Kukuan Dam (traditional Chinese: 谷關水庫; simplified Chinese: 谷关水库; pinyin: Gǔguān Shuǐkù) is a concrete thin arch dam on the Dajia River in Heping District, Taichung, Taiwan. The dam serves for hydroelectric power generation and flood control, and is the third in a cascade of hydroelectric dams on the Dajia River, being located below the Techi and Qingshan dams and upstream from the Tienlun Dam. The dam supplies water to a power station consisting of four 45 megawatt (MW) turbines for a total capacity of 180 MW, generating 507 million kilowatt hours per year.

The dam was built between 1957 and 1961 and stands 85.1 m (279 ft) high and 149 m (489 ft) long, holding up to 13,200,000 m (10,700 acre⋅ft) of water.

• List of power stations in Taiwan
• List of dams and reservoirs in Taiwan
• Electricity sector in Taiwan