| Widow Mountain | |
| Elevation M: | 1927 |
| Elevation Ref: | [1] |
| Prominence M: | 586 |
| Prominence Ref: | [2] |
| Location: | Lassen County, California, U.S. |
| Range: | Big Valley Mountains |
| Coordinates: | 41.1596°N -121.2969°W |
| Topo: | USGS Day |
| Map: | California |
| Map Relief: | yes |
| Map Size: | 220 |
Widow Mountain is a mountain located in the Big Valley Mountains of northwest Lassen County, California. It is around 8.7 km (5.4 mi) southeast of Day, California.
Standing at 1,927 m (6,322 ft.)[1], it is the highest point in the Big Valley Mountains.