Red Line may refer to:

Arts and entertainment

Films

  • Red Line (1959 film), a Finnish film based on the 1909 novel
  • Red Line (1996 film), an American crime drama film
  • Red Line (2012 film), an American terrorist thriller film
  • Red Line, a 2023 Taiwanese action romantic film starring Ella Chen and Alan Ko
  • The Red Line, a 1982 Iranian film directed by Masoud Kimiai

Music

  • Red Line (album), by Trans Am, 2000
  • "Red Line", by 5 Seconds of Summer song from 5SOS5
  • Red Line (For TA)", a 2009 song by Ayumi Hamasaki, a B-side of "You Were..."
  • The Red Line, a 1978 opera by Aulis Sallinen based on the 1909 novel

Other media

  • The Red Line (TV series), a 2019 American drama series
  • The Red Line, a 1909 Finnish novel by Ilmari Kianto on which a film and opera are based

Public transit

Many bus, rail, subway, and tram lines around the world are either officially or colloquially named the "Red Line". These include:

Africa

  • Red line (Lagos Transit), Nigeria

Asia

  • Red Lines (Bangkok), Thailand
  • Dark Red Line (Bangkok)
  • Light Red Line (Bangkok)
  • Red Line, Chiang Mai light rail transit, Thailand
  • Red Line (Doha Metro), Qatar
  • Red Line (Dubai Metro), United Arab Emirates
  • Line 5 (Chennai Metro), India
  • Red Line (Delhi Metro), India
  • Red Line (Hyderabad Metro), India
  • Red Line (Mumbai Metro), India
  • Red Line (Lucknow Metro), India
  • Red Line (Namma Metro), Bengaluru, India
  • Bogor Line of KA Commuter line Jakarta Kota–Bogor, KRL Commuterline, Jakarta, Indonesia
  • Red line (Kaohsiung MRT), Taiwan
  • Line 1 (Beijing Subway), China
  • Line 1 (Shanghai Metro), China
  • Line 5 (Guangzhou Metro), China
  • Midōsuji Line, Osaka, Japan
  • North–South Line (Singapore), Singapore
  • Tamsui–Xinyi line, Taipei, Taiwan
  • Tokyo Metro Marunouchi Line, Tokyo, Japan
  • Tsuen Wan line, Hong Kong
  • Line 1 (Daegu Metro), South Korea
  • Shinbundang Line, Seoul, South Korea
  • Red Line (Jerusalem Light Rail), Jerusalem, Israel
  • Red Line (Tel Aviv Light Rail), Tel Aviv, Israel
  • Line 2 (Riyadh Metro), Riyadh, Saudi Arabia

Europe

  • Red Line (Luas), Dublin, Ireland, a tram line
  • Red Line (Stockholm Metro), Sweden
  • Line 2 (Athens Metro), Greece
  • Aŭtazavodskaja line, Minsk, Belarus
  • Barcelona Metro line 1, Spain
  • Central line (London Underground), England
  • Leninskaya Line, Novosibirsk, Russia
  • Line 1 (Kharkiv Metro) aka Kholodnohirsko–Zavodska line, Ukraine
  • Line 1 (Saint Petersburg Metro), Russia
  • Line 2 (Madrid Metro), Spain
  • Line C (Prague Metro), Czech Republic
  • Lyon Metro Line A, Lyon, France
  • Milan Metro Line 1, Italy
  • RER A, Paris, France
  • Sviatoshynsko–Brovarska line, Kyiv, Ukraine
  • Sokolnicheskaya line, Moscow, Russia
  • Tyne and Wear Metro of Newcastle upon Tyne, UK (former line)
  • Red Line (Lisbon Metro), Portugal
  • U2 (Berlin U-Bahn), Germany

North America

Canada

  • Red Line (Calgary), Alberta
  • Red Line (Montreal Metro) (proposed)
  • Line 1 (O-Train), a light rail line in Ottawa

Mexico

  • Red Line (Mexico City Metro)
  • Red Line (Mexico City Metrobús)
  • Line 1 of the Guadalajara urban rail system, Guadalajara

United States

  • Red Line (Baltimore), Maryland Transit Administration, Maryland (Proposed)
  • Red Line (CTA), Chicago, Illinois
  • Red Line (DART), Texas
  • Red Line (IndyGo), Indianapolis Public Transportation Corporation, Indianapolis, Indiana
  • Red Line (MARTA) (formerly North-South Line), Atlanta, Georgia
  • Red Line (MBTA), Boston, Massachusetts
  • Red Line (Pittsburgh), Port Authority, Pennsylvania
  • Red Line (RTA Rapid Transit), Greater Cleveland Regional Transit Authority, Ohio
  • Red Line (Sound Transit), Seattle, Washington
  • Red Line (St. Louis MetroLink), Bi-State Development Agency, Missouri
  • Red Line (TRAX), Utah Transit Authority, Salt Lake City area
  • Red Line (Washington Metro), WMATA, Washington, D.C.
  • Red Line (The Vine), a bus rapid transit line in Vancouver, Washington
  • Baltimore Light RailLink for Penn Station – Camden Yards Line aka Red Line, Maryland Transit Administration, Baltimore, Maryland
  • B Line (Los Angeles Metro), California, until 2020 formerly named the "Red Line"
  • Capital MetroRail, Austin, Texas
  • F Line (RTD), aka Red Line, Regional Transportation District, Denver, Colorado
  • IRT Broadway–Seventh Avenue Line in New York City, colored red, serving the 1, 2, and 3 trains
  • Lynx Red Line, North Carolina
  • MAX Red Line, Tri-Met, Portland, Oregon
  • Metro Red Line (Minnesota), METRO/Minnesota Valley Transit Authority, suburban Minneapolis, Minnesota area
  • METRORail Red Line, Houston, Texas
  • PATCO Speedline, Philadelphia, Pennsylvania
  • Rapid Ride Route 766 Red Line, ABQ RIDE, Albuquerque, New Mexico
  • Red Line (BART), Bay Area Rapid Transit, San Francisco Bay Area, California
  • Special Event Line (San Diego Trolley), SDMTS, San Diego, California
  • T Third Street, MUNI, San Francisco, California
  • Valley Metro Rail, aka METRO Light Rail Red Line, Phoenix, Arizona

South America

  • Line 3 (São Paulo Metro), São Paulo, Brazil
  • Red Line (Rio de Janeiro), Brazil, an expressway

Other uses

  • Red line (phrase), a figurative phrase used in English and Hebrew meaning a limit past which something shouldn't cross safely
  • Red lines in the Russo-Ukrainian War
  • Red line (hockey), the center of the playing surface on an ice hockey rink
  • Red Line (Namibia), a pest-exclusion fence separating Northern Namibia from the central and southern parts
  • Red Line, the military line of defense in Operation Manta, along the 15th and later 16th parallel north, of the Chadian-Libyan Conflict
  • All Red Line, a network of telegraph cables linking the British Empire
  • Red Line Agreement, an agreement signed by partners in the Turkish Petroleum Company in 1928
  • Red Line Synthetic Oil Corporation, an oil manufacturer for automotive and other performance applications
  • Red Line, Iowa, an unincorporated community
  • Operation Red Line, a planned Indian military operation