B7

B7, B.VII, B07 or B-7 may refer to:

Vehicles and transportation

 * Alpina B7, a luxury sedan
 * B7 (New York City bus), serving Brooklyn
 * Bundesstraße 7, a German Bundesstraße (Federal Highway)
 * Bavarian B VII, an 1868 German experimental locomotive
 * DLR B07 stock, a passenger train on the Docklands Light Railway in London, UK
 * NSB B7 (Class 7), Norwegian railway carriages
 * HMS B7, a B-class submarine of the Royal Navy
 * Blackburn B-7, a British aircraft
 * Lohner B.VII, an aircraft
 * Douglas Y1B-7, a bomber of the United States Army Air Corps
 * UNI Airways (Taiwan) IATA airline designator
 * Boeing 777
 * Bensen B-7, a 1955 United States small rotor kite
 * LNER Class B7, a class of British steam locomotives

Science

 * B7 (protein), a protein in the immune system
 * HLA-B7, an HLA-B serotype
 * Vitamin B7, another name for biotin
 * A subclass of B-class stars
 * Boron-7 (B-7 or 7B), an isotope of boron

Other

 * B7, a diesel fuel containing 7% biodiesel
 * B7, the second highest note on a piano, nearly two octaves above Soprano C
 * B7, an international standard paper size (88×125 mm), defined in ISO 216
 * B7 Baltic Islands Network, a cooperation between governments of seven islands in the Baltic Sea
 * Blake's 7, a BBC science fiction television series first broadcast 1978–1981
 * B7 (album), 2020 album by Brandy Norwood