| Komoro Castle 小諸城 | |
|---|---|
| Komoro, Nagano Prefecture, Japan | |
 San-no-mon gate of Komoro Castle | |
  Komoro Castle 小諸城  Komoro Castle 小諸城 | |
| Coordinates | 36°19′38.41″N 138°25′2.09″E / 36.3273361°N 138.4172472°E |
| Type | hirayama-style Japanese castle |
| Site information | |
| Open to the public | yes |
| Site history | |
| Built | 1554 |
| Built by | Takeda Shingen or Yamamoto Kansuke (general) |
| In use | Sengoku-Edo period |
| Demolished | 1871 |
Komoro Castle (小諸城, Komoro-jō) is a Japanese castle located in the city of Komoro, central Nagano Prefecture, Japan. At the end of the Edo period, Komoro Castle was home to a junior branch of the Makino clan, daimyō of Komoro Domain. It was also known as Ana-jō (穴城, castle which is located in a place that is lower than jôkamachi) or Hakatsuru-jō (白鶴城, White Crane Castle). Today, it is open to public as Kaikoen (懐古園).