B Line

B Line, B-Line or Line B may refer to the following:

Transportation

B (New York City Subway service), a subway route in New York
B (SEPTA Metro), one of three subway lines in Philadelphia.
B-Line (Norfolk Southern), a freight-rail line in Virginia
Green Line B branch, a light-rail line in Boston, Massachusetts
- B-Line Rivalry, a sports rivalry between Boston College and Boston University
B Line (Los Angeles Metro), a rapid transit line in Los Angeles County, California
B (Los Angeles Railway), former streetcar service in Los Angeles, US
RapidRide B Line, a bus route in King County, Washington
B Line (RTD), a light-rail system in Denver, Colorado
B Line (Valley Metro Rail), a light rail line in Phoenix, Arizona
Butte Regional Transit, a bus system in Butte County, California
Metro B Line (Minnesota), a planned rapid bus line in Minneapolis-Saint Paul
- Riverview Corridor, previously known as the B Line
B (AC Transit), a bus route in the San Francisco Bay Area

Line B (Buenos Aires Underground), an underground line in Buenos Aires, Argentina
B-Line (Hamilton), a proposed light-rail line in Hamilton, Ontario
Line B (Prague Metro), a subway route in Prague, Czech Republic
B-Line (Sydney), a bus-rapid-transit system in Sydney, Australia
B-Line (Vancouver), a bus-rapid-transit system in Vancouver, British Columbia
Mexico City Metro Line B, a rapid-transit line in Mexico City
fr:Ligne B du métro de Rennes, a future subway route in Rennes, France