ASR

ASR may refer to:

Military

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

Organizations and publications

 * 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

Science

 * 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.

Technology

 * 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

Software

 * Apple Software Restore, a command line utility in Mac OS X
 * Automated system recovery, a Microsoft Windows XP function

Transport

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

Other uses

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