The Hayachine Dam (早池峰ダム, Hayachine damu) is a multi-purpose dam on the Hienuki River, a branch of the Kitakami River, located in the city of Hanamaki, Iwate Prefecture in the Tōhoku region of northern Japan.

It managed by Hanamaki Civil Engineering Center, Minami Kunisaki Promotion Department, and is a gravity-type concrete dam with a bank height of 73.5 meters.

The dam was intended to provide industrial and drinking water for the growing city of Hanamaki, as well as irrigation water, flood control and hydroelectric power.

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