| Image Coa: | Wappen Heemsen.png |
| Coordinates: | 52.7167°N 25°W |
| Image Plan: | Heemsen in NI.svg |
| State: | Niedersachsen |
| District: | Nienburg/Weser |
| Samtgemeinde: | Heemsen |
| Elevation: | 23 |
| Area: | 39.37 |
| Postal Code: | 31622 |
| Area Code: | 05024 |
| Licence: | NI |
| Gemeindeschlüssel: | 03 2 56 012 |
| Divisions: | 4 |
| Mayor: | Heinrich Heidorn |
| Party: | CDU |
Heemsen is a municipality in the district of Nienburg, in Lower Saxony, Germany. It is situated approximately 8 km northeast of Nienburg, and 25 km south of Verden.[1] [2] The joint municipality of Heemsen encompasses an area of approximately 74,000 square meters.
Heemsen is part of the Samtgemeinde ("collective municipality") Heemsen.