Seawall Campground is a campground in Acadia National Park on Mount Desert Island off the coast of Maine. The campground offers four loops of campsites, including "drive-up" sites suitable for RVs and trailers, as well as walk-in tent-only campsites, and is open from late May into October. Much of the campground was built between 1936 and 1942 by crews of the Civilian Conservation Corps; this section is listed on the National Register of Historic Places. The campground is located in the village of Seawall, in the town of Southwest Harbor on Maine State Route 102A.