Wiesenburg (official name: Wiesenburg/Mark) is a town in the Potsdam-Mittelmark district, in Brandenburg, Germany. It is situated 11 km west of Belzig, and 46 km southwest of Brandenburg. It is located in the High Fläming Nature Park.
These villages became districts (Ortsteile) of Wiesenburg/Mark:
Barbara Klembt (Left Party) is mayor of Wiesenburg/Mark. In 2001 she was elected for an eight-year-term by the municipal council.
The municipal council has 26 members. The Left Party and the Christian Democrats (CDU) have 5 seats each, the Social Democrats (SPD) and the Farmers Association have 4 seats each. The remaining seats went to small local groups.