The Nausdorf Canal (German: Nausdorfer Kanal) is a canal in the municipalities of Lenzen and Karstädt in the northwest of Brandenburg, Germany. It links two lakes — the Rambower See, in Karstädt, and the Rudower See, in Lenzen — and runs through the Rambower Moor. It takes its name from the village of Nausdorf, part of Lenzen, located midway along the canal.

Already in the 15th century, there was a mill stream that powered a mill in Nausdorf that existed until 1833. The canal was built between 1862 and 1879, and expanded in 1924/1925 to its present dimensions.

The canal is about 5 kilometres (3.1 mi) long and was designed with a width of 8–10 metres (26–33 ft); today at points it is a maximum of 3 metres (9.8 ft) wide. Its depth is about 1 metre (3 ft 3 in); its bed is covered with a thick layer of mud. The watercourse is not navigable. It is popular with anglers due to its large stock of whitefish.