| Happy Valley | |
| 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 |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Name1: | California |
| Subdivision Type2: | County |
| Subdivision Name2: | Calaveras County |
| Coordinates: | 38.3°N -120.6839°W |
| Elevation M: | 460 |
| Elevation Ft: | 1509 |
Happy Valley is an unincorporated community in Calaveras County, California. It lies at an elevation of 1509 feet (460 m).
Happy Valley was settled by immigrants from France, who engaged in placer gold mining and viticulture, establishing a stone winery. The date of the town's establishment is uncertain; it may predate the 1848 discovery of gold at Sutter's Mill.[1] At its peak there were thousands of residents of many ethnic backgrounds in the vicinity; by 1956 only two buildings remained.[2]