| Straumsetervatnet Selavatnet | |
| Pushpin Map: | Trøndelag#Norway |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location of the lake |
| Coordinates: | 63.9814°N 10.8804°W |
| Location: | Trøndelag, Norway |
| Inflow: | Gurbelva river |
| Outflow: | Tverråa river |
| Catchment: | Follaelva |
| Basin Countries: | Norway |
| Area: | 4.72km2 |
| Reference: | NVE |
Straumsetervatnet or Selavatnet is a lake on the border of the municipalities of Åfjord and Steinkjer in Trøndelag county, Norway. The majority of the 4.72km2 lake lies in Steinkjer, with the northwestern end of the lake partially lying in Åfjord. The village of Sela (and Sela Church) lies on the northern side of the lake and the village of Sandsetra at the southeastern end of the lake. The lake is one of the sources for the Folla river system which flows into the Trondheimsfjord at the village of Follafoss.[1]