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| Komaru Castle 小丸城 | |
|---|---|
| Echizen, Fukui Prefecture, Japan | |
 Remains of Komaru Castle's main gate | |
  Komaru Castle 小丸城  Komaru Castle 小丸城 | |
| Coordinates | 35°53′53″N 136°13′49″E / 35.897962°N 136.230176°E |
| Type | Japanese castle |
| Site information | |
| Open to the public | yes |
| Condition | Ruins |
| Site history | |
| Built | 1575 |
| Built by | Sassa Narimasa |
| In use | Sengoku period |
| Demolished | 1581 |
Komaru Castle (小丸城, Komaru-jō) was a Japanese castle located in what is now the city of Echizen Fukui Prefecture, in the Hokuriku region of Japan. Built in the Sengoku period by Sassa Narimasa, the ruins are now a Fukui Prefectural Historic Site.