Sunset Bay State Park is a state park in the U.S. state of Oregon, administered by the Oregon Parks and Recreation Department. It is located about 0.4 miles (0.64 km) south of Cape Arago Lighthouse, and 2.5 miles (4.0 km) outside the town of Charleston on Coos Bay. The park offers a crescent shaped beach, tide pools, hiking trails and a year-round campground.