| Byavatnet | |
| Pushpin Map: | Trøndelag#Norway |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location of the lake |
| Coordinates: | 63.6639°N 11.0202°W |
| Location: | Levanger, Trøndelag |
| Basin Countries: | Norway |
| Area: | 2.31km2 |
| Reference: | NVE |
Byavatnet is a lake in the municipality of Levanger in Trøndelag county, Norway. It is located about south of the village of Ekne and about west of the village of Ronglan. The lake Hammervatnet lies about south of Byavatnet and the lake Sønningen lies about to the northwest.[1] The 2.31km2 lake is about long and about 800m (2,600feet) wide.