Amt Unterspreewald is an Amt ("collective municipality") in the district of Dahme-Spreewald, in Brandenburg, Germany. Its seat is in the town Golßen.
The Amt Unterspreewald consists of the following municipalities:
51°58′15″N 13°36′17″E / 51.970833°N 13.604722°E / 51.970833; 13.604722