B41 or B-41 may refer to:
*
D41 road (Croatia)
D41 is a state road in the central Croatia connecting Križevci to Koprivnica and Gola border crossing to Hungary. The road is long.
The road, as well as all other state roads in Croatia, is managed and maintained by Hrvatske ceste, a state- ...
, a Croatian expressway connecting Vrbovec to the Hungarian border
*
Bundesstraße 41, a
federal highway in Germany
*
B41 (New York City bus)
The B41 is a bus route that constitutes a public transit line operating in Brooklyn, New York City, running along Flatbush Avenue between Downtown Brooklyn and Marine Park. The B41 is operated by the MTA New York City Transit Authority. Its pr ...
, a bus route in Brooklyn, New York City, United States
*
B41 nuclear bomb
The B-41 (also known as Mk-41) was a thermonuclear weapon deployed by the United States Strategic Air Command in the early 1960s. It was the most powerful nuclear bomb ever developed by the United States, with a maximum yield of . The B-41 was ...
, a thermonuclear weapon deployed by the United States in the early 1960s
*
HLA-B41, an HLA-B serotype
*
B-41 Liberator, an American aircraft during World War II
*
B41, Vietnamese designation of RPG-7 rocket-propelled grenade
{{Letter-NumberCombDisambig