Jackson Demonstration State Forest is a public forest in Mendocino County, California managed by the California Department of Forestry and Fire Protection.

The forest land is located along California State Highway 20 between Willits and the coastal city of Fort Bragg.

It is named after Jacob Green Jackson,[1] founder of Caspar Lumber Company, which formerly owned the land.

[2] The forest holds sacred value as an ancestral home and ceremonial site for the Coyote Valley Band of Pomo Indians.

[5] Coast redwood is the most common type of tree in the forest, but there is also Douglas fir, grand fir, hemlock, bishop pine, tanoak, alder, madrone and bay myrtle.