| Official Name: | Mountain Home |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | USA |
| Pushpin Map Caption: | Location in the United States |
| Timezone: | PST |
| Utc Offset: | -8 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | -7 |
| Coordinates: | 37.1211°N -121.7958°W |
| Elevation M: | 283 |
| Elevation Ft: | 928 |
| Unit Pref: | US |
| Area Total Sq Mi: | 6.0 |
| Area Land Sq Mi: | 5.9 |
| Area Water Sq Mi: | 0.1 |
| Population Density Km2: | auto |
| Population Density Sq Mi: | auto |
| Postal Code Type: | ZIP code |
| Postal Code: | 95033, 95037 |
| Area Code: | 408, 669 |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1670815 |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | California |
| Subdivision Type2: | County |
| Subdivision Name2: | Santa Clara |
Mountain Home, also known as Casa Loma (Spanish for "Mountain Home"), is a sparsely populated area located on the eastern side of the Santa Cruz Mountains in unincorporated southwest Santa Clara County, California near Mount Chual and Rancho Canada del Oro Open Space Preserves. The Loma Fire burned about one half of the region in 2016.
The area is situated within the upper Llagas Creek watershed, bounded by Mount Chual and Rancho Canada del Oro Open Space Preserves toward the north, Loma Prieta Road on the west, Loma Chiquita Road on the south, and Twin Creeks Road on the east. The region includes small communities along Casa Loma Road, Mt Chual Spur Road, and Twin Falls Road.
The area is mostly mountain ridges with steep, sloping terrain and narrow canyons. The Berrocal Fault runs diagonally through the center of the area.
Native vegetation ranges from a mixed conifer-oak woodland along the mountain ridges, to chaparral and coastal scrub along the slopes, to riparian flora along the canyon floors.
According to the Köppen climate classification system, Mountain Home has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.
In 2016, the Loma Fire burned through approximately half the region, with multiple homes damaged or destroyed.