| Lac de Conflans | |
| Pushpin Map: | France Ain |
| Location: | Ain/Jura |
| Coords: | 46.2667°N 5.5056°W |
| Inflow: | Valouse |
| Outflow: | Ain |
| Basin Countries: | France |
| Length: | 950m (3,120feet) |
| Width: | 250m (820feet) |
| Area: | 20ha |
| Depth: | 3m (10feet) (estimated from text) |
| Max-Depth: | 8m (26feet) |
| Elevation: | 285m (935feet) |
Lac de Conflans is a lake at the confluence of the rivers Ain and Valouse. It lies in the communes of Thoirette, in the Jura department, and Corveissiat in the Ain department of France.