Elbtalaue is a Samtgemeinde ("collective municipality") in the district of Lüchow-Dannenberg, in Lower Saxony, Germany. Its seat is in the town Dannenberg. Actually, the word "Elbtalaue" means Elbe valley and describes a spatially not sharply defined region around the river's middle reaches in northern Germany.

The Samtgemeinde Elbtalaue consists of the following municipalities:

1. Damnatz
2. Dannenberg
3. Göhrde
4. Gusborn
5. Hitzacker
6. Jameln
7. Karwitz
8. Langendorf
9. Neu Darchau
10. Zernien

53°06′N 11°06′E / 53.100°N 11.100°E / 53.100; 11.100