Tsuyama Castle is a Japanese castle located in the Sange neighborhood of the city of Tsuyama, Okayama Prefecture, in the San'in region of Japan. Tsuyama considered one of Japan's three major hirayama

Tsuyama Domain was a feudal domain under the Tokugawa shogunate of Edo period Japan, in what is now northern Okayama Prefecture. It controlled most of Mimasaka Province and was centered around Tsuyama