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&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