| Lake Forest | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | California#USA |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in California |
| Pushpin Image: | California Locator Map with US.PNG |
| Unit Pref: | US |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Placer County |
| Coordinates: | 39.1844°N -120.1147°W |
| Elevation M: | 1908 |
| Elevation Ft: | 6260 |
Lake Forest is an unincorporated community in Placer County, California. Lake Forest is located on Lake Tahoe, 6.25miles southwest of Kings Beach. It lies at an elevation of 6260 feet (1908 m).
The Lake Forest post office operated from 1947 to 1951.