DB may stand for:

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
• .db, a database file extension

In entertainment:

• Daily Bugle, a fictional New York City newspaper
• The dB's, a power pop band from the 1980s

In locations:

• Discovery Bay, a residential development in Hong Kong
• Dobyns Bennett High School, a high school in Kingsport, Tennessee, USA

In corporate:

• DB Breweries, a New Zealand company
• DB (car), a French automobile maker
• DB Medialab, a Norwegian online media company owned by the newspaper Dagbladet
• DB Records, a label in Atlanta, Georgia, USA
• Deutsche Bahn, the major German railway company
• Deutsche Bank, a German bank
• Deutsche Bundesbahn, the national railway company of the former West Germany

In phonetics:

• ?, the db-digraph a ligature of "d" and "b" in African linguistics

See also

• Dragon Ball, a Japanese media franchise
• DBMS or database management system

cs:DB da:DB de:DB eo:Db fr:DB ko:DB it:DB nl:DB ja:DB no:DB pl:DB pt:DB ksh:DB (Watt ?ßß datt?) sk:DB fi:Db sv:DB zh:DB