Mizuho Bank Uchisaiwaichō Head Office Building
| Mizuho Bank Uchisaiwaichō Head Office Building | |
|---|---|
|
| |
| General information | |
| Type | Office |
| Location | Chiyoda, Tokyo, Japan |
| Coordinates | 35°40′14″N 139°45′26″E / 35.67056°N 139.75722°ECoordinates: 35°40′14″N 139°45′26″E / 35.67056°N 139.75722°E |
| Construction started | 1977 |
| Completed | 1980 |
| Height | |
| Antenna spire | 142.5 metres (468 ft) |
| Roof | 132.0 metres (433 ft) |
| Top floor | 32 |
| Technical details | |
| Floor count | 36 (32 above ground, 4 underground) |
| Floor area | 135,014 m2 (1,453,280 sq ft) |
| Design and construction | |
| Architect | Yoshinobu Ashihara |
| Main contractor |
Shimizu Corporation Kajima Construction Ando Corporation Sato Kogyo Co.,Ltd. Nissan Construction |

The Mizuho Bank Uchisaiwaichō Head Office Building (みずほ銀行内幸町本部ビル Mizuho Ginkō Uchisaiwaichō Honbu Biru) is a 143 m (469 ft) tall skyscraper in Tokyo, Japan. At 38 stories the building is the 86th tallest building in Tokyo. It contains 1.4 million sq ft (134,974 m²) of office space, 100% of which is now occupied by Mizuho Bank, the consumer banking arm of the second-largest Japanese financial conglomerate Mizuho Financial Group, while still called the DKB Head Office from time to time.
The building was built in Chiyoda at 1 Uchisaiwaichō in 1981, when it was called the Dai-Ichi Kangyo Bank Head Office Building. It was designed by architects Yoshinobu Ashihara & Partners and developed by Shimizu Corporation, one of the “big five” real estate developers in Japan. Dai-Ichi Kangyo Bank (“DKB”) combined with Fuji Bank and the Industrial Bank of Japan in 2000 to form Mizuho Financial Group.