Cache Creek Wilderness, Protected wilderness area near Clear Lake, California, United States.

Cache Creek Wilderness is a protected natural area in Lake County featuring steep hillsides, open grasslands, rocky cliffs, and flowing streams. The landscape combines different terrain types where forests, meadows, and water systems come together across the preservation.

Congress added the area to the National Wilderness Preservation System in 2006 through the Northern California Coastal Wild Heritage Wilderness Act (Public Law 109-362). In July 2015 it became part of Berryessa Snow Mountain National Monument, and the Bureau of Land Management now manages it. The wilderness lies within the larger Cache Creek Natural Area of more than 70,000 acres.

The landscape bears traces of settlements that existed long before modern times in this region. Walking through the area, visitors can find archaeological sites that tell stories of the people who once lived here.

The wilderness lies in Lake County within the larger Cache Creek Natural Area, and the Bureau of Land Management administers it. Access is by foot on trails; the terrain of steep, rounded hills and stream canyons means hikers should carry water and plan for heat. More than 30 miles of Cache Creek are designated a California Wild and Scenic River.

Tule elk here form California's second-largest herd of this endemic subspecies, not a rare deer species in general. The animals share the wilderness with a year-round bald eagle population. The herd grazes the open meadows between steep, rounded hills.