| Iimoriyama Castle | |
| Nativename-A: | Japanese: 飯盛山城 |
| Location: | Shijōnawate, Osaka, Osaka Prefecture, Japan |
| Type: | mountaintop-style castle |
| Ownership: | Miyoshi clan |
| Condition: | ruins |
| Built: | 1333-38 |
| Builder: | Kizawa Nagamasa |
| Materials: | Stone walls |
| Demolished: | 1576 |
| Battles: | Battle of Iimoriyama Castle(1532) |
| Past Commanders: | Kizawa Nagamasa, Miyoshi Nagayoshi |
| Coordinates: | 34.7264°N 135.6537°W |
| Map Type: | Japan Osaka Prefecture#Japan |
| Map Relief: | 1 |
was a Sengoku period mountain-top castle in Osaka Prefecture, Japan. Located on a 315.9 meter mountain. It was the original base of power for the Miyoshi clan.[1] [2] thumb|View from Honkuruwa base
Iimoriyama Castle was built by Kizawa Nagamasa and was later controlled by the Miyoshi clan.[3] [4]
Miyoshi Nagayoshi relocated his home castle from Akutagawayama Castle to Iimoriyama Castle in 1560.[1]
In 1564, Miyoshi Nagayoshi died in the castle.[5]
The castle was listed as one of the Continued Top 100 Japanese Castles in 2017.[6]
The castle is now only ruins, with some stone walls, moats and Dobashi bridges.[1]