御堂筋線
The is an underground rapid transit line in Osaka, Japan, operated by Osaka Metro. The line connects Umeda, Hommachi, Yotsubashi, Namba, Daikokuchō and Suminoe, and runs parallel to the Midōsuji Line from Daikokuchō to Nishi-Umeda. Its official name is , while the Osaka Municipal Transportation Bureau refers to it as , and in Ministry of Land, Infrastructure and Transport publications, it is written as . Station numbers are indicated by the letter Y.