DB

DB, dB, or db may refer to:

In science and technology

• Decibel (dB), a logarithmic unit of measurement in acoustics and electronics
• Dubnium (Db), a chemical element
• DB connector, a size of D-subminiature electrical connector
• Database (DB), an organized collection of data
  • Berkeley DB, a cross-platform embedded database library
  • .db, a database file extension
• dyne:bolic GNU/Linux, a distribution of the Linux operating system

In arts and entertainment

• D♭ (musical note)
• The dB's, a band in the 1980s
• DJ DB, a New York-based DJ
• Daily Bugle, a fictional New York City newspaper

Places

• DB Draw, a bridge over the Passaic River, US
• Daytona Beach, Florida
• Discovery Bay, a residential development in Hong Kong
• Dobyns Bennett High School in Kingsport, Tennessee, US
• Dâmboviţa County in Romania, ISO 3166-2:RO code

In business

• DB (car), a French automobile maker
• DB Breweries, a New Zealand company
• DB Medialab, a Norwegian online media company owned by the newspaper Dagbladet
• DB Networks, an American information security company
• DB Records, a record label in Atlanta, Georgia, US
• David Brown (entrepreneur), one-time owner of car manufacturer Aston Martin, several of whose products carried his initials
• Defined benefit pension plan, a scheme for retirement plans
• Deutsche Bahn, a German railway company since 1994
• Deutsche Bank, a German bank
• Deutsche Bundesbahn, the national railway company of the Federal Republic of Germany from 1949 until 1994
• Diamond Bank, of Nigeria
• Doing Business Report, by the World Bank Group
• Brit Air, IATA airline code

Other uses

• ȸ, the db-digraph a ligature of "d" and "b" in African linguistics
• D. B. Cooper, a hijacker
• Defensive back, a position in American football and Canadian football