B23 may refer to:
* A human nucleolar protein also known as
NPM1
Nucleophosmin (NPM), also known as nucleolar phosphoprotein B23 or numatrin, is a protein that in humans is encoded by the ''NPM1'' gene.
Function
NPM1 is associated with nucleolar ribonucleoprotein structures and binds single-stranded and ...
* The 2.3L, pre-revision variant of the
Volvo Redblock engine
The Volvo B21 is a slanted Inline-four engine, straight-four engine first used in the Volvo 200 series, meant to replace the Volvo B18 engine#B20, B20. The B21 and all derived engines are often referred to as ''red block'' engines for the red pai ...
*
Bundesstraße 23
The ''Bundesstraße'' 23 (abbr. B23) is a German federal highway (''German:'' Bundesstraße) in Bavaria that runs about 59.2 kilometres, from Peiting to the Austrian border near Garmisch-Partenkirchen. This highway (partially), along with the Bu ...
, federal highway in Germany
*
B-23, national highway in Catalonia
*
B-23 Dragon
The Douglas B-23 Dragon is an American twin-engined bomber developed by the Douglas Aircraft Company as a successor to (and a refinement of) the Douglas B-18 Bolo, B-18 Bolo.
Design and development
Douglas proposed a number of modifications des ...
, a 1930s bomber aircraft
*
B-23 (Michigan county highway)
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