Line 2 or 2 Line may refer to:
Public transport Americas 2 (New York City Subway service), a rapid transit service in the A Division of the New York City Subway 2 Line (Sound Transit), a light rail line in Seattle, Washington Line 2 Bloor–Danforth, a subway line in Toronto Line 2 (Rio de Janeiro), a metro line in Brazil Line 2 (Rio LRT), one of the lines of VLT Carioca Line 2 (São Paulo Metro), one of the metro lines making up the São Paulo Metro Line 2 of the Guadalajara urban rail system, Mexico Mexico City Metro Line 2, a rapid transit line in Mexico City Mexico City Metrobús Line 2, a bus rapid transit line in Mexico City Line 2 (O-Train), a diesel light rail line in Ottawa Orange Line (Montreal Metro), also known as Line 2 2 (Los Angeles Railway), former streetcar service
Asia Green Line (Kolkata Metro), a metro line in India Yellow Line (Mumbai Metro), a metro line in India Aqua Line (Pune Metro), a planned line in India Line 2 (Riyadh Metro), in Saudi Arabia MRT Line 2 (Dhaka Metro Rail), a proposed line in Bangladesh MRT Line 2 (Jakarta Mass Rapid Transit), a planned line in Indonesia Manila Light Rail Transit System Line 2, a line in Metro Manila, Philippines Tanjung Malim–Port Klang Line, formerly Port Klang Line, Malaysia Putrajaya Line, or MRT Line 2, Malaysia Busan Metro Line 2, in South Korea Daegu Metro Line 2, in South Korea Incheon Subway Line 2, in South Korea Seoul Subway Line 2, a circular line in Seoul, South Korea Tamsui-Xinyi line, in Taipei metropolitan area, Taiwan
China Line 2 (Beijing Subway), a subway line in Beijing Line 2 (Changchun Rail Transit), a subway line in Changchun, Jilin Line 2 (Changsha Metro), a metro line in Changsha, Hunan Line 2 (Changzhou Metro), a metro line in Changzhou, Jiangsu Line 2 (Chengdu Metro), a metro line in Chengdu, Sichuan Line 2 (Chengdu Tram), a tram line in Chengdu, Sichuan Line 2 (Chongqing Rail Transit), a monorail line in Chongqing Line 2 (Dalian Metro), a metro line in Dalian, Liaoning Line 2 (Dongguan Rail Transit), a metro line in Dongguan, Guangdong Line 2 (Foshan Metro), a metro line in Foshan, Guangdong Line 2 (Fuzhou Metro), a metro line in Fuzhou, Fujian Line 2 (Guangzhou Metro), a metro line in Guangzhou, Guangdong Line 2 (Guangzhou Huangpu Tram), a tram line in Guangzhou, Guangdong Line 2 (Guiyang Metro), a metro line in Guiyang, Guizhou Line 2 (Hangzhou Metro), a metro line in Hangzhou, Zhejiang Line 2 (Harbin Metro), a metro line in Harbin, Heilongjiang Line 2 (Hefei Metro), a metro line in Hefei, Anhui Line 2 (Hohhot Metro), a metro line in Hohhot, Inner Mongolia Line 2 (Jinan Metro), a metro line in Jinan, Shandong Line 2 (Kunming Metro), a metro line in Kunming, Yunnan Line 2 (Lanzhou Metro), a metro line in Lanzhou, Gansu Line 2 (Luoyang Subway), a subway line in Luoyang, Henan Line 2 (Nanchang Metro), a metro line in Nanchang, Jiangxi Line 2 (Nanjing Metro), a metro line in Nanjing, Jiangsu Line 2 (Nanning Metro), a metro line in Nanning, Guangxi Line 2 (Ningbo Rail Transit), a metro line in Ningbo, Zhejiang Line 2 (Qingdao Metro), a metro line in Qingdao, Shandong Line 2 (Shanghai Metro), a metro line in Shanghai Line 2 (Shenyang Metro), a metro line in Shenyang, Liaoning Line 2 (Shenzhen Metro), a metro line in Shenzhen, Guangdong Line 2 (Shijiazhuang Metro), a metro line in Shijiazhuang, Hebei Line 2 (Suzhou Metro), a metro line in Suzhou, Jiangsu Line 2 (Taiyuan Metro), a metro line in Taiyuan, Shanxi Line 2 (Tianjin Metro), a metro line in Tianjin Line 2 (Wuhan Metro), a metro line in Wuhan, Hubei Line 2 (Wuhu Rail Transit), a monorail line in Wuhu, Anhui Line 2 (Wuxi Metro), a metro line in Wuxi, Jiangsu Line 2 (Xiamen Metro), a metro line in Xiamen, Fujian Line 2 (Xi'an Metro), a metro line in Xi'an, Shaanxi Line 2 (Xuzhou Metro), a metro line in Xuzhou, Jiangsu Line 2 (Zhengzhou Metro), a metro line in Zhengzhou, Henan Taipei Metro Line 2, Tamsui–Xinyi or Red line, a metro line in Taipei, Taiwan
Europe Île-de-France tramway Line 2, part of the modern tram network of the Île-de-France region of France Line 2 (Athens Metro), a metro line of the Athens Metro, Athens, Greece Line 2 (Budapest Metro), a subway line of the Budapest Metro, Budapest, Hungary Line 2 (Bilbao Metro), a metro line of the Bilbao Metro, Bilbao, Spain Line 2 (Metrovalencia), a partially completed metro and tram line covering the city of Valencia, Spain Line 2 (Moscow Metro) or Zamoskvoretskaya line, a metro line in Russia Line 2 (Naples), a metro line in Naples, Italy Line 2 (Nizhny Novgorod Metro), a partly opened line in Russia Paris Metro Line 2, a metro line of the Paris Metro, Paris, France Line 2 (Saint Petersburg Metro), a metro line of the Saint Petersburg Metro, Saint Petersburg, Russia Line 2 (Thessaloniki Metro), a deep-level underground rapid transit line in Greece U2 (Vienna U-Bahn), a subway line of Vienna U-Bahn, Vienna, Austria
Oceania Australia L2 Randwick Line, light rail line in Sydney, New South Wales T2 Inner West & Leppington Line, Sydney Trains service, New South Wales
Politics A "two-line whip", an application of a Whip in politics (see Chief Whip for details) "Option 2" (Linje 2) of the 1980 Swedish nuclear power referendum
See also Second line (disambiguation) 2 Train (disambiguation) List of public transport routes numbered 2