| Sompo Japan Head Office Building | |
| Native Name: | 損保ジャパン本社ビル |
| Native Name Lang: | ja |
| Location: | 1-26-1 Nishi-Shinjuku Shinjuku, Tokyo, Japan |
| Coordinates: | 35.6927°N 139.6961°W |
| Status: | complete |
| Start Date: | 1973 |
| Completion Date: | 1976 |
| Antenna Spire: | 200m (700feet) |
| Roof: | 193m (633feet) |
| Floor Count: | 43 above ground 6 below ground |
| Floor Area: | 166768-2NaN-2 |
| Architect: | Yoshikazu Uchida |
| Main Contractor: | Taisei Corporation Shimizu Corporation |
| Owner: | Sompo Japan |
The is the corporate headquarters for Sompo Japan Insurance. It is located in the district Nishi-Shinjuku in Shinjuku, Tokyo, Japan. At 200 metres (656 ft), the building is the 28th tallest building in Tokyo and the 33rd tallest in Japan. It was designed by Yoshikazu Uchida.
On the street level is Seiji Togo Memorial Sompo Japan Museum of Art, where one of Vincent van Gogh's "Sunflowers" series of paintings is located.
The building is similar in appearance to Chase Tower. The building made an appearance in the 1984 film The Return of Godzilla.