B (disambiguation)
Template:Wiktionary B is the second letter of the Latin alphabet.
B may also refer to:
Science, technology, and mathematics
Astronomy
- Astronomical objects in the Barnard list of dark nebulae (abbreviation B)
- Latitude (b) in the galactic coordinate system
Biology and medicine
- Haplogroup B (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup
- Haplogroup B (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup
- Blood type B
- ATC code B Blood and blood forming organs, a section of the Anatomical Therapeutic Chemical Classification System
- Vitamin B
- Hepatitis B
- Berlin Botanical Garden and Botanical Museum, assigned the abbreviation B as a repository of herbarium specimens
Computing
- B (programming language)
- B-Method, for computer software development
- B-tree, a data structure
- Bit (b)
- Byte (B)
- Template:Tag, an HTML element denoting bold text
Physical and chemical quantities and units
- One of the reciprocal lattice vectors (b*)
- Breadth (b); see length
- Impact parameter (b)
- Molality (b)
- Barn (unit) (b), a unit of area
- Magnetic field (B)
- Napierian absorbance (B)
- Rotational constant (B)
- Second virial coefficient (B)
- Susceptance (B)
- Bel (B), a logarithmic unit equal to ten decibels
Other uses in science, technology, and mathematics
- B, a modal logic
- bottom quark (symbol: b), an elementary particle
- B meson, a type of meson
- Boolean domain (), in mathematics
- Boron, symbol B, a chemical element
- Bulb (photography), a shutter-speed setting
- B battery, a battery used to provide the plate voltage of a vacuum tube
- B horizon, a layer of soil commonly known as subsoil
- B, B+ and B−, expressions of buoyancy in convective available potential energy
Linguistics
- В, a letter of the Cyrillic alphabet
- Voiced bilabial stop (b, in the International Phonetic Alphabet)
Arts and media
Music
Musical notation
- B (musical note)
- B major, a scale
- B minor, a scale
- B major chord, Chord names and symbols (popular music)
- Template:Music Flat (music), a note lower in pitch by a semitone
Performers
- Beyoncé
- B, member of Superorganism (band)
Recordings
- B (BamBam EP), an extended play by BamBam
- B (Battles EP), an extended play by Battles
- B (I Am Kloot album), a compilation album by I Am Kloot
- b (Moxy Früvous EP), an extended play by Moxy Früvous
- "b", an Iamamiwhoami song
- "B", a song by Todrick Hall from his 2018 album Forbidden
Other media
- /b/, a board on 4chan
- b (newspaper), a free daily, tabloid sized newspaper, published by The Baltimore Sun
- Codex Vaticanus Graecus 1209, an ancient bible
- Rajawali Televisi, previously named B Channel, a television channel in Indonesia
- B, the production code for the 1963–64 Doctor Who serial The Daleks
- B, a character in Total Drama: Revenge of the Island
- "B" Is for Burglar, the second novel in Sue Grafton's Alphabet Mystery series, published in 1985
Places
- Belgium, on the vehicle registration plates of the European Union
- Bucharest, on the vehicle registration plates of Romania
Sport
- Australian rules football positions#Full back, in Australian Rules football
- B, often used after the name of football clubs to denote a reserve team
Transportation
- B (New York City Subway service)
- B Line (Los Angeles Metro)
- Line B (Buenos Aires Metro)
- B (S-train), in Copenhagen
- RER B, a line in the RER of Paris
- The West Japan Railway Company service symbol for:
- Bundesstraße (federal highway) in Austria and Germany (abbreviation B)
- Bayshore Route of Shuto Expressway in Japan, numbered as route B
- Mexico City Metro Line B
Template:AnchorOther uses
- B (grade), for evaluation of students' work
- B (bank), a banking brand in the United Kingdom
- Barnabites (Template:Langx), a religious order abbreviated to the postnominal B.
- Bravo, the military time zone code for UTC+02:00
- Brutus, a Roman cognomen (abbreviation B)
- Farmall B, a tractor produced by International Harvester from 1939 to 1947
- Dominical letter B for a common year starting on Saturday
- B, a soft grade of pencil lead