| Lac de Pétichet | |
| Location: | Isère |
| Coords: | 44.9897°N 5.7792°W |
| Pushpin Map: | France |
| Basin Countries: | France |
| Area: | 80ha |
| Max-Depth: | 17m (56feet) |
| Elevation: | 930m (3,050feet) |
Lac de Pétichet is a lake at Saint-Théoffrey in the Isère department of France, 400 m south of the Grand lac de Laffrey.