BD, Bd or bd may refer to:
In arts and entertainment
- B. D. (Doonesbury), a major character in the Doonesbury comic strip
- Bande dessinée (or "bédé"), a French term for comics
- Bass drum, in sheet music notation
- Brahe Djäknar, a Finnish choir
- Broder Daniel, a Swedish indie pop band
- Ben Drowned, a web serial and web series, focused on the character of the same name
- ВD, shorthand name for the Russian gaming magazine, Velikij Drakon, where the "В" character is actually the Russian letter "ve".
- Bette Davis's production company
In business
Business / Technology
- Big data, a marketing term for technology of large data sets
- Business day, a day of the week on which business is conducted
- Business development, techniques aimed at attracting customers and penetrating markets
- Business directory, a website or printed listing of information which lists all businesses within some category
Businesses
- Bad Dragon, an American manufacturer of fantasy-themed sex toys
- Becton Dickinson (BD.com), an American manufacturer of medical supplies
- BMI (airline), or British Midland Airways (IATA airline code BD until 2012)
- Building Design, a British architectural magazine
- Cambodia Bayon Airlines (IATA airline code BD from 2014)
Places
- BD postcode area, UK, for Bradford, West Yorkshire, and the surrounding area
- Bangladesh, (ISO 3166-1 country code BD)
- .bd, the country top-level domain for Bangladesh
- Bermuda, where "BD" is the FIPS PUB 10-4 territory code and obsolete NATO country code
- Brunei Darussalam, where "BD" is the World Meteorological Organization country code
In science and technology
In computing
- Baud (Bd), an information unit
- %BD, the URL encoded version of the one half (½) symbol
- Big data, data sets that are so large or complex that traditional data processing applications are inadequate
- Blu-ray Disc, a high density blue laser optical disc format, or the successor of DVD
- BD+, a component of the Blu-ray Disc Digital Rights Management system
In biology and medicine
- Batrachochytrium dendrobatidis, a fungus that causes the fatal amphibian disease chytridiomycosis
- BD butterfly, Callicore cynosura
- Bipolar disorder, a mood disorder
- "Bis die" (Latin for "twice a day"; also Bid (Medical): "bis in diem") an indication that a medication needs to be taken twice a day
Other uses in science and technology
- Bonner Durchmusterung, a 19th-century star catalog
Other uses
- Bachelor of Divinity, an academic degree
- Battle Dress, a British military uniform
- Bloor-Danforth, a subway line in Toronto, Canada
- Bondage (BDSM) and Discipline (BDSM), in sexual role-play