B45 or B-45 may refer to:
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Bundesstraße 45
The Bundesstraße 45 is a German federal highway. It branches off the Bundesstraße 3 in Wöllstadt and leads south, goes through the city of Hanau, traverses the Odenwald and ends in Sinsheim.
The strip between Hanau and Dieburg
Dieburg () i ...
, a German road
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B45 (New York City bus)
The B45 is a bus route that constitutes a public transit line operating in Brooklyn, New York City, mainly along Atlantic Avenue, Washington Avenue, Sterling Place, and St. Johns Place between Downtown Brooklyn and Crown Heights. It is operate ...
, in Brooklyn, USA
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HLA-B45
HLA-B45 (B45) is an HLA- B serotype
A serotype or serovar is a distinct variation within a species of bacteria or virus or among immune cells of different individuals. These microorganisms, viruses, or Cell (biology), cells are classified to ...
, a HLA-B serotype
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North American B-45 Tornado
The North American B-45 Tornado is an early American jet bomber designed and manufactured by aircraft company North American Aviation. It has the distinction of being the first operational jet bomber to enter service with the United States Air ...
, a U.S. Air Force bomber aircraft of the late 1940s
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