B8

B8, B VIII or B-8 may refer to:
* B8 (bronze), an alloy used in cymbals
* B8 (New York City bus) serving Brooklyn
* b8 (spam filter), a Bayesian filter implemented in PHP
* Bavarian B VIII, a German steam locomotive model
* Bensen B-8, a 1955 United States small single-seat autogyro
* HLA-B8, an HLA-B serotype
* HMS B8, a B-class submarine of the Royal Navy
* Mazda B8, a piston engine
* Vitamin B8, a name sometimes used for inositoland also :
* the IATA code for Eritrean Airlines
* a subclass of B-class stars
* The Fokker XB-8, a bomber prototype built for the United States Army Air Corps
* an international standard paper size (62×88 mm), defined in ISO 216
* the musical note 7 keys above a standard Grand Piano
* the postcode for Saltley, England

Roads named B8:

* B8 (Croatia), an expressway, part of the Istrian Y highway network in Croatia
* B8 road (Cyprus)
* B8 road (Namibia)
* Bundesstraße 8, a road in Germany