# Red Line

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 Sunmer 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:

### Asia

* SRT Red Lines, Bangkok, Thailand
** SRT Dark Red Line
** SRT Light Red Line
* Red Line (Chiang Mai), Chiang Mai, Thailand
* Red Line (Chennai Metro), in Chennai, India
* Red Line (Delhi Metro), India
* Red Line (Doha Metro), Qatar
* Red Line (Dubai Metro), United Arab Emirates
* Red Line (Hyderabad Metro), India
* Red line (Kaohsiung MRT), Taiwan
* Red Line (Lucknow Metro), India
* Red Line (Namma Metro), Bangalore, India
* Bogor Line of KA Commuter line Jakarta Kota–Bogor, KRL Commuterline, Jakarta, Indonesia
* Line 1 (Beijing Subway), China
* Line 1 (Shanghai Metro), China
* Midōsuji Line, Osaka, Japan
* North–South MRT line, 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)
* Red Line (Ottawa), the Confederation Line of Ottawa's O-Train (Line 1)

#### 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