| Tangahnsee | |
| Location: | Mecklenburgische Seenplatte, Mecklenburg-Vorpommern |
| Pushpin Map: | Mecklenburg-Vorpommern |
| Coords: | 53.3961°N 12.475°W |
| Basin Countries: | Germany |
| Area: | 0.258km2 |
| Elevation: | 73m (240feet) |
Tangahnsee is a lake in the Mecklenburgische Seenplatte district in Mecklenburg-Vorpommern, Germany. At an elevation of 73 m, its surface area is 0.258 km².