SQR (disambiguation)

SQR may refer to:

Biochemistry

 * Succinate-Q reductase, an enzyme complex
 * sulfide:quinone oxidorreductase pathway, see Microbial oxidation of sulfur

Computing

 * SQR, a programming language
 * SQR codes, Secure Quick Response codes

Linguistics

 * Siculo-Arabic (ISO 639 language code: sqr)
 * Smiting-blade symbol (hieroglyph)

Mathematics

 * square (algebra) (sqr, sq)
 * square root (sqr, sqrt)

Transportation

 * Soroako Airport (IATA airport code SQR) Soroako, South Sulawesi, Indonesia
 * Alsaqer Aviation (ICAO airline code SQR) defunct Libyan airline, see List of airline codes (A)
 * Sultanpur Lodi (Indian rail code SQR), see List of railway stations in India

Other uses

 * The SQR Store, originally "S.Q.R.", department store in Anaheim, California, 1907–1978