Landschaftsschutzgebiet Diedersdorfer Heide und Großbeerener Graben, Protected landscape area in Teltow-Fläming District, Germany.

The Diedersdorfer Heide and Großbeerener Graben protected area is a nature conservation zone in Teltow-Fläming that covers several communities such as Osdorf, Mahlow, and Blankenfelde. The landscape is characterized by meadows, farmland, and a ditch system, with walking trails including the Berliner Mauerweg and Teltower Dörferweg running through the northern section.

The landscape protection area was established on 27 February 1998 by the Brandenburg state government, with smaller boundary changes in 2002 and 2005. In the 19th century the ditches drained water that the sewage farms could not absorb into the Nuthe, and in the 1960s the Großbeerener Graben was subject to land improvement. The four-lane Landesstraße 76, opened in 2010, cuts the area in two.

The area is named after the Diedersdorf heath and the Großbeeren ditch, which drained water that the sewage farms could not absorb into the Nuthe in the 19th century. A loop trail runs from Genshagen to Schloss Diedersdorf through the southern section, and the five-kilometre Natura Trail Genshagener Busch crosses the southeastern part.

The Berliner Mauerweg and Teltower Dörferweg offer good paths for walking and cycling through the area and can be accessed from several starting points. Visitors should wear sturdy footwear, as trail conditions vary depending on the season and weather.

The Genshagener Busch holds a Flora-Fauna-Habitat and Natura 2000 area of just under three square kilometres. A five-kilometre circular trail, the Natura Trail Genshagener Busch, runs through this southeastern part of the protected area.