Cosmosquare Station (コスモスクエア駅, Kosumosukuea-eki) is a metro station on the Osaka Metro Chūō Line^[1] and Nankō Port Town Line (New Tram)^[2] in Suminoe-ku, Osaka, Japan. This station serves as the starting terminus of both lines. This station is the westernmost station of the Osaka metro system as of 2024.

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Cosmosquare Station コスモスクエア駅
Osaka Metro station
Station building with Laurel Square Osaka Bay Tower in the foreground (May 2008).
General information
Location	1-30-21 Nankōkita, Suminoe, Osaka, Osaka （大阪市住之江区南港北一丁目30-21） Japan
Operated by	Osaka Metro
Line(s)	Chūō Line Nankō Port Town Line
Platforms	2 island platforms (1 on each level)
Tracks	4 (2 on each level)
Other information
Station code	C 10   P 09
History
Opened	18 December 1997; 26 years ago (1997-12-18)
Services
Preceding station Osaka Metro Following station Terminus Chūō Line Ōsakakō  C 11  towards Nagata Nankō Port Town Line Trade Center-mae  P 10  towards Suminoekōen
Location Cosmosquare Station Location within Osaka Prefecture Show map of Osaka Prefecture Cosmosquare Station Cosmosquare Station (Japan) Show map of Japan

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Osaka Metro

• Chūō Line (Station Number: C10)
• Nankō Port Town Line (Station Number: P09)

• The station opened to rail traffic on December 18, 1997. The name "Cosmosquare" was selected in a public poll conducted in 1988 for residents of Osaka, relating to the development of "Techno Port Osaka" on the artificial islands of the Osaka Bay area.
• On July 1, 2005, Osaka Municipal Transportation Bureau took over management of the station; Osaka Metro would take over management of the station on April 1, 2018.
• A mini aquarium was installed on the subway platform at one time. Due to excessive maintenance costs and the relatively few users of the station, it was removed.
• A different train approach melody was used on the station, playing a sound similar to that of an ocean wave. On March 27, 2007, the melody was changed to the standard approach melody that is used on the metro.
• A potential extension to the artificial island of Yumeshima was first discussed in the 1990s as part of Osaka's failed bid to host the 2008 Summer Olympics. The Yumesaki Tunnel, which opened on August 1, 2009, was built with space for the Chūō Line to extend westward to Yumeshima (this segment now called the OTS North Technoport Line [ja]), which is now expected to be completed in 2024 in time for Expo 2025 to be held at said site.

• Ancient ship Namihaya outdoor exhibit
• Cosmosquare Seaside Park and Promenade
• Kongo Gakuen international school
• Laurel Square Osaka Bay Tower
• Morinomiya University of Medical Sciences
• National Institute of Technology and Evaluation
• Osaka Bay Residence
• Osaka Prefectural Police Suminoe Police Station Nanko Cosmo kōban
• Osaka Regional Immigration Bureau Cosmosquare branch
• Port of Osaka International Ferry Terminal (for ferries to Busan and Shanghai)
• River Garden Cosmo Square

• Cosmosquare Station
• Osaka Metro Cosmosquare Station

34°38′35″N 135°24′45″E