| Ulen | |
| Pushpin Map: | Trøndelag#Norway |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location of the lake |
| Coordinates: | 64.159°N 13.8539°W |
| Location: | Lierne, Trøndelag |
| Basin Countries: | Norway |
| Area: | 6.23km2 |
| Reference: | NVE |
Ulen is a lake in the municipality of Lierne 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).[1]