| Kanayama Castle | |
|---|---|
金山城 | |
| Ōta, Gunma, Japan | |
 Kanayama Castle ruins | |
  Kanayama Castle  Kanayama Castle | |
| Coordinates | 36°19′4.08″N 139°22′38.91″E / 36.3178000°N 139.3774750°E |
| Type | hilltop-style Japanese castle |
| Site information | |
| Open to the public | yes |
| Condition | ruins |
| Site history | |
| Built | 1469 |
| Built by | Iwamatsu clan |
| In use | Sengoku period |
| Demolished | 1591 |
Kanayama Castle (金山城, Kanayama-jō) was a Sengoku period yamashiro-style castle located on top of Mount Kanayama in what is now the city Ōta, Gunma Prefecture, Japan. The site has been protected as a National Historic Site since 1990.[1] The castle was also known as Ōta Kanayama Castle or as Nitta Kanayama Castle.