The "Green Line", the urban growth boundary for Virginia Beach, Virginia

The Gothic Line, a German defensive line in Italy during World War II, renamed the "Green Line" in June 1944

Green Line (MBTA), a light rail network in the Boston area (which includes the nation's oldest subway tunnel)

The Green Line, one of the two lines in the Tyne and Wear Metro, North East England

Green Line (Cleveland), a light rail line

The Green Line, a light rail line in the San Diego Trolley system

New York Railways, a former street railway, also known as "Green Lines"

Green Line (Luas), one of the two tram lines in Dublin, Ireland

IRT Lexington Avenue Line in New York City

Green Line (Chicago Transit Authority), a rapid transit line

Green Line (Israel), the 1949 Armistice lines established between Israel and its neighbours: Syria, Jordan, and Egypt

Stockholm Metro, Stockholm Metro

Bloor-Danforth (TTC) line, a rapid transit line of the Toronto Subway

Green Line (Washington Metro), a rapid transit line

LACMTA Green Line, a light rail line in the Los Angeles Metro Rail system

SEPTA Subway-Surface Trolley Lines, a light rail network in the Philadelphia area

Green Line (Seattle), the planned first line in a now-defunct plan to build a monorail system

Green Line, the disputed border between India and Pakistan in the Sir Creek

Kwun Tong Line of Hong Kong MTR, Hong Kong, PR China

East West MRT Line, a rapid transit line in Singapore

Miami Metrorail, a rapid transit line (United States)

Evergreen Line, a proposed line in Vancouver, British Columbia

RER D, Paris, France

District Line, on the Underground in London, England

Tokyo Metro Chiyoda Line, a line in Tokyo, Japan

MAX Green Line light rail route currently under construction in Portland, Oregon

Syretsko-Pecherska Line, Kiev, Ukraine

Viva Green, a rapid bus transit line in and around Toronto

Seoul Subway Line 2 (South Korea)

Green Line (Dallas Area Rapid Transit), a future light rail line

Shanghai Metro Line 2 (PR China)

Barcelona metro line 3, Barcelona, Spain

Line M2 - Milan Subway (Metropolitana di Milano), a rapid transit line in Milan, Italy

Chūō Line (Osaka), Japan

Line 1 Green (Montreal Metro), a rapid transit line in Montreal

Green Line (Baltimore), a proposed transit line

Fremont - Daly City Line, a rapid transit line in the San Francisco Bay Area's BART system

D Line (RTD), Denver, Colorado

Line 5 (Madrid Metro) in Madrid, Spain

Green Line (Cyprus), a cease fire line between the Republic of Cyprus and the de facto Turkish Republic of Northern Cyprus

Line A (Prague Metro)

Nevsko-Vasileostrovskaya Line in the Saint Petersburg Metro (Russia)

Dzerzhinskaya Line, Novosibursk, Russia

Green Bus Lines, a private New York City bus company now part of the public MTA Bus Company

Alekseevskaya Line, Kharkov, Ukraine

M1 (Copenhagen), Denmark

Lyon Metro Line D in Lyon, France

Green Line (Yokohama), a subway line to open in Yokohama, Japan in March 2008

Green Line, Taipei Rapid Transit System, Taipei, Taiwan

Green Line Coaches, a commuter coach company, part of the Arriva group, operating services from London, England

Green Line (magazine), a UK magazine

Green Line (Lebanon), a line of demarcation in Lebanon between Christian and Muslim militias during the Lebanese Civil War