Goeree-Overflakkee (Dutch pronunciation: [ɣuˈreː ˈoːvərflɑˌkeː]) is the southernmost delta island of the province of South Holland, Netherlands. It is separated from Voorne-Putten and Hoeksche Waard by the Haringvliet, from the mainland of North Brabant by the Volkerak, and from Schouwen-Duiveland by Lake Grevelingen.Since 2013, Goeree-Overflakke has also been a municipality, consisting from west to east of the former municipalities of Goedereede, Dirksland, Middelharnis, and Oostflakkee.