The Illinois River Forks State Park is a state park and recreation area in Cave Junction, Oregon. It is a beautiful day-use park accessible through Highway 199.

The Illinois River Forks State Park?s main draw is its location. Aside from being accessible from a highway, it is also perched at the confluence of the west and east forks of the Illinois River. This gives the site excellent scenery, making it ideal for picnicking and some outdoor recreation. There is a walking trail that visitors can use to get to know the area more and the rare plants that are found there. There are also some raft trips offered to the public, providing access to the wild and scenic Illinois River. Fishing, swimming, and bird watching are also frequently enjoyed at the park.