| Grüner See | |
| Location: | Wiehengebirge, Landkreis Osnabrück, Lower Saxony |
| Coords: | 52.2633°N 8.4544°W |
| Outflow: | Hunte |
| Pushpin Map: | Lower Saxony |
| Basin Countries: | Germany |
| Area: | ca. 0.1ha |
| Depth: | ca. 1m (03feet) |
| Max-Depth: | ca. 2m (07feet) |
| Volume: | 1000m2 |
| Shore: | 110m (360feet) |
| Elevation: | ca. 145m (476feet) |
Grüner See is a lake in the Wiehen Hills of the Osnabrück Landkreis in Lower Saxony, Germany. At an elevation of ca. 145m (476feet), its surface area is ca. 0.1ha. It is around 25km north of Bielefeld.