Line 1

Line 1 or 1 line may refer to:

Africa

 * Line 1 (Algiers Metro), Algeria
 * Cairo Metro Line 1, Egypt

China

 * Line 1 (Beijing Subway)
 * Line 1 (Changchun Rail Transit)
 * Line 1 (Changsha Metro)
 * Line 1 (Changzhou Metro)
 * Line 1 (Chengdu Metro)
 * Line 1 (Chengdu Tram) (planned)
 * Line 1 (Chongqing Rail Transit)
 * Line 1 (Dalian Metro)
 * Line 1 (Dongguan Rail Transit)
 * Line 1 (Foshan Metro) or Guangfo Metro
 * Line 1 (Fuzhou Metro)
 * Line 1 (Guangzhou Huangpu Tram)
 * Line 1 (Guangzhou Metro)
 * Line 1 (Guilin Rail Transit) (under construction)
 * Line 1 (Guiyang Metro)
 * Line 1 (Hangzhou Metro)
 * Line 1 (Harbin Metro)
 * Line 1 (Hefei Metro)
 * Line 1 (Hohhot Metro)
 * Line 1 (Jinan Metro)
 * Line 1 (Kunming Metro)
 * Line 1 (Lanzhou Metro)
 * Line 1 (Luoyang Subway)
 * Line 1 (Nanchang Metro)
 * Line 1 (Nanhai Tram)
 * Line 1 (Nanjing Metro)
 * Line 1 (Nanning Metro)
 * Line 1 (Nantong Metro)
 * Line 1 (Ningbo Rail Transit)
 * Line 1 (Qingdao Metro)
 * Line 1 (Shanghai Metro)
 * Line 1 (Shaoxing Metro)
 * Line 1 (Shenyang Metro)
 * Line 1 (Shenzhen Metro)
 * Line 1 (Shijiazhuang Metro)
 * Line 1 (Suzhou Rail Transit)
 * Line 1 (Taiyuan Metro) (under construction)
 * Line 1 (Tianjin Metro)
 * Line 1 (Ürümqi Metro)
 * Line 1 (Wuhan Metro)
 * Line 1 (Wuhu Rail Transit)
 * Line 1 (Wuxi Metro)
 * Line 1 (Xi'an Metro)
 * Line 1 (Xiamen Metro)
 * Line 1 (Xuzhou Metro)
 * Line 1 (Zhengzhou Metro)

India

 * Line 1 (Chennai Metro) or Blue Line
 * Line 1 (Delhi Metro) or Red Line
 * Line 1 (Lucknow Metro) or Red Line
 * Line 1 (Mumbai Metro)
 * Line 1 (Mumbai Monorail)
 * Line 1 (Nagpur Metro) or Orange Line
 * Line 1 (Navi Mumbai Metro)
 * Line 1 (Pune Metro) or Purple Line
 * Kolkata Metro Line 1

Japan

 * Line 1 (Hiroshima Rapid Transit) or Astram Line
 * Line 1 (Nagoya Municipal Subway) or Higashiyama Line
 * Line 1 (Osaka Metro) or Midōsuji Line
 * Kūkō Line (Fukuoka City Subway)
 * Toei Asakusa Line, Tokyo

South Korea

 * Busan Metro Line 1
 * Daegu Metro Line 1
 * Daejeon Metro Line 1
 * Gwangju Metro Line 1
 * Incheon Subway Line 1
 * Seoul Subway Line 1

Other places in Asia

 * Line 1 (Yerevan Metro), Armenia
 * Line 01 (Phnom Penh Bus Rapid Transit), Cambodia
 * Tehran Metro Line 1, Iran
 * Line 1 (Almaty Metro), Kazakhstan
 * Seremban Line, Malaysia
 * LRT Line 1 (Metro Manila), Philippines
 * Line 1 (Doha Metro) or Red Line, Qatar
 * Line 1 (Singapore), a service of the East West MRT Line
 * Wenhu Line, Taipei, Taiwan

Australia

 * L1 Dulwich Hill Line, Sydney, New South Wales
 * T1 North Shore & Western Line, Sydney Trains service, New South Wales

France

 * Île-de-France tramway Line 1, Paris
 * Paris Métro Line 1

Germany

 * U1 (Berlin U-Bahn)
 * U1 (Frankfurt U-Bahn)
 * U1 (Hamburg U-Bahn)
 * U1 (Munich U-Bahn)
 * U1 (Nuremberg U-Bahn)

Greece

 * Line 1 (Athens Metro)
 * Line 1 (Thessaloniki Metro)

Italy

 * Line 1 (Naples Metro)
 * Milan Metro Line 1

Russia

 * Line 1 (Moscow Metro) or Sokolnicheskaya line
 * Line 1 (Nizhny Novgorod Metro)
 * Line 1 (Saint Petersburg Metro)

Spain

 * Line 1 (Bilbao metro)
 * Line 1 (Granada Metro)
 * Line 1 (Madrid Metro)
 * Line 1 (Madrid Light Metro)
 * Line 1 (Metrovalencia)
 * Barcelona Metro line 1
 * Seville Metro line 1

Ukraine

 * Line 1 (Kharkiv Metro), Ukraine
 * Line 1 (Kyiv Metro) or Sviatoshynsko–Brovarska line

Other places in Europe

 * U1 (Vienna U-Bahn), Austria
 * Line 1 (Minsk Metro) or Maskoŭskaja line, Belarus
 * Brussels Metro line 1, Belgium
 * M1 (Copenhagen Metro), Denmark
 * Metro Line M1 (Budapest Metro), Hungary
 * M1 (Warsaw), Poland
 * Bucharest Metro Line M1, Romania

Canada

 * Line 1 (O-Train) or Confederation Line, Ottawa, Ontario
 * Line 1 Yonge–University, Toronto, Ontario
 * Green Line (Montreal Metro), formerly Line 1, Quebec

Mexico

 * Metrorrey Line 1, Monterrey
 * Mexico City Metro Line 1
 * Mexico City Metrobús Line 1
 * Line 1 of the Guadalajara urban rail system

United States

 * Tempo (bus rapid transit), Line 1T, Oakland, California
 * Route 1 (MTA Maryland)
 * 1 (New York City Subway service), New York
 * 1 Line (Sound Transit), Seattle, Washington

Other places in North America

 * Line 1 (Havana Suburban Railway), Cuba
 * Line 1 (Santo Domingo Metro), Dominican Republic
 * Line 1 (Panama Metro)

Brazil

 * Line 1 (Baixada Santista LRT), São Paulo
 * Line 1 (Rio de Janeiro)
 * Line 1 (Rio LRT)
 * Line 1 (São Paulo Metro)

Other places in South America

 * Santiago Metro Line 1, Chile
 * Line 1 (Metrovía), Guayaquil, Ecuador
 * Line 1 (Lima Metro), Peru

Other uses

 * A "one-line whip", an application of a Whip in politics
 * LINE1 (a.k.a. L1), a non-LTR retrotransposon and the only Long INterspersed Element (LINE) active in the human genome