| Sandsjøen | |
| Caption Map: | Interactive map of the lake |
| Coordinates: | 64.4344°N 13.6831°W |
| Location: | Lierne Municipality, Trøndelag |
| Basin Countries: | Norway |
| Area: | 15.1km2 |
| Reference: | NVE[1] |
Sandsjøen[2] is a lake in Lierne Municipality in Trøndelag county, Norway. It lies about southeast of the municipal center, Sandvika. The village of Holand is located on the northern shore of Sandsjøen.[3]
The lake, near the Swedish border, is the beginning of the Sanddøla river, a main tributary of the river Namsen. The lake flows out into the lake Laksjøen to the west.[4]