Dahme-Spreewald III is an electoral constituency (German: Wahlkreis) represented in the Landtag of Brandenburg.

It elects one member via first-past-the-post voting.

Under the constituency numbering system, it is designated as constituency 28.

It is located in within the district of Dahme-Spreewald.

[2] The constituency includes the town of Lübben, as well as the communities Heideblick, Heidesee, and Märkische Heide, and the districts of Lieberose/Oberspreewald, Schenkenländchen, and Unterspreewald.