Chiya Dam (Japanese: 千屋ダム) is a dam constructed near the origin of the class A Takahasi river, located in Niimi, Okayama Prefecture, Japan.

However, due to a change of plans, the dam ended up being built significantly further downstream.

The dam's control center can be found on its left bank, with the first floor of the building serving as a reference library.

The Chiya Power Station leverages the water flow from the dam to generate electricity.

The power station is run under the authority of the Okayama Prefecture.