B117 most often refers to B.1.1.7, a variant of COVID-19 virus SARS-CoV-2.
B117 may also refer to:
B. 117, a musical composition by Dvořák ASTM B117, a corrosion standard Blériot 117 (B-117), a 1920s airplane
See also
Lockheed F-117 Nighthawk, a fighter-bomber BOLT-117, a laser-guided bomb 117 (disambiguation) B17 (disambiguation)