| Mount Thayer | |
| Elevation Ft: | 3479 |
| Location: | Santa Clara County, California, U.S. |
| Range: | Santa Cruz Mountains |
| Map: | California |
| Map Size: | 200 |
| Coordinates: | 37.1639°N -121.9187°W |
| Topo: | USGS Los Gatos |
Mount Thayer is a mountain in the Santa Cruz mountain range located in Santa Clara County, California. The summit is in a section of the abandoned Almaden Air Force Station, about 1 mile west of Mount Umunhum. The elevation of the summit is at 3479feet feet. An old derelict building, surrounded by telephone poles, is located on the summit. Mount Thayer, along with the surrounding property, is off limits to the public.[1]