| Mariental | |
| Image Coa: | Wappen Mariental Helmstedt.PNG |
| Coordinates: | 52.2833°N 69°W |
| Image Plan: | Mariental in HE.svg |
| State: | Niedersachsen |
| District: | Helmstedt |
| Samtgemeinde: | Grasleben |
| Elevation: | 137 |
| Area: | 6.53 |
| Postal Code: | 38368 |
| Area Code: | 05356 |
| Licence: | HE |
| Gemeindeschlüssel: | 03 1 54 015 |
| Divisions: | 2 |
| Website: | www.samtgemeinde-grasleben.de |
| Mayor: | Fred Worch |
| Party: | CDU |
Mariental is a municipality in the district of Helmstedt, in Lower Saxony, Germany. The Municipality Mariental includes the villages of Mariental-Dorf and Mariental-Horst. See also Mariental Abbey.