The Osaka Metro Tanimachi Line is a rapid transit line of Osaka Metro, running from Dainichi Station in Moriguchi to Yaominami Station in Yao through Osaka. Despite chronologically being the system's fourth line, its official name is Rapid Electric Tramway Line No. 2 (高速電気軌道第2号線), while the Osaka Municipal Transportation Bureau refers to it as Osaka City Rapid Railway Line No. 2 (大阪市高速鉄道第2号線), and in MLIT publications, it is written as Line No. 2 . On line maps, stations on the Tanimachi Line are indicated with the letter T.

Umeda Station is a major railway station in Kita-ku in the northern commercial center of Osaka, Japan. It is the busiest station in western Japan, serving 2,343,727 passengers daily in 2005.