The Weißeritzkreis is a former district (Kreis) in the south of Saxony, Germany.

Neighboring districts were (from west clockwise) Freiberg, Meißen, the district-free city Dresden, Sächsische Schweiz, and to the south it bordered the Czech Republic.

The district is located in the Ore Mountains, the central part is the Tharandt Forest.

The highest elevation is the Kahleberg at 905 metres (2,969 ft).

During the flooding in August 2002 the Weißeritz river had to drain many times the normal amount of water, and did destroy a lot of buildings in the river valley - houses, streets and bridges.