BS, B.S., Bs, bs, or B's may refer to:

• BS-, a prefix for all games broadcast for the Satellaview modem via the Japanese Broadcasting Satellite system
• "B.S." (song), a song by Jhené Aiko from the album Chilombo
• Team BS, French music collective founded by La Fouine that includes Fababy, Sultan and Sindy
• NHK's satellite broadcaster mark, NHK-BS
• Backstage (magazine)
• Baritone saxophone, a musical instrument
• Bullshit (card game), a card game

• Banco Sabadell, a bank in Spain
• Banco Santander, a bank headquartered in Spain
• Beijing Subway, a transit system
• BellSouth, a United States telephone company
• Better Serbia (Bolja Srbija), a political party in Serbia
• Biuro Szyfrów ("Cipher Bureau"), a Polish cryptography and signals intelligence agency known for its work on German Enigma ciphers in the 1930s
• Boy Scouts; see scouting
• British International Helicopters (IATA code BS)
• British Shipbuilders, a public corporation founded in 1977
• British Standards, produced by BSI Group
• British Sugar, a division of Associated British Foods
• Building surveyor, a professional in the construction industry concerned with setting out reference points and markers
• Nonpartisan Local Government Activists (Bezpartyjni Samorządowcy) a political party in Poland

• Venezuelan bolívar, currency of Venezuela
• Bolivian boliviano, currency of Bolivia

• BS postcode area, in Bristol, England
• The Bahamas, by ISO 2-letter country code and license plate code
  • .bs, country-code Top Level Domain for the Bahamas
• Banská Štiavnica, a city in Slovakia with the vehicle registration plate BS
• Basel-Stadt, a Swiss canton, officially abbreviated to BS
• Beersheba or Be'er Sheva (Hebrew: בְּאֵר שֶׁבַע), a city in the Southern District of Israel
• Braunschweig, a town in Germany, also known in English as Brunswick, with the vehicle registration plate BS
• Brescia, a city and province of Italy with the vehicle registration plate BS
• Suwałki, a city in Poland with the vehicle registration plate BS

• Bs (programming language)
• Backspace, and the backspace control character in the C0 control code set
• Base transceiver station, or base station, a node in a mobile telephony network
• Bubble sort, a sorting algorithm
• Boot sector, a memory region containing machine code, generally used for booting an operating system
• BotServ, an IRC bot server
• BraveSentry, a clone of the SpySheriff malware program
• Broadcasting Satellite (Japanese), a system of Japanese communication satellites

• Bachelor of Surgery, an academic degree
• Bernard–Soulier syndrome, a rare autosomal recessive coagulopathy, that is caused a deficiency of glycoprotein Ib
• Bartter syndrome, a rare inherited disease which results in hypokalemia

• Bachelor of Science, an academic degree
• Behavioural sciences
• Brake-specific fuel consumption, a measure of engine fuel efficiency
• Bright Star Catalogue, which lists all stars of stellar magnitude 6.5 or brighter
• Bronshtein and Semendyayev, a handbook of mathematics
• Strange B meson, a subatomic particle, symbol
  B
  _s
• Brier score, a measure for the accuracy of probabilistic predictions
• The Köppen climate classification code for a semi-arid climate

• The Bs, a 19th-century cricket team
• British Shooting, the governing body for target shooting in Great Britain
• British Showjumping, the governing body for showjumping in Great Britain
• Blocked Shot, in basketball statistics, see Block (basketball)
• Blown Save, in baseball statistics, see Save (baseball)
• Oakland Ballers, American baseball team nicknamed B's

• Bullshit, a phrase denoting something worthless
• Bengali Sambat, used to mark years in the Bengali calendar
• Big Sister (disambiguation)
• Bikram Sambat, a calendar used in Nepal
• Bosnian language (ISO 639 alpha-2 code bs)
• Broad Street (disambiguation)
• Bronze Star Medal, a United States military award
• Ordo Basilianus Ssmi Salvatoris Melkitarum (Institute of consecrated life), a Roman Catholic monastic Order

• B (disambiguation), where "Bs" may refer to the plural of "B"