BX

BX, Bx, and similar may refer to:

Businesses and organizations

 * Barnard's Express, a transportation company in British Columbia, Canada
 * Base exchange, a store operated by the Army, Naval, and Air Force Exchange Service
 * Berne eXchange, the stock exchange of Bern, Switzerland
 * Blackstone Group (NYSE stock ticker symbol BX)
 * BookCrossing, a program for sharing second-hand books
 * Air Busan (established 2007) (IATA airline code BX)
 * Coast Air (1998–2008) (IATA airline code BX)

Vehicles

 * BX (sternwheeler), a boat owned by Barnard's Express
 * Citroën BX, an automobile
 * Bionix AFV, an infantry fighting vehicle produced in Singapore

Biology and medicine

 * Biopsy, the extraction of cells or tissues to determine the presence or extent of a disease
 * Biosimilar, an identical copy of a biologic medication manufactured by a different company
 * Bithorax (part of bithorax complex), a genetic mutation in flies

Computing

 * BX register, a general-purpose 16-bit X86 register
 * BitchX, an IRC client
 * Intel 440BX, chipset for Pentium II/Pentium III/III and Celeron processors
 * Bidirectional transformations

Other uses in science and technology

 * BX cable, a genericized trademark term for a type of AC armoured electrical cable
 * BeppoSAX catalog, also called SAX and 1SAX
 * Brix (°Bx), measurement unit of the dissolved sugar-to-water mass ratio of a liquid

Places

 * Belgium, World Meteorological Organization country code
 * BeNeLux, a politico-economic union of Belgium, the Netherlands, and Luxembourg
 * Berryessa, San Jose, California
 * Bordeaux, France
 * The Bronx, one of the five boroughs of The City of New York, New York, U.S. (also for many institutions, usually in the borough, and named for it)
 * Brunei (LOC MARC code and obsolete FIPS Pub 10-4 and NATO country codes)

Other uses

 * BX convoys of World War II ships
 * Battlecross, a rock band from Michigan