Schloss Arendsee, Castle heritage monument in Nordwestuckermark, Germany.

Schloss Arendsee is a red-brick manor house built from 1839 to 1843 to a design by Friedrich August Stüler for Count Albert von Schlippenbach. It stands on a hill near a small lake, about 18 km from Prenzlau, and has a flat, inward-sloping roof rather than the intended pitched roof. A park on the west side, named after Peter Joseph Lenné, who helped design it, surrounds the building.

Schloss Arendsee was built between 1839 and 1843 to a design by Friedrich August Stüler for Count Albert von Schlippenbach. The estate remained the Schlippenbach family's country seat until 1945, when they fled and the property was expropriated. After housing homeless people, it served as a school until 2004. Since 2007, restoration has been carried out by changing owners.

Schloss Arendsee is privately owned and rented out for company parties, retreats, weddings and film productions. The building was used as a school during the GDR period, and teaching continued until 2004. After the war it first housed homeless people.

The estate covers a large area with walking paths and open spaces to explore, best visited in good weather. Visitors should allow time to see both the building itself and the surrounding grounds with the lake and trees at a comfortable pace.

The 30-metre tower was demolished shortly after the Second World War, and its stones were reused as building material for single-family houses in Arendsee. The tower has not been rebuilt since; the present building is privately owned and let for weddings, retreats and film productions.