Boulder Creek Wilderness, Protected wilderness area in Umpqua National Forest, Oregon, United States.

Boulder Creek Wilderness is a 19,100-acre area in Umpqua National Forest, designated by Congress in 1984. It surrounds Boulder Creek, which drains into the North Umpqua River, and ranges from 1,600 to 5,600 feet in elevation. Its Umpqua Rocks Special Interest Geologic Area covers 1,420 acres of volcanic basalt and andesite spires such as Eagle Rock, Rattlesnake Rock and Old Man.

The area was protected in 1984 to preserve the forest landscape for the future. A major fire in 1996 altered large portions of the forest, but the landscape continues to regenerate through natural processes.

The area draws visitors who seek solitude in forest settings where the sound of flowing water and wildlife are the main companions. People who visit tend to follow established routes carefully, respecting the forest's natural recovery from past disturbances.

Trails include the 10.6-mile Boulder Creek Trail and the 3.5-mile Jessie Wright segment of the North Umpqua Trail, with over 30 miles of paths in all. The terrain climbs from 1,600 to 5,600 feet, so expect long gradients and sections of loose volcanic rock. The 1996 Spring Fire left standing dead trees and regrowth along parts of the route.

The 1996 Spring Fire burned through 16,500 acres of the wilderness, and scientists have since studied the long-term ecological effects of the blaze on the forest.