B3
B3 , B 3 or B-3 stands for:
- Vitamin B3, chemical name: niacin
- Bundesstrasse 3 in Germany
- Donau Strasse , former federal highway in Austria
- B3 (Cyprus) , main road in Cyprus
- B3 (Kenya) , trunk road in Kenya
- National road B3 in Namibia
- VW Passat B3 (1988-1993)
- Audi 80 B3
- Alpina B3 , a car from Alpina Burkard Bovensiepen
- B3 (chair) , tubular steel frame chair by designer Marcel Breuer in the Bauhaus style, approx. 1925
- Bellview Airlines , Nigerian airline (IATA code)
- Bayern 3 , radio station
- B3 (band) , a boy band from New York
- B3 (German band) , band project around the Berlin musician and music producer Andreas Hommelsheim
- DIN B3, a paper format (standards: DIN 476 / ISO 216), see paper format
- a resistance class for vehicles, see special protection vehicle
- a class of easily inflammable building materials according to DIN 4102 part 1, see building material class
- the model name of a Hammond organ
- B-3, a sheepskin jacket of the US Army Air Force from the time of World War II, see flight jacket
- Salary group for civil servants and soldiers in Germany, see salary order B #Besoldungsgruppe B 3
- B3 course, training as a group leader in German professional fire services
- B-3, the next US Air Force stealth bomber: Long Range Strike Bomber
- B3 (Paralympics) , functional classification for athletes in Paralympic sports
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