The Liyutan Dam (traditional Chinese: 鯉魚潭壩; simplified Chinese: 鲤鱼潭坝; pinyin: Lǐyútán Bà) is a dam in Sanyi Township, Miaoli County, Taiwan.

The dam was initially constructed in July 1985 and was opened in November 1992.

Its water surface spans over an area of 4.32 km2 with a maximum depth of 300 m. The dam forms the Liyutan Reservoir and discharges its water to Da'an River.

[1] The dam supplies water to the public in Taichung City and Miaoli County, as well as 4,209 hectares of irrigation area.

[1][2] The dam is accessible east from Tai'an Station of Taiwan Railways.