Line 1 or 1 line may refer to:
Public transport Africa Line 1 (Algiers Metro), Algeria Cairo Metro Line 1, Egypt
Asia 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 Metro) Line 1 (Taiyuan Metro) 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 Blue Line (Chennai Metro) Red Line (Delhi Metro) Red Line (Lucknow Metro) Blue Line (Mumbai Metro) Orange Line (Nagpur Metro) Line 1 (Navi Mumbai Metro) Purple Line (Pune Metro) Blue Line (Kolkata Metro), the first metro line of Kolkata and of India
Japan Astram Line, Hiroshima Higashiyama Line, Nagoya Midōsuji Line, Osaka Airport Line (Fukuoka) 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 Line 1 (Almaty Metro), Kazakhstan Line 1 (Doha Metro) or Red Line, Qatar Line 1 (Riyadh Metro), Saudi Arabia Line 1 (Yerevan Metro), Armenia Line 01 (Phnom Penh Bus Rapid Transit), Cambodia LRT Line 1 (Metro Manila), Philippines MRT Line 1 (Dhaka Metro Rail), Bangladesh MRT Line 1 (Jakarta Mass Rapid Transit), or North–South Line, Indonesia Tehran Metro Line 1, Iran Batu Caves–Pulau Sebang Line, formerly Seremban Line, Malaysia Kajang Line, or MRT Line 1, Malaysia Wenhu Line, Taipei, Taiwan
Australia L1 Dulwich Hill Line, Sydney, New South Wales T1 North Shore & Western Line, Sydney Trains service, New South Wales
Europe France Île-de-France tramway Line 1, Paris Paris Metro 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 Line 1 (Minsk Metro) or Maskoŭskaja line, Belarus U1 (Vienna U-Bahn), Austria M1 (Copenhagen Metro), Denmark M1 (Warsaw), Poland Metro Line M1 (Budapest Metro), Hungary Brussels Metro line 1, Belgium Bucharest Metro Line M1, Romania
North America Canada Line 1 (O-Train) or Confederation Line, Ottawa, Ontario Line 1 Yonge–University, Toronto, Ontario Green Line (Montreal Metro), officially Line 1, Quebec
Mexico Line 1 of the Guadalajara urban rail system Metrorrey Line 1, Monterrey Mexico City Metro Line 1 Mexico City Metrobús Line 1
United States 1 (New York City Subway service), New York 1 Line (Sound Transit), Seattle Route 1 (MTA Maryland) Tempo (bus rapid transit), Line 1T, Oakland, California
Other places in North America Line 1 (Havana Suburban Railway), Cuba Line 1 (Santo Domingo Metro), Dominican Republic Line 1 (Panama Metro)
South America Brazil Line 1 (Baixada Santista LRT), São Paulo Line 1 (Rio de Janeiro) Line 1 (Rio LRT) Line 1 (São Paulo Metro)
Other Line 1 (Lima Metro), Peru Line 1 (Metrovía), Guayaquil, Ecuador Santiago Metro Line 1, Chile
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
See also
1 Train (disambiguation) First Line (disambiguation) One Line (disambiguation) I Train (disambiguation) L Line (disambiguation) List of public transport routes numbered 1