| Breiddalsvatnet | |
| Pushpin Map: | Innlandet#Norway |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location of the lake |
| Coordinates: | 61.7053°N 7.9265°W |
| Location: | Skjåk Municipality, Innlandet |
| Inflow: | Støre Lægervatnet lake |
| Outflow: | Grøtlivatnet lake |
| Basin Countries: | Norway |
| Area: | 6.899km2 |
| Reference: | NVE[1] |
Breiddalsvatnet is a lake in Skjåk Municipality in Innlandet county, Norway. The 6.9km2 lake lies just west of the village of Grotli. The Norwegian National Road 15 runs along the north side of the lake. The mountains Helleggi and Krosshø are located just north of the lake and the Breheimen National Park lies just south of the lake.