B44

B44 may refer to:


 * Bundesstraße 44, a federal highway in Germany
 * B44 (New York City bus), a public transit line in Brooklyn, New York City, United States
 * HLA-B44, a HLA-B serotype
 * XB-44 Superfortress, an aircraft
 * b4-4, a Canadian boy band
 * BSA B44, a British motorcycle
 * BSA B44 Shooting Star, a British motorcycle