BX can refer to:

Organisations

• Base exchange, a store operated by the U.S. Army and Air Force Exchange Service
• Bern eXchange, the stock exchange of Bern, Switzerland
• BookCrossing, a program for sharing second-hand books
• BX.COM, an Internet Software Development Company located in the United States
• Barnard's Express, a pioneer transportation company in British Columbia
• BX (sternwheeler) a boat owned by Barnard's Express

Science and technology

• Biopsy (Bx), a common medical abbreviation
• Coast Air (BX), IATA airline code
• BX cable, a genericized trademark term for type AC armoured electrical cable
• Citroën BX, an automobile
• Intel 440BX chipset for Pentium II/Pentium III/III and Celeron processors
• Bionix AFV, an infantry fighting vehicle produced in Singapore.
• BitchX (BX), an IRC client
• (°Bx), a measure of the consistency of wet solids.

Places

• Belgium (BX), World Meteorological Organization country code
• The Bronx, one of the five boroughs of The City of New York, New York, U.S.
• Brunei (BX), FIPS Pub 10-4 and obsolete NATO country code

Other

• BX, a registered ranch brand in Utah, USA
• BX, the ticker symbol for the Blackstone Group

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