X-Tower Osaka Bay, Skyscraper in Osaka Bay, Japan

X-Tower Osaka Bay is a 200.375 m residential skyscraper in Benten 1-chome, Minato-ku, Osaka, completed in August 2006 with 54 floors above ground and two below. Its 456 apartments sit in a reinforced-concrete frame, and the complex has two buildings: the condominium tower and a low-rise Life Support Zone with shops, clinics and housing for the elderly. Common areas were designed by Agnès B.

Construction began in October 2003, sales opened in 2004 and the tower was completed in August 2006. At completion it was Japan's tallest residential skyscraper and the first such building to exceed 200 metres; later towers such as The Kitahama in Kitahama took that title. It was built by a joint venture of Orix Real Estate, Mitsui Fudosan and Hankyu Realty, designed by Showa Sekkei and built by Kajima.

The lower floors form a "Life Support Zone" with shops, clinics and housing for the elderly, while the 456 apartments sit above. The shared areas were designed by the French fashion house agnès b., a detail residents pass through daily.

The tower is directly connected to Bentenchō Station on the Osaka Metro Chūō Line and the Osaka Loop Line, in Minato-ku, Osaka. The lower Life Support Zone holds shops, clinics and housing for the elderly; the upper floors are private apartments and not open to visitors.

At completion in 2006 it was Japan's tallest residential tower and the first apartment building in the country to pass 200 m, at 200.375 m. It lost that title when The Kitahama in Osaka was finished. The neighbouring OSAKA BAY TOWER, formerly ORC 200, takes its old name from the same 200 m height.