B Street or "B" Street is the second of a sequence of alphabetical streets in many cities.
It may refer to: Constitution Avenue, Washington, D.C., known originally and also as B Street Independence Avenue (Washington, D.C.), also known as B Street South, or South B Street B Street Theatre, Sacramento, California B Street District, Livingston, Montana, a historic district listed on the National Register of Historic Places
See also Avenue B (disambiguation)