Cousins Island Chapel is an historic non-denominational chapel on Cousins Road on Cousins Island, an island Casco Bay off the coast of Yarmouth, Maine. Built in 1894 by local year-round residents, it is the most architecturally notable building on the island, and is representative of a late 19th-century trend of building summer chapels in coastal Maine. It was listed on the National Register of Historic Places in 1997.