D Line

D Line may refer to:

Transportation

• Line D (Buenos Aires Underground), an underground line in Buenos Aires, Argentina
• D Line (Los Angeles Metro), a rapid transit line in Los Angeles County, California
• Line D (Prague Metro), a subway route under construction in Prague, the Czech Republic
• Line D (Rome Metro), potential line of the Rome Metro system
• D Line (RTD), a light rail line in Denver
• Green Line D branch, a light rail line in Boston
• D (New York City Subway service), a subway route in New York
• RapidRide D Line, a bus route in Seattle, Washington, United States
• Metro D Line (Minnesota), a bus rapid transit line in Minneapolis, Minnesota, United States
• D (Los Angeles Railway), a former streetcar line in Los Angeles, California
• D (SEPTA Metro), a trolley line in Delaware County, Pennsylvania.

Other uses

• D-line, Port Harcourt, a neighborhood in Port Harcourt, Nigeria
• D-line (IRC), a command in IRCd
• D-line, a spectral line of the Fraunhofer lines

See also

• D Train (disambiguation)