Sun Pass State Forest, Protected forest in Klamath County, Oregon, US

Sun Pass State Forest covers 21,317 acres of Klamath County about 40 miles north of Klamath Falls, near the southeastern corner of Crater Lake National Park. It is the largest single block of Oregon state forestry land east of the Cascade Mountains. Sun Mountain and Sand Ridge stand in the north, a pumice plain fills the east, lava flows lie northwest, and Sun Creek has cut a small canyon through the centre.

Oregon established this state forest in 1943 through the purchase of land from timber companies, beginning its public management and protection. This acquisition marked the transition from private lumber operations to state-controlled conservation of the forest.

The forest lies near the southeastern corner of Crater Lake National Park, and its name comes from Sun Mountain and Sun Creek within its boundaries. Kimball State Park, named after district forest warden Jackson F. Kimball, was created in 1955 from 19 acres deeded from the forest.

Sun Pass lies 40 miles north of Klamath Falls, near the southeast corner of Crater Lake National Park; no paved road crosses it, so access is by forest roads. Sun Creek runs through the centre and Annie Creek along the western border, where meadows flank the water. The upper reach of Sun Creek carries a Protective Conservancy — Critical Wildlife Habitat classification, so check district rules before entering those areas.

Sun Creek's upper reach, inside the forest, carries a "Protective Conservancy — Critical Wildlife Habitat" land use classification. Its source lies in Crater Lake National Park, where it supports bull trout; once past the forest boundary the stream is tapped for agricultural irrigation. Annie Creek, which forms the western border, is classed as a large, fish-bearing stream under the Oregon Forest Practices Act.