The John B. Dewitt Redwoods State Natural Reserve is a state park and nature reserve in Humboldt County, California. It is often described as one of the more obscure redwoods park in the area, mostly since there is not a lot of information about the site online.

Created in 2001, the John B. Dewitt Redwoods State Natural Reserve is also one of the newest state reserves in California. It is named after the Save-the-Redwoods League pioneer, John B. Dewitt. Dewitt, along with the league, took great strides in redwood park preservation, making it just fit to honor him by naming a park of the sort after him.

The John B. Dewitt Redwoods State Natural Reserve is still being developed. It is, however, already open to the public and picnicking and hiking are some of the most popular activities in the site.