History
Hommachi Station opened on 20 May 1933 with the initial section of the Osaka Municipal Subway's Midōsuji Line between a temporary Umeda and Shinsaibashi. The station was suspended in mid-1945 when its concourse was requisitioned for military storage. Line 4 (now the Chūō Line) reached a temporary Hommachi platform from Bentenchō in October 1964, and a separate Shinanobashi Station opened on the Yotsubashi Line in October 1965. In July 1969 the permanent Chūō Line platform was completed and the Shinanobashi platform was renamed Hommachi, consolidating the three platforms into a single transfer hub. A connecting track between the Chūō and Yotsubashi lines was completed in 2015. The station passed to Osaka Metro on 1 April 2018.
History summarized from Japanese & English Wikipedia · last reviewed 2026-06-09.
Where the English and Japanese sources differ, this account follows the Japanese source.
Notes
The Yotsubashi Line platform was originally a separate station called Shinanobashi until it was renamed and merged into Hommachi in July 1969.