| Sumpfsee | |
| Location: | Rostock, Mecklenburg-Vorpommern |
| Pushpin Map: | Mecklenburg-Vorpommern |
| Coords: | 53.7736°N 12.1444°W |
| Outflow: | Nebel |
| Basin Countries: | Germany |
| Area: | 1.27km2 |
| Elevation: | 6m (20feet) |
| Cities: | Güstrow |
Sumpfsee is a lake in the Rostock district in Mecklenburg-Vorpommern, Germany. At an elevation of 6 m, its surface area is 1.27 km2.