The Myrtle Avenue Line is a surface transit line on Myrtle Avenue in Brooklyn, New York City, United States.
The Blackburn B-54 and B-88 were prototype carrier-borne anti-submarine warfare aircraft of the immediate post-Second World War era developed for the Royal Navy's Fleet Air Arm (FAA).
The Boeing B-54 was an American strategic bomber designed by Boeing for use by the United States Air Force.
The Bundesstraße 54 or B54 is a German federal highway running in a north–south direction from the Dutch border near Gronau to the Hessian state capital Wiesbaden.
HLA-B54 (B54) is an HLA-B serotype.