
- AR stands for Account Representative (Sprint)
- AR stands for Accounts Receivable
- AR stands for Accounts Register
- AR stands for Accusé de Réception (French: Acknowledgment of Receipt; mail)
- AR stands for Acetal Resin
- AR stands for Acid Reflux
- AR stands for Acknowledge Receipt
- AR stands for Acoustic Reflex
- AR stands for Acoustic Research (loudspeaker manufacturer)
- AR stands for Acoustique Renforcée (French: Enhanced Acoustics; window noise insulation)
- AR stands for Acquiescence Ruling
- AR stands for Acquisition Reform
- AR stands for Acquisition Request
- AR stands for Acquisition Risk
- AR stands for Acrobat Reader (Adobe Systems)
- AR stands for Action Replay (game console cheat device)
- AR stands for Action Report
- AR stands for Action Required
- AR stands for Action Research
- AR stands for Active Radar
- AR stands for Active Region (sunspot observation)
- AR stands for Activity Ratio
- AR stands for Activity Reports
- AR stands for Activity Resume (ITU-T)
- AR stands for Acute Rejection
- AR stands for Adaptive Reception Control
- AR stands for Add Register
- AR stands for Address Register
- AR stands for Administrative Record
- AR stands for Administrative Regulation (various organizations)
- AR stands for Administrative Requirement
- AR stands for Adrenaline Rush (gaming; also an IMAX film)
- AR stands for Adrenergic Receptor (protein)
- AR stands for Advanced Reactor
- AR stands for Adventure Racing
- AR stands for Adverse Reaction
- AR stands for Advice of Receipt (Canada Post)
- AR stands for Aerial Reconnaissance
- AR stands for Aerial Refueling
- AR stands for Aerolíneas Argentinas
- AR stands for Aeronautical Requirement
- AR stands for Affiliate Relations
- AR stands for Affirmative Rebuttal (debate)
- AR stands for African Rights
- AR stands for After Rebate
- AR stands for Aftermath Records (record label)
- AR stands for Age Regression
- AR stands for Agency Resources
- AR stands for Agent Report
- AR stands for Air Reconnaissance
- AR stands for Air Refueling
- AR stands for Air Resistance
- AR stands for Air Revitalization
- AR stands for Air Rifle
- AR stands for Air Route
- AR stands for Airborne Reconnaissance
- AR stands for Airborne Relay
- AR stands for Airworthiness Representative
- AR stands for Aishwarya Rai (Indian actress)
- AR stands for Akademia Rolnicza (Polish: University of Agriculture)
- AR stands for Alabama Railroad
- AR stands for Alan Rickman (British actor)
- AR stands for Alarm Reaction
- AR stands for Alarm Report
- AR stands for Aldose Reductase
- AR stands for All Rail
- AR stands for All Risks
- AR stands for Allergic Rhinitis
- AR stands for Allied Racing (Halo racing clan)
- AR stands for Alternate Routing
- AR stands for Alternative Radio (public affairs program)
- AR stands for Altesse Royal (French: Royal Highness)
- AR stands for Amateur Radio
- AR stands for Amazing Race (reality TV show)
- AR stands for American Racing (American Racing wheels)
- AR stands for American Revolution
- AR stands for American Rifleman Magazine
- AR stands for American Rivers, Inc.
- AR stands for American Robin
- AR stands for Anal Retentive
- AR stands for Analyst Relations (various locations)
- AR stands for Analytical Reagent
- AR stands for Ancestral Roots (genealogy)
- AR stands for Ancien Regime (gaming)
- AR stands for Androgen Receptor
- AR stands for Angle Resolved
- AR stands for Animal Rights
- AR stands for Annual Rate
- AR stands for Annual Report
- AR stands for Annual Return
- AR stands for Annual Reviews