Bank of Yokohama Head Office Building, Modern skyscraper and bank headquarters in Minatomirai, Japan.

The Bank of Yokohama Head Office Building is a steel and glass skyscraper in the Minatomirai business district of Yokohama, Japan. It rises 28 floors above ground with 2 basement levels, standing among the other office towers that define this waterfront area.

Built on land used as a car park during the 1989 Yokohama Exposition, the tower took two years and seven months to complete and opened in July 1993. On 6 September 1993 the head office division and headquarters moved here from the old head office above Bashamichi Station, about 500 m away. At 28 floors it is the tallest bank head office building in Japan.

The building's name comes from its owner and main tenant, Bank of Yokohama, which moved its head office and head-office sales division here from the old building near Bashamichi Station on 6 September 1993. On the low-rise block's first floor is Hamagin Hall Viamare, a multipurpose hall with 517 seats.

The tower stands between Minatomirai-dori and the Shuto Expressway Yokohane Line, with the Nisseki Yokohama Building immediately to the south. A pedestrian deck links it toward Sakuragicho Station, Landmark Tower and Pia Arena MM, passing the expressway office building's second-floor deck. The 517-seat Hamagin Hall Viamare occupies the low-rise block's first floor.

The building stands directly next to the Nisseki Yokohama Building, placing two major institutional headquarters side by side on the same street. This makes the spot one of the few in Minatomirai where two towers of comparable function sit that close together.