Tsuyama is a city in Okayama Prefecture, Japan. As of 1 February 2023, the city had an estimated population of 97,507 in 45653 households and a population density of 190 persons per km2. The total area of the city is 506.33 square kilometres (195.50 sq mi).

Okayama Prefecture is a prefecture of Japan located in the Chūgoku region of Honshu. Okayama Prefecture has a population of 1,906,464 and has a geographic area of 7,114 km2. Okayama Prefecture borders Tottori Prefecture to the north, Hyōgo Prefecture to the east, and Hiroshima Prefecture to the west.