Many bus, rail, subway, and tram lines around the world are either officially or colloquially named the Green Line. These include:
- Line 8 (Beijing Subway), Beijing, China
- Line 4 (Guangzhou Metro), Guangzhou, China
- Kwun Tong Line, Hong Kong, China
- Line 2 (Shanghai Metro), Shanghai, China (light green)
- Line 12 (Shanghai Metro), Shanghai, China (dark green)
- Green Line, a planned transit route of the Bareilly Metro, Bareilly, India
- Green Line (Namma Metro), Bangalore, India
- Green Line (Chennai Metro), Chennai, India
- Green Line (Delhi Metro), Delhi, India
- Green Line, a rapid transit line of the Hyderabad Metro, Hyderabad, India
- Green Line (Tel Aviv Light Rail), Tel Aviv, Israel
- Chūō Line (Osaka), Japan
- Tokyo Metro Chiyoda Line, a line in Tokyo, Japan
- Green Line, the commuter service of the Tōkyū Tōyoko Line, Yokohama, Japan
- Yokohama Municipal Subway Green Line, a subway line in Yokohama, Japan
- Green Line Express, a passenger train operated by Pakistan Railways between Karachi and Islamabad
- Green Line - Karachi Metrobus, a bus rapid transit line under construction in Karachi, Pakistan
- Manila Light Rail Transit System Line 1, Manila, Philippines
- Dzerzhinskaya Line, Novosibirsk, Russia
- East West MRT Line, Singapore
- Seoul Subway Line 2, South Korea
- "Green Line", an elevated railway of the Taichung Metro, Taichung, Taiwan
- Green Line (Taipei Metro), Taipei, Taiwan
- Green Mountain line, a light rail line under construction in New Taipei, Taiwan
- Silom Line, Bangkok, Thailand
- Sukhumvit Line, Bangkok, Thailand
- Green Line (Dubai Metro), United Arab Emirates
- Line A (Prague Metro), Prague, Czech Republic
- M1 (Copenhagen), Copenhagen, Denmark
- Lyon Metro Line D, Lyon, France
- RER D, Paris, France
- Line 4 (Budapest Metro), Budapest, Hungary
- Green Line (Luas), one of the two tram lines in Dublin, Ireland
- Line M2 - Milan Subway (Metropolitana di Milano), Milan, Italy
- Line C of the Lisbon Metro, Lisbon, Portugal
- Line C of the Porto Metro, Porto, Portugal
- Green Line, a route of the TOMA (Caldas da Rainha), Caldas da Rainha, Portugal
- Bucharest Metro Line M4, Bucharest, Romania
- Zamoskvoretskaya Line, Moscow, Russia
- Nevsko-Vasileostrovskaya Line, Saint Petersburg, Russia
- Barcelona Metro line 3, Barcelona, Spain
- Line 5 (Madrid Metro), Madrid, Spain
- Green Line (Stockholm Metro), Sweden
- Alekseevskaya Line, Kharkov, Ukraine
- Syretsko-Pecherska Line, Kiev, Ukraine
- Green Line Coaches, a commuter coach network in London, United Kingdom
- District line, London, UK
- Green Line, one of the two lines in the Tyne and Wear Metro, Northeast England, UK
- Green Line Coach Station, a bus station in London, United Kingdom
- Green Line (Los Angeles Metro), a light rail line in the Los Angeles Metro system
- Green Line (Sacramento RT), a light rail line in Sacramento, California
- Green Line, a San Bernardino Express bus rapid transit line in San Bernardino
- Green Line (San Diego Trolley), a light rail line in San Diego, California
- Warm Springs/South Fremont–Daly City line, a BART rapid transit line San Francisco
- Green Line (Washington Metro), Washington, DC
- D Line (RTD), Denver, Colorado
- Green Line, a bus route of the First Coast Flyer, Jacksonville, Florida
- Green Line (Miami Metrorail), Miami, Florida
- Green Line (MARTA) (formerly the Proctor Creek Line), Atlanta, Georgia
- Green Line (CTA), Chicago, Illinois
- Green Line (Baltimore), a proposed transit line in Baltimore, Maryland
- Green Line (MBTA), a light rail system in Boston, Massachusetts
- Green Line (Minnesota), a light rail line in Minneapolis-St. Paul, Minnesota
- Rapid Ride Route 777 "Green Line", a bus rapid transit service in Albuquerque, New Mexico
- IRT Lexington Avenue Line in New York City, colored green, serving 4, 5, 6, and <6> trains
- IND Crosstown Line, in New York City, colored lime green, serving G train
- Green Line, a bus route of the WEGO Niagara Falls Visitor Transportation system, Niagara, New York
- Blue, Green, and Waterfront Lines (Cleveland), Cleveland, Ohio
- Green Line, a route of the Emerald Express, Eugene, Oregon
- MAX Green Line, Oregon
- Green Line of the SEPTA Subway–Surface Trolley Lines, Philadelphia, Pennsylvania
- Greenline (Pennsylvania), a proposed transit line in southeastern Pennsylvania
- Green Line, a proposed expansion of Capital MetroRail, Austin, Texas
- Green Line (Dallas Area Rapid Transit), a light rail line in Dallas, Texas
- Green Line, former name of the Trinity Railway Express, Dallas, Texas
- Green Line (TRAX), Salt Lake City, Utah
- Green Line (Sound Transit), Seattle, Washington
- Swift Green Line, a planned bus rapid transit line in Snohomish County, Washington
((SIA))
[[Category:Transport]]