| Slettningen | |
| Pushpin Map: | Innlandet#Norway |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location of the lake |
| Coordinates: | 61.2067°N 8.1147°W |
| Location: | Vang Municipality, Innlandet |
| Basin Countries: | Norway |
| Area: | 3.38km2 |
| Reference: | NVE[1] |
Slettningen is a lake in Vang Municipality in Innlandet county, Norway. The 3.38km2 lake lies in the Filefjell area, about west of the village of Tyinkrysset.