Iiyama Domain
| Iiyama Domain 飯山藩 | |
|---|---|
| under Tokugawa shogunate Japan | |
| 1603–1871 | |
| Capital | Iiyama Castle |
| Area | |
| • Coordinates | 36°51′23″N 138°21′58.5″E / 36.85639°N 138.366250°E |
| • Type | Daimyō |
| Historical era | Edo period |
• Established | 1603 |
• Disestablished | 1871 |
| Today part of | part of Nagano Prefecture |
Iiyama Domain (飯山藩, Iiyama-han) was a feudal domain under the Tokugawa shogunate of Edo period Japan. It was located in northern Shinano Province, Honshū. The domain was centered at Iiyama Castle, located in what is now part of the city of Iiyama in Nagano Prefecture.