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