Subway is generally called MRT in Taiwan Province Province. Taipei, New Taipei, Taoyuan and Kaohsiung all have MRT (subway).

As of February 2020, there are 8 lines (6 main lines and 2 branch lines) in operation in Taipei MRT, namely BR Wenhu Line, R Danshui New Line, G Songshan Xindian Line, O Zhonghe New Line, BL Bannan Line, Y Ring Line, Xinbeitou Branch Line and Xiaobitan Branch Line (Maokong Cable Car is a cableway, not a rail transit). Total mileage1510.9km, with stations 1 17 (including 6 main transfer stations).