Dukovanský mlýn, Nature reserve in Dukovany, Czech Republic

Dukovanský mlýn is a nature reserve on the right slope of the Jihlava River valley above the former mill of the same name, at 310–380 m elevation in Dukovany, Třebíč District. It protects relict grass-and-herb communities on serpentine bedrock with dealpine elements. The reserve has two parts about 130 m apart, crossed by a red-marked hiking trail; a Scots pine near the lower part's eastern tip is a memorial tree.

Dukovanský mlýn, also called Horní mlýn, was a water mill on the Jihlava River near Dukovany, recorded as house no. 85. Around 1920 the miller was Jan Fryc with his wife Anežka, and the last miller was Mr. Zlatuška. Milling stopped in the 1950s, the mill was bought out and demolished in the 1960s, and its site was flooded by the Mohelno reservoir, put into operation in 1977.

The reserve takes its name from the Dukovanský mlýn mill, also called Horní mlýn, which stood on the Jihlava below the slope; its last miller was Mr. Zlatuška and it stopped grinding in the 1950s. The mill was bought out and demolished in the 1960s, and its site was flooded by the Mohelno reservoir, put into operation in 1977. A red-marked long-distance trail runs along the river through the reserve.

The reserve is accessible via marked hiking paths that connect to nearby locations and viewpoints in the surrounding area. Walking to the site requires proper footwear due to the hilly terrain and natural paths.

The reserve grows on serpentine bedrock with high magnesium content, which makes the soil very nutrient-poor. This extreme condition allows special plant species to survive that would struggle elsewhere.