Red Line or Redline may refer to:
Arts and entertainment Films Red Line (1959 film), a Finnish film based on the 1909 novel The Red Line (1982 film), an Iranian film directed by Masoud Kimiai Red Line (1996 film), an American crime drama film Redline (1997 film) or Deathline, a Canadian-Dutch science fiction film The Thin Red Line (1998 film), an American war film Redline (2007 film), an American action film Redline (2009 film), a Japanese anime film Red Line (2012 film), an American terrorist thriller film Red Line, a 2023 Taiwanese action romantic film starring Ella Chen and Alan Ko
Music The Red Line, a 1978 opera by Aulis Sallinen based on the 1909 novel 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..." Redline (EP), by Seventh Day Slumber, 2015
Video games Redline (1999 video game), a first-person shooter/car combat game for Windows Street Legal Racing: Redline, a 2003 Windows game Redline (2006 video game), a racing game for Mac OS X
Other media The Red Line, a 1909 Finnish novel by Ilmari Kianto on which a film and opera are based The Red Line (TV series), a 2019 American drama series
Brands and enterprises Redline (bicycle brand), an American bicycle manufacturer Redline Coaches, a Tasmanian bus company Redline Communications, a Canadian company Redline Records, an Australian record label Redline yachts, a series produced by C&C Yachts
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 KRL Commuterline, Jakarta, Indonesia North–South Line of Jakarta MRT, 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 Windrush line, service operated by London Overground, 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)
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
Oceania Central Coast & Newcastle Line, New South Wales, Australia Northern Line (Sydney), Australia
South America Line 3 (São Paulo Metro), São Paulo, Brazil Red Line (Rio de Janeiro), Brazil, an expressway
Other uses Document redlining, the process of comparing two documents 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 Redlining, a discriminatory practice in the United States Redline Energy Drink, from Bang Energy Redline (engines)