ASR may refer to:

Look up asr in Wiktionary, the free dictionary.

• A US Navy hull classification symbol: Submarine rescue vessel (ASR)
• U.S. Army Service Ribbon

• ASR Nederland, a Dutch insurance company
• Academy at Swift River
• Erkilet International Airport, Turkey, IATA code
• Anderson Serangoon Junior College, pre-university institution in Singapore

• Ancestral sequence reconstruction, to infer ancient DNA sequences
• Acute stress reaction to traumatic event
• Adult sex ratio of males to females
• Alkali–silica reaction, affecting sensitive aggregates and causing concrete expansion and failure
• Analyte-specific reagent, a class of biological molecules
• Asian soybean rust, a plant disease
• Age-Standardized Rates of a phenomenon in a series of populations.

• Automatic speech recognition
• Automotive shredder residue, of shredded automobiles
• Aquifer storage and recovery, of potable water in an aquifer
• Airport surveillance radar
• Asr (radar), an Iranian radar system
• Arithmetic shift right, a computer instruction
• Answer-seizure ratio, the percentage of telephone calls that are answered
• Traction control system, from German Antriebsschlupfregelung (Acceleration Slip Regulation), system to prevent loss of traction on vehicles
• Automatic Send Receive on a teletype
• Teletype ASR 33, a specific model teletype, commonly used for early day minicomputers
• Architecturally Significant Requirements

• Air-sea rescue
• State Railway of Thailand ASR class
• Australian Southern Railroad, a former rail freight operator

• Asr, the daily afternoon prayer in Islam
• Accelerated share repurchase, whereby companies buy back shares
• ASMR (autonomous sensory meridian response), a tingling sensation

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