| Samegao Castle | |
|---|---|
鮫ヶ尾城 | |
| Myōkō, Niigata Prefecture, Japan | |
 Samegao Castle ruins | |
  Samegao Castle  Samegao Castle | |
| Coordinates | 37°3′4″N 138°13′48″E / 37.05111°N 138.23000°E |
| Type | yamashiro-style Japanese castle |
| Site information | |
| Open to the public | yes (hiking trails) |
| Condition | ruins |
| Site history | |
| Built | c.1570s |
| Built by | Uesugi Kenshin |
| In use | Sengoku period |
| Demolished | unknown |
Samegao Castle (鮫ヶ尾城, Samegao-jō) was a Sengoku period yamashiro-style Japanese castle located in what is now the Yukimori and Miyauchi neighborhoods of the city of Myōkō, Niigata Prefecture in the Hokuriku region of Honshu, Japan. The ruins have been protected as a National Historic Site since 2008.[1]