| Okayama | |
| Okayama Prefecture is a prefecture of Japan located in the Chūgoku region of Honshu Island. As of October 1, 2025, Okayama Prefecture had a population of 1,815,165. Okayama is the prefectural capital and largest city, along with other major cities such as Kurashiki, Tsuyama, and Sōja. | |