BI

BI, Bi or bi may refer to:

Language

• Bi-, a number prefix denoting two, as in:
  • Air Sylphe Bi 582, a French design for a two-seat French powered parachute
  • Bisexuality, attraction to both men and women, or any generalization of that
  • See also: bipolar (disambiguation)
• Bi (cuneiform), a sign representing a syllable such as "bé", "pí", or "kaš"
• Bi (kana), in syllabic Japanese script
• Bi (surname) (畢/毕), a Chinese family name
• BI, the ISO 639-1 code for the Bislama language, an English-based creole in Vanuatu
• Bahasa Indonesia, the Indonesian language, of the Riau Malay dialect continuum within the Austronesian family

Places

• Barrie—Innisfil, two similar or identical electoral districts in Ontario at different levels of government
  • The pre-2023 name of Barrie South—Innisfil, a Canadian federal electoral district
  • Barrie—Innisfil (provincial electoral district)
• Burundi, by World Meteorological Organization and ISO 3166-1 country code

Transportation

• B.I — see List of B1 aircraft § B.I
• Braniff International Airways, a former airline
• British India Steam Navigation Company, 1856–1972 ship owner and ship operator, named "Calcutta and Burmah Steam Navigation Company" until 1862
• BI, the IATA code of Royal Brunei Airlines
• Bereznyak-Isayev BI-1, a Soviet short-range rocket-powered interceptor developed during WWII

Government, business, and computing

• Bilhete de identidade (Mozambique), the Mozambican national identity card
• Bilhete de Identidade (Portugal), the former Portuguese national identity card, established 1919, phasing out since 2008
• Macau Resident Identity Card (Portuguese: Bilhete de Identidade de Residente, BIR), in part replacing the Bilhete de Identidade Cidadão Estrangeiro (BICE)
• Bureau of Immigration (Philippines), a government agency in the Department of Justice of the Philippines
• Bank Indonesia, the central bank of Indonesia
• Berggruen Institute, Los Angeles-based think tank, researching governance, economics, geopolitics, and technology
• BI (short for "British Invisibles"), the 1990/1998–2001 name of International Financial Services, London (IFSL), a 1968–2010 trade association
• Business Insider, a New York City-based multinational financial and business news website
• BI Norwegian Business School, originally Bedriftsøkonomisk Institutt, a teaching and research organization, with its main campus in Nydalen, Oslo
• Business interruption insurance or business income insurance
• Batteries Included (company), 1978–1987 computer software and hardware company based in the Toronto area
• Business intelligence, data analysis and management of information to inform strategies and operations
• Business informatics, the combined discipline of information technology, economics, and administration
• Microsoft Power BI, a software product for interactive data visualization, database management, and data modeling
• Breidbart Index, a cancel index measuring Usenet message repetition to detect newsgroup spam
• .bi, the Internet top-level domain for Burundi

Science and medicine

• Biot number (Bi), a dimensionless quantity in heat transfer calculations
• Bismuth (symbol Bi), the chemical element with atomic number 83
• Burning Index, a number used by NOAA to quantify the effort needed to contain a fire
• Boehringer Ingelheim, a German pharmaceutical firm
• Brain injury, the destruction or degeneration of brain cells

Music

• Bi, a stage name of Jung Ji-hoon (born 1982), also known as Rain (entertainer), South Korean singer, songwriter, dancer, actor, and record producer
• B.I (rapper) (Korean: 비아이) (born Kim Han-bin, 1996), South Korean songwriter, rapper, singer and record producer
• Bi (Astyplaz album), 2008
• Bi (Kevin Johansen album), 2012
• "Bi" (song) by Living Colour on Stain (1993)

Other uses

• Bi (jade), a type of circular ancient Chinese artifact
• "B.I.: Bartificial Intelligence", a segment from the cartoon The Simpsons, S17 E4 "Treehouse of Horror XVI" (2005)
• Bohemia Interactive a.s., a Czech developer and publisher of video games
• Brandon Ingram (born 1997), American professional basketball player, who joined a Canadian team, the Toronto Raptors, in 2025
• Bishop Ireton High School, a Catholic high school in Alexandria, Virginia, US

See also

• All pages with titles beginning with Bi
• All pages with titles beginning with BI
• All pages with titles containing BI
• Bibi (disambiguation)
• BII (disambiguation)
• Same or similar appearance:
  • Ы, Yery or Yeru, a letter in the Cyrillic script
  • B1 (disambiguation)
  • Bl (disambiguation)
  • el:ΒΙ
  • uk:Ві
  • chr:ᏏᏆ
  • ml:ദീ
• Same or similar pronunciation:
  • By (disambiguation)
  • Bye (disambiguation)
  • Buy (disambiguation)
  • Bie (disambiguation)
  • BIH (disambiguation)