| Ulen | |
| Caption Map: | Interactive map of the lake |
| Coordinates: | 64.159°N 13.8539°W |
| Location: | Lierne Municipality, Trøndelag |
| Basin Countries: | Norway |
| Area: | 6.23km2 |
| Reference: | NVE[1] |
Ulen[2] is a lake in Lierne Municipality in Trøndelag county, Norway. The 6.23km2 lake lies south of the village of Mebygda. Water flows south from the lake Lenglingen into Ulen, and it then continues south into the lake Rengen (which goes into Sweden).[3]