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 — see 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 (, BIR), in part replacing the (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 , 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) () (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

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)