The Harrison Bay State Park is a state park and recreation area in Harrison, Tennessee. It is features 1200 acres of area and 40 miles of Chickamauga Lake shoreline.

Created in the 1930s, the Harrison Bay State Park was originally a demonstration park built by the Tennessee Valley Authority (TVA). It was named after the large bay located at the main channel of the Tennessee River, which now covers the old town of Harrison and the last Cherokee Campground. The site is also quite historic for being the location of the three villages (Cherokee Campground), where one of the last great Cherokee Chieftains, Chief Joe Vann, ruled over.

Visitors of the Harrison Bay State Park can now enjoy biking, fishing, golfing, hiking, boating, camping, picnicking, and swimming at the site.