Vranov Reservoir, Hydroelectric reservoir in South Moravia, Czech Republic.

Vranov Reservoir is a water body created by damming the Dyje River in South Moravia. It sits at about 380 meters elevation and serves water storage, electricity generation, and flood protection for the surrounding area.

Plans for a dam on the Dyje date to the Austro-Hungarian era, when engineer Ferdinand Schmidt promoted the project; a water concession was granted in 1912. The consortium Pittel & Brausewetter, Lanna and Českomoravská stavební společnost began work in March 1930, and the reservoir filled in autumn 1933. The first turbine fed the grid on 11 April 1934.

Passenger boat service began on 11 July 1934, was halted in 1992 and resumed in 2006; the fleet includes the Valentýna, built in 1961 at the Navika shipyard in Štěchovice and rebuilt in 2006, and the Viktorie, launched in 2007. Boats run from the dam to Bítov and Chmelinice.

The shoreline has several entry points where you can rent boats, swim, or camp. A visitor center near Vranov nad Dyjí provides information and helps you plan your time here.

The dam has proven valuable during flood events, significantly reducing water flow into downstream areas. This protection is especially important for communities that depend on its control.