List of acronyms: B

(Main list of acronyms)


 * B – (s) Bel – Boron

B0–9

 * B10 – (i) Ben 10
 * B10: AF – (i) Ben 10: Alien Force
 * B10: UA – (i) Ben 10: Ultimate Alien
 * B2B – (i) Business-to-business electronic commerce
 * B2C – (i) Business-to-consumer electronic commerce
 * B2E – (i) Business-to-employee electronic commerce
 * B2M – Business to many

BA

 * ba – (s) Bashkir language (ISO 639-1 code)
 * Ba – (s) Barium
 * BA –
 * (i) Bachelor of Arts
 * (s) Bahrain (FIPS 10-4 country code)
 * Bosnia and Herzegovina (ISO 3166 diagram)
 * (i) British Airways
 * British Army
 * Bank of America
 * BAA – (i) British Airport Authority
 * BAC – (a) Blood alcohol content
 * British Aircraft Corporation
 * BAD – (HBO) Boxing After Dark
 * BADD – (a) Battlefield Awareness and Data Dissemination
 * BAE – (p) BAE Systems (formerly British Aerospace, BAe)
 * BAFTA – (a) British Academy of Film and Television Arts
 * BAI – (i) Battlefield Air Interdiction
 * bak – (s) Bashkir language (ISO 639-2 code)
 * BALCO – (p) Bay Area Laboratory Co-operative
 * bam – (s) Bambara language (ISO 639-2 code)
 * BAM –
 * (i) Business Activity Monitoring
 * (s) Bosnia and Herzegovina convertible mark (ISO 4217 currency code)
 * BAMC – (i) Brooke Army Medical Center
 * Banesto – (p) Banco Español de Crédito (Spanish, "Spanish Credit Bank")
 * BANG – (a) Bits, Atoms, Neurons, Genes
 * BAO – (i) Battlefield Air Operations
 * BAOR – (i) British Army Of the Rhine
 * B[a]P – (p) Benzo[a]pyrene
 * BAR
 * (s) Barbados (IOC trigram, but not FIFA or ISO 3166)
 * (a) British American Racing
 * Browning Automatic Rifle
 * Buy-American Restrictions
 * BARD – (a) Binational Agricultural Research and Development fund (between the US and Israel)
 * BARDA – (a) Biomedical Advanced Research and Development Authority
 * BART – (a) Bay Area Rapid Transit
 * BAS – (i) Battalion Aid Station
 * BASE – (a) Building, Antenna, Span, Earth (parachute from)
 * BASF – (i) Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory, a German chemicals company)
 * BASIC – (a) Beginner's All-purpose Symbolic Instruction Code (acronym was added later, originally it was simply Basic)
 * BAT – (a/i) Basic Aid Training
 * (a) British American Tobacco, London, England
 * (a) British Antarctic Territory (overseas territory)
 * BATF – (i) U.S. Bureau of Alcohol, Tobacco, and Firearms
 * BATS –
 * (a) Behavior Analysis Training System
 * Bradley Advanced Training System
 * BATTeRS – (a) Bisei Asteroid Tracking Telescope for Rapid Survey

BB

 * BB
 * (s) Barbados (ISO 3166 digram; FIPS 10-4 country code)
 * (i) Boys' Brigade (Christian youth organization)
 * Brigitte Bardot (actress)
 * Bumblebee
 * BBB
 * (i) Better Business Bureau
 * Blood–brain barrier
 * (p/i) BoerBurgerBeweging (Dutch, "Farmer–Citizen Movement"; Dutch political party)
 * BBC
 * (i) Breeding Bird Census
 * British Broadcasting Corporation
 * (i) Bumper to Back of Cab (trucking measurement)
 * BBCOR – (i) Bat-ball coefficient of restitution (standard used for non-wood bats used in US college baseball)
 * BBD
 * (s) Barbadian dollar (ISO 4217 currency code)
 * (a) Bowel Bladder Dysfunction
 * BBL
 * (i) Be Back Later
 * (i) Brazilian Butt Lift
 * Bird Banding Laboratory
 * British Basketball League
 * BBN – (i) Bolt, Beranek and Newman
 * BBOL – Blessing Ball of Light
 * BBQ – (s) Barbecue
 * BBS
 * (i) Breeding Bird Survey (North America)
 * Brigade/Battalion Battle Simulation
 * Bulletin Board System
 * BBSRC – (i) U.K. Biotechnology and Biological Sciences Research Council
 * BBVA – (i) Banco Bilbao Vizcaya Argentaria (Spanish bank)
 * BBYO – B'nai B'rith Youth Organization

BC

 * BC
 * (i) Before Christ
 * Blind Copy (in emailers)
 * Boston College
 * (s) Botswana (FIPS 10-4 country code; from Bechuanaland)
 * British Columbia (postal symbol)
 * BCA
 * (i) Bachelor of Computer Application
 * Black Coaches & Administrators
 * BCC – (i) Blind Carbon Copy
 * BCCI
 * (i) Bank of Credit and Commerce International
 * Board of Control for Cricket in India
 * BCD – (i) Binary-Coded Decimal
 * BCE
 * (i) Banque centrale européenne (French, "European Central Bank")
 * Battlefield Co-ordination Element
 * BC Electric, a former name for BC Hydro
 * Before Common Era
 * BCER – (i) British Columbia Electric Railway
 * BCFG – (s) Patchy Fog (METAR Code)
 * BCIS (fratricide avoidance system) – (i) Battlefield Combat Identification System
 * BCLL – (a) Bibliography of Celtic Latin Literature
 * BCOL – (i) British Columbia Railway
 * BCPL – (i) Basic Combined Programming Language (progenitor of C)
 * BCS
 * (i) Bachelor of Computer Science
 * Bardeen, Cooper, and Schrieffer superconduction theory
 * Bowl Championship Series (US college football)
 * BCT – (i) Brigade Combat Team

BD

 * BD
 * (s) Bangladesh (ISO 3166 digram)
 * Bermuda (FIPS 10-4 territory code)
 * BDA – (i) British Dental Association
 * BDD
 * (i) Body Dysmorphic Disorder
 * British Defence Doctrine
 * Bde – (s) Brigade
 * BDFL – (i) Benevolent Dictator For Life
 * BDI – (s) Burundi (ISO 3166 trigram)
 * BDNF – (i) Brain-Derived Neurotrophic Factor
 * BDO – (i) Battle Dress Overgarment
 * BDOS – (a) Basic Disk Operating System; part of CP/M
 * BDS
 * (i) – Bachelor of Dental Surgery
 * Boycott, Divestment and Sanctions, a movement advocating various boycotts of Israel in the context of the Arab–Israeli conflict
 * BDSM – (i) Bondage and Discipline, Domination and Submission, Sadism and Masochism
 * BDT
 * (s) Bangladeshi taka (ISO 4217 currency code)
 * (i) Bureau de développement des télécommunications (Telecommunication Development Bureau, became ITU-D)
 * BDU – (i) Battle-Dress Uniform

BE

 * be – (s) Belarusian language (ISO 639-1 code)
 * Be – (s) Beryllium
 * BE – (s) Belgium (FIPS 10-4 country code; ISO 3166 digram)
 * BEA
 * (i) Banque extérieure d'Algérie
 * British European Airways (ancestor of British Airways)
 * British Electricity Authority
 * bel – (s) Belarusian language (ISO 639-2 code)
 * BEL – (s) Belgium (ISO 3166 trigram)
 * BEM – (i) British Empire Medal – Bug-Eyed Monster
 * ben – (s) Bengali language (ISO 639-2 code)
 * BEN – (s) Benin (ISO 3166 trigram)
 * BEO – (i) Banquet Event Order
 * BERC – (a) Business Environmental Resource Center
 * BER – (i) Bit Error Rate
 * BES
 * (i) Budget Estimate Submission
 * (s) Caribbean Netherlands (ISO 3166 trigram; from the entity's alternate name of Bonaire, Sint Eustatius and Saba)
 * BESS – (i) Business, Education, and Social Sciences
 * BET – (a/i) Black Entertainment Television
 * BETS – (a) Bradley Embedded Training System
 * BEV
 * (i) Battery electric vehicle
 * Black English Vernacular, a type of English spoken by many African Americans
 * Bundesamt für Eich- und Vermessungswesen (German: "Federal Office of Metrology and Surveying"), Austrian government agency

BF

 * BF – (s) The Bahamas (FIPS 10-4 country code) – Burkina Faso (ISO 3166 digram)
 * b/f – (p) before
 * BFA – (s) Burkina Faso (ISO 3166 trigram)
 * BfArM – (i) Bundesinstitut für Arzneimittel und Medizinprodukte, German governmental institute for drugs and medical devices
 * BFF – (i) Best Friends Forever
 * BFI – (a) British Film Institute
 * BFR – (a) Biennial flight review
 * BFR – (i) Brominated Flame Retardant
 * BFS – (s) Belfast International Airport (IATA airport code)
 * BFSA – (i) Blue Force Situation Awareness
 * BFT – (i) Blue Force Tracking
 * BFX – (s) Bioinformatics

BG

 * bg – (s) Bulgarian language (ISO 639-1 code)
 * BG – (s) Bangladesh (FIPS 10-4 country code) – (i) Battle Group – Body Guard – (s) Brigadier General – (s) Bulgaria (ISO 3166 digram)
 * BGA – (i) Ball Grid Array – Brandy and Ginger Ale (alcoholic beverage)
 * BGD – (s) Bangladesh (ISO 3166 trigram)
 * BGN – (i) U.S. Board on Geographic Names – (s) Bulgarian lev (ISO 4217 currency code)
 * BGR – (s) Bulgaria (ISO 3166 trigram)
 * BGS – (i) Bristol Grammar School – British Geological Survey
 * BGWG – (p) Battle Group Wargame (military simulation; "big wig")

BH

 * bh – (s) Bihari languages (ISO 639-1 code)
 * Bh – (s) Bohrium
 * BH
 * (s) Bahrain (ISO 3166 digram)
 * Belize (FIPS 10-4 country code)
 * BHD – (s) Bahraini dinar (ISO 4217 currency code)
 * BHR – (s) Bahrain (ISO 3166 trigram)
 * BHS
 * (i) British Home Stores
 * (s) The Bahamas (ISO 3166 trigram)

BI

 * bi – (s) Bislami language (ISO 639-1 code)
 * Bi – (s) Bismuth
 * BI – (s) Burundi (ISO 3166 digram)
 * BIAP – (a) Baghdad International Airport – (p) Biafran pound
 * BICS – (i/a) Battlefield Information and Communication System
 * BID – (i) bis in die (Latin, "twice a day")
 * BIDST – (i) British Institute of Dental and Surgical Technologists
 * BIF – (s) Burundian franc (ISO 4217 currency code)
 * bih – (s) Bihari languages (ISO 639-2 code)
 * BIH – (s) Bosnia and Herzegovina (ISO 3166 trigram)
 * BIOS – (a) Basic Input/Output System – British Institute of Organ Studies
 * BIP – (a) Battlefield Interoperability Programme (ancestor of MIP) – Broadcast incremental power algorithm
 * bis – (s) Bislami language (ISO 639-2 code)
 * BISEPS – (a) Battlefield Identification System Environment Performance Simulation
 * BIST – (a) Built-In Self-Test
 * BIT – (a) Bilateral Investment Treaty – Built-In Test
 * BITE – (a) Built-In Test Equipment

BJ

 * BJ – (s) Benin (ISO 3166 digram) – (i) Blowjob (oral sex)
 * BJJ – (i) Brazilian Jiu-Jitsu
 * BJP – (i) Bharatiya Janata Party (Indian People's Party)
 * BJT – (i) Bipolar Junction Transistor

BK

 * Bk – (s) Berkelium
 * BK
 * (i) Burger King
 * (p) Bankrupt (most often seen as "gone BK")
 * (s) Bosnia and Herzegovina (FIPS 10-4 country code)
 * BKN – (s) Broken Sky (METAR Code)

BL

 * BL
 * (s) Bolivia (FIPS 10-4 country code)
 * (i) British Leyland
 * BLCSE – (i) Battle Laboratory Constructive Simulation Environment
 * BLDU – (s) Blowing Dust (METAR Code)
 * BLEVE – (a) Boiling Liquid Expanding Vapour Explosion ("blevy")
 * BLK – (i) Basket Liga Kobiet (Polish, "Women's Basketball League")
 * BLM – (a) Black Lives Matter
 * BLOB – (p) Binary Large OBject
 * BLR – (s) Belarus (ISO 3166 trigram)
 * BLSA – (s) Blowing Sand (METAR Code)
 * BLRSI – Battle Lab Reconfigurable Simulator (U.S. Army)
 * BLSN – (s) Blowing Snow (METAR Code)
 * BLT – (i) Bacon Lettuce Tomato (sandwich)
 * BLUFOR – (p) Blue Force(s) (military)
 * BLUI – (a/i) Body Language User Interface ("blooie")
 * BLZ – (s) Belize (ISO 3166 trigram)

BM

 * bm – (s) Bambara language (ISO 639-1 code)
 * BM – (i) Battle Management – (s) Bermuda (ISO 3166 digram) – Myanmar (FIPS 10-4 country code; from Burma)
 * BMA – (i) British Medical Association
 * BMCC – (i) Borough of Manhattan Community College
 * BMD – (i) Ballistic Missile Defence – (s) Bermudian dollar (ISO 4217 currency code) – (i) Boyevaya Mashina Desanta (Russian Боевая Машина Десанта, "Combat Vehicle Airborne") † – British Military Doctrine
 * BMDG – (i) British Military Doctrine Group
 * BMDO – (i) (U.S.) Ballistic Missile Defense Organization ("bim-do")
 * BME – (p) Biomedical Engineering – (i) Black and Minority Ethnic group – Body Modification E-zine
 * BMEWS – (a/i) Ballistic Missile Early Warning System ("bee-mews")
 * BMI – (i) Body Mass Index – Broadcast Music Incorporated - British Midland International
 * BMG – (i) Bertelsmann Music Group
 * BML – (i) Battle Management Language
 * BMNT – (i) Begin Morning Nautical Twilight
 * BMP – (i) Boyevaya Mashina Pekhoti (Russian Боевая Машина Пехоты, "Combat Vehicle for the Infantry") †
 * BMR – (i) Basal metabolic rate – Bronirovannaya Mashina Razminirovaniya (Russian Бронированная Машина Разминирования, "Armoured Vehicle for Mine-Clearing") †
 * BMU – (s) Bermuda (ISO 3166 trigram)
 * BMW – (i) Bayerische Motoren Werke (German, "Bavarian Motor Works")
 * BMX – (i) Bicycle/Bike Moto (r) Cross

BN

 * bn – (s) Bengali language (ISO 639-1 code)
 * Bn – (s) Battalion
 * BN
 * (s) Brunei (ISO 3166 digram; FIPS 10-4 country code)
 * (i) Barisan Nasional (Malaysia)
 * (i) Burlington Northern
 * BND – (s) Brunei dollar (ISO 4217 currency code)
 * BnF – (i) Bibliothèque nationale de France (French, "National Library of France")
 * BNF
 * (i) Backus–Naur form (computing)
 * British National Formulary
 * BNICE – (a) Biological, Nuclear, Incendiary, Chemical, and Explosive Agents
 * BNP
 * (i) British National Party
 * Banque Nationale de Paris, a predecessor to today's BNP Paribas
 * BNS – (i) Scotiabank, formerly Bank of Nova Scotia
 * BNSF – (i/s) Burlington Northern Santa Fe (also AAR reporting mark)

BO

 * bo – (s) Tibetan language (ISO 639-1 code)
 * BO
 * (i) Back Orifice
 * (i) Baltimore and Ohio Railroad
 * (s) Belarus (FIPS 10-4 country code)
 * (i) Biarritz Olympique (French rugby union club)
 * (s) Bolivia (ISO 3166 digram)
 * (i) Body odor
 * BO2k – (i) Back Orifice 2000
 * BOAC – (i) British Overseas Airways Corporation (predecessor of British Airways)
 * BoAML – Bank of America Merrill Lynch
 * BOAT – (p) Byway Open to All Traffic (pronounced as two syllables, "Bo-At")
 * BOB – (s) boliviano (ISO 4217 currency code) - Bank One Ballpark
 * BOBFOC – (a) Body Off Baywatch, Face Off Crimewatch (description)
 * BOBFOK – (a) Body of Barbie, face of Ken (description)
 * BOC
 * (i) British Orthodontic Society
 * BOC
 * BÖC – (i) Blue Öyster Cult
 * bod – (s) Tibetan language (ISO 639-2 code)
 * BOD – (i) Biochemical Oxygen Demand
 * BODMAS – (a) Brackets, Orders, Division, Multiplication, Addition, Subtraction
 * BOFH – (i) Bastard Operator From Hell
 * BOGA – (a) Bend Over and Grab Ankles
 * BOGOF – (a) Buy One, Get One Free
 * BOGSAT – (a) Bunch Of Guys Sitting Around a Table
 * BOHICA – (a) Bend Over Here It Comes Again
 * BOI
 * (i) Balance Of Investment
 * Basis Of Issue
 * BOL – (s) Bolivia (ISO 3166 trigram)
 * BOM
 * (a) Base Object Model
 * Bill Of Materials
 * Block of the Month quilting term
 * Business opportunity meeting
 * BOP (more than 20 alternatives)
 * (i) Balance of Payments
 * BOPB – (i) Biarritz Olympique Pays Basque (the complete name of the rugby club)
 * BOPD – (i) Barrel of Oil Per Day
 * BOQ
 * (i) Bill Of Quotations
 * Bachelor Officers' Quarters
 * Bank of Queensland
 * bos – (s) Bosnian language (ISO 639-2 code)
 * BOS – (i) Battlefield Operating System
 * BOT
 * (i) Balance of Trade
 * (s) Botswana (IOC and FIFA trigram, but not ISO 3166)
 * (i) Build Operate Transfer
 * (i) Bank of Thailand

BP

 * BP
 * (i) Battle Position
 * British Petroleum (today, BP does not officially stand for anything)
 * (s) Solomon Islands (FIPS 10-4 country code; from British Protectorate of the Solomon Islands)
 * Bp – (i) Bishop
 * BPD – (i) Bipolar Personality Disorder
 * BPM – (i) Beats Per Minute
 * BPMo – (i) Business Process Mobility
 * BPV
 * (i) Battlefield Planning Visualization
 * Bovine papillomavirus

BQ

 * BQ
 * (s) British Antarctic Territory (former ISO 3166 digram; merged with AQ in 1979)
 * Caribbean Netherlands (current ISO 3166 digram; based on the entity's alternate name of Bonaire, Sint Eustatius and Saba)
 * Navassa Island (FIPS 10-4 territory code)

BR

 * br – (s) Breton language (ISO 639-1 code)
 * Br – (s) Bromine
 * Br – "Best regards" used in valediction
 * BR
 * (s) Brazil (ISO 3166 digram; FIPS 10-4 country code) – Bihar (Indian state code)
 * (i) British Rail, previously British Railways
 * Break Ranks (marching band term)
 * BRA – (s) Brazil (ISO 3166 trigram)
 * BRAG – (a) Bicycle Ride Across Georgia
 * BRASS – Breathe, Relax, Aim, Sight, Squeeze (Acronym for using a rifle)
 * BRB
 * (s) Barbados (ISO 3166 trigram)
 * (i) "Be Right Back" (Internet chat abbreviation)
 * BRDM – (i) Boyevaya Razvedyvatelnaya Dosornaya Mashina (Russian Боевая Разведывательная Дозорная Машина, "Combat Reconnaissance Patrol Vehicle") †
 * bre – (s) Breton language (ISO 639-2 code)
 * BRFSS – (p) Behavioral Risk Factor Surveillance System ("burf-us", a CDC health survey covering the U.S. and its territories)
 * BRI
 * (i) Bathroom Readers Institute (publishers of series of "Uncle John's Bathroom Readers" books)
 * Belt and Road Initiative (China-led Asian transport initiative)
 * BRIC – (a) Brazil, Russia, India and China
 * BRICS – (a) Brazil, Russia, India, China and South Africa
 * BRIMS – (a) Behavior Representation In Modeling and Simulation (conference)
 * BRL – (s) Brazilian real (ISO 4217 currency code)
 * BRM – (i) Boyevaya Razvedyvatelnaya Mashina (Russian Боевая Разведывательная Машина, "Combat Reconnaissance Vehicle") †
 * BRN
 * (s) Bahrain (IOC trigram, but not FIFA or ISO 3166)
 * (s) Brunei (ISO 3166 trigram)
 * BRSB – (i) Battlefield Reasoning System Brianna
 * BRT – Bus Rapid Transit (alternatively Bus Rapid Transport)
 * BRU – (s) Brunei (IOC and FIFA trigram, but not ISO 3166)

BS

 * bs – (s) Bosnian language (ISO 639-1 code)
 * BS
 * (s) The Bahamas (ISO 3166 digram)
 * Bassas da India (FIPS 10-4 territory code)
 * Bachelor of Science degree
 * British subject
 * Bullshit
 * BSA
 * (i) Birmingham Small Arms (motorcycles company)
 * Boy Scouts of America
 * Brigade Support Area
 * BSatCoP – Benjamin Sniddlegrass and the Cauldron of Penguins
 * BSc
 * Bachelor of Science degree
 * BSD
 * (s) Bahamian dollar (ISO 4217 currency code)
 * (i) Berkeley Software Distribution (distinct from BSoD)
 * BSE – (i) Bovine Spongiform Encephalopathy, better known as mad cow disease
 * BSE – (i) Buku Sekolah Elektronik (screw thread),
 * BSF – (i) British Standard Fine (screw thread)
 * BSL
 * (i) Basketbol Süper Ligi (Turkish, "Basketball Super League"; top Turkish men's league)
 * British Sign Language
 * BSMB – (i) British Society for Matrix Biology
 * BSN
 * Baloncesto Superior Nacional (Spanish, "National Superior Basketball"; top Puerto Rican league)
 * Bank Simpanan Nasional (Malay, "National Savings Bank"; government-owned Malaysian bank)
 * BSNL
 * Bharat Sanchar Nigam Limited
 * (i) Bachelor of Science in Nursing
 * BSoD – (i) Blue Screen of Death (distinct from BSD)
 * BSP
 * (i) Between-Show Promotion
 * Binary Space Partitioning
 * Board Support Package
 * British Standard Pipe (screw thread)
 * (p) Business-sponsored
 * Bone sialoprotein
 * BSS
 * Block Starting with Symbol – see .bss
 * Boxed Set Syndrome – where one starts watching a boxed set of DVDs and just can't stop until you've watched them all
 * BST
 * (i) Binary search tree
 * Blended Sales Tax
 * (p) Bovine somatotropin
 * (i) British Summer Time
 * BSW
 * Bachelor of Social Work degree
 * (i) British Standard Whitworth (screw thread)
 * Blind Spot Warning, see Blind spot monitor
 * BSX – (i) Bendigo Stock Exchange

BT

 * Bt
 * (i) Baronet
 * Bacillus thuringiensis
 * BT
 * (i) Baal teshuva (Hebrew, "master of return") – used to describe a Jew who adopts Orthodox Judaism as an adult
 * Bathythermograph
 * (s) Bhutan (FIPS 10-4 country code; ISO 3166 digram)
 * (i) BitTorrent
 * British Telecom, the former name of the company now known as BT Group
 * Bluetooth
 * BTDT – (i) Been There, Done That
 * Bti – (i) Bacillus thuringiensis israelensis
 * BTID – (i) Battlefield Target Identification Device
 * BTIS – (i) Battlefield Target Identification System
 * BTN
 * (s) Bhutan (ISO 3166 trigram)
 * Bhutanese ngultrum (ISO 4217 currency code)
 * BTO – (i) Built To Order
 * BTP – (i) British Transport Police
 * BTR – (i) Bronetransporter (БТР = Бронетранспортер "(Heavy) Armoured (Personnel) Transporter") †
 * BTS
 * (p) Bangtan Sonyeondan (Korean, 방탄소년단; literally "Bulletproof Boy Scouts"), expansion of the name of South Korean band BTS
 * (i) Base transceiver station
 * Beyond the Scene, promoted by the band BTS as an alternate expansion of its initialism
 * Build to stock (production approach)
 * Bureau of Transportation Statistics, U.S. federal agency
 * Business Training Systems, original name of the Swedish professional services firm BTS Group
 * BTU – (i) British Thermal Unit
 * BTW – (s) By The Way

BU

 * BU – (s)
 * Bulgaria (FIPS 10-4 country code) –
 * Burma (ISO 3166 digram; obsolete since 1989)
 * BUAV – (i) British Union for the Abolition of Vivisection
 * BUG-E – (a) Battlefield Universal Gateway Equipment ("buggy")
 * bul – (s) Bulgarian language (ISO 639-2 code)
 * BUL – (s) Bulgaria (IOC and FIFA trigram, but not ISO 3166)
 * BUNO or BuNo – (p) Bureau Number (aircraft serial number)
 * BUR – (s) Burma (ISO 3166 trigram; obsolete since 1989)

BV

 * BV – (i)
 * Background Vocals –
 * Battlefield Visualization – (s)
 * Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
 * BVB
 * (p) Ballspielverein Borussia 09 e.V. Dortmund, the full German name of the football club known in English as Borussia Dortmund
 * Bursa de Valori București (Romanian for Bucharest Stock Exchange)
 * BVD – (i) Bradley, Voorhees & Day (underwear manufacturer)
 * BVR – (i) Beyond Visual Range
 * BVT – (s) Bouvet Island (ISO 3166 trigram)

BW

 * B&amp;W – (i) Babcock & Wilcox – Black and White – Bowers & Wilkins
 * BW – (s) Bring Wedges (ISO digram)
 * BW – (s) Botswana (ISO 3166 digram)
 * BWA – (s) Botswana (ISO 3166 trigram)
 * BWARS – (a) Bees, Wasps & Ants Recording Society
 * BWC – (p) Biological and Toxin Weapons Convention
 * BWP – (s) Botswana pula (ISO 4217 currency code)
 * BWR – (i) Boiling-Water Reactor

BX

 * BX – (p) Base eXchange – (s)

BY

 * BY – (s)
 * Burundi (FIPS 10-4 country code) –
 * Belarus (ISO 3166 digram)
 * BYOB – (i) Bring Your Own Bottle (or "beer", "beverage", or "booze") (multiple, but similar, meanings)
 * BYOC – (i) Bring Your Own Computer (play on BYOB)
 * BYOF – (i) Bring Your Own Flask
 * BYR – (s) Belarusian rubel (ISO 4217 currency code)
 * BYS – (s) Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
 * BYU – (i) Brigham Young University

BZ

 * BZ – (s) Belize (ISO 3166 digram)
 * BZD – (s) Belize dollar (ISO 4217 currency code)
 * BZP – (p) Benzylpiperazine