# Bo

Bo or BO may refer to

## Arts and entertainment

* Box office, where tickets to an event are sold, and by extension, the amount of business a production receives
* BA:BO, 2008 South Korean film
* Bo (film), a Belgian film starring Ella-June Henrard and directed by Hans Herbots
* Bo (instrument), a Chinese cymbal
* Bo, a Greek rapper
* Bō: Path of the Teal Lotus, a platform game
* Call of Duty: Black Ops, a first-person shooter video game
* Blood Omen: Legacy of Kain, first in the Legacy of Kain video game series

## People

* Bo (given name), name origin, plus a list of people and fictional characters with the name or nickname
* Bo (surname), name origin, plus a list of people with the surname
** Bo (Chinese surname), Chinese family names
** Bő (genus), Hungarian medieval noble clan
* Bø (disambiguation), which includes several people with the surname
* Bo people (China), a nearly extinct minority population in Southern China
* Bo people of Laos, see List of ethnic groups in Laos
* Bo people (Andaman), a recently extinct group in the Andaman Islands

## Places

* Bő, Hungary, a village
* Bø (disambiguation), various places in Norway
* Bo, Chanthaburi, Thailand
* Bo, Hòa Bình, Vietnam
* Bo, Sierra Leone, a city
* Bo, Yaba, Burkina Faso
* Le Bô, a commune in the Calvados departement, France
* Palazzo Bo, or "Il Bo", the historic seat of the University of Padua in Italy
* Bo (亳; bó, Bó), the original capital of Tang of Shang, who founded China's Shang Dynasty; its location is disputed. Two strong candidates are Yanshi Shang City and Zhengzhou Shang City

## Religion

* Bo or Bodhi Tree
* Bo (parsha), fifteenth weekly Torah reading

## Science and mathematics
### Biology and medicine

* Bacterial overgrowth, a medical disorder of malabsorption
* Bowel obstruction
* Bronchiolitis obliterans
* BO strain of the Caenorhabditis elegans var. Bergerac model worm
* Ficus religiosa, a.k.a. Bo-Tree, a species of Asian fig

### Mathematics, chemistry and physics

* $\operatorname {BO} (n)$, Classifying space for orthogonal group
* $\operatorname {BO}$, Classifying space for infinite orthogonal group
* In chemistry and physics, the Born–Oppenheimer approximation

## Codes

* Bolivia (ISO 3166-1 country code)
** .bo, Internet country code top-level domain (ccTLD) for Bolivia
* Belarus, obsolete NATO and FIPS country codes
* Baltimore and Ohio Railroad (reporting mark BO)
* Bouraq Indonesia Airlines (IATA airline code BO)
* BO, UIC classification for the railroad locomotive wheel arrangement 0-4-0, in the Whyte notation
* "bo", Standard Tibetan ISO 639-1 language code

## BO

* Body odor or B.O.
* Back Orifice, remote administration software
* Barrel of Oil, sometimes used in place of bbl
* Beneficial owner, in property law
* Biarritz Olympique, a French rugby union club
* Business Objects (company), an enterprise software company

## Other uses

* Bō, or east Asian quarterstaff, a staff weapon used in the martial art Bōjutsu
* Bo (title), a Chinese title typically translated as "count"
* Bō, a Japanese honorific suffix
* Bó (bank), a banking brand in the United Kingdom
* Bo (dog) (2008–2021), a pet belonging to U.S. President Barack Obama
* Bojagi or bo, a Korean wrapping cloth
* Bo School, a secondary school in Bo, Sierra Leone
* Bo language (disambiguation)