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.