| Tunnsjøflyan | |
| Caption Map: | Interactive map of the lake |
| Coordinates: | 64.6858°N 13.0971°W |
| Location: | Røyrvik Municipality and Namsskogan Municipality, Trøndelag |
| Basin Countries: | Norway |
| Area: | 7.12km2 |
| Reference: | NVE[1] |
Tunnsjøflyan[2] is a lake in Røyrvik Municipality (and a very small part of Namsskogan Municipality) in Trøndelag county, Norway. The 7.12km2 lake drains out into the large lake Tunnsjøen to the east.[3]