B42 may refer to:
* The
Gutenberg Bible
The Gutenberg Bible, also known as the 42-line Bible, the Mazarin Bible or the B42, was the earliest major book printed in Europe using mass-produced metal movable type. It marked the start of the "Printing Revolution, Gutenberg Revolution" an ...
or the "42-line Bible"
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Bundesstraße 42, a German road
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B42 (New York City bus) in Brooklyn
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HLA-B42, an HLA-B serotype
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B-42 Mixmaster, an American aircraft
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